def test_ExtFuncShared(self):
"""
Test compiling a model with external functions in a shared library. Real, Integer, and Boolean arrays.
"""
fmu_name = compile_fmu(self.cpath, self.fpath, compiler_options={'variability_propagation':True})
model = load_fmu(fmu_name)
s_ceval = model.get('s')
res = model.simulate()
s_sim1 = res.final('s')
fmu_name = compile_fmu(self.cpath, self.fpath, compiler_options={'variability_propagation':False})
model = load_fmu(fmu_name)
res = model.simulate()
s_sim2 = res.final('s')
nose.tools.assert_equals(s_sim1, s_sim2)
def run_demo(with_plots=True):
"""
This example shows how to simulate a system that contains switches. The
example model is simple in the sense that no reinitialization of the
variables is needed at the event points.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
class_name = 'IfExpExamples.IfExpExample2'
mofile = curr_dir+'/files/IfExpExamples.mo'
fmu_name = compile_fmu(class_name, mofile)
# Load the dynamic library and XML data
model = load_fmu(fmu_name)
# Simulate
res = model.simulate(final_time=5.0)
# Get results
x = res['x']
u = res['u']
t = res['time']
assert N.abs(res.final('x') - 3.5297217) < 1e-3
assert N.abs(res.final('u') - (-0.2836621)) < 1e-3
if with_plots:
fig = p.figure()
p.plot(t, x, t, u)
p.legend(('x','u'))
p.show()
def run_demo(with_plots=True):
"""
Distillation2 model
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
fmu_name = compile_fmu("JMExamples.Distillation.Distillation2",
curr_dir+"/files/JMExamples.mo")
dist2 = load_fmu(fmu_name)
res = dist2.simulate(final_time=7200)
# Extract variable profiles
x16 = res['x[16]']
x32 = res['x[32]']
t = res['time']
print "t = ", repr(N.array(t))
print "x16 = ", repr(N.array(x16))
print "x32 = ", repr(N.array(x32))
if with_plots:
# Plot
plt.figure(1)
plt.plot(t,x16,t,x32)
plt.grid()
plt.ylabel('x')
plt.xlabel('time')
plt.show()
def run_demo(with_plots=True):
"""
An example on how to simulate a model using the DAE simulator. The result
can be compared with that of sim_rlc.py which has solved the same problem
using dymola. Also writes information to a file.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
class_name = 'RLC_Circuit'
mofile = curr_dir+'/files/RLC_Circuit.mo'
fmu_name = compile_fmu(class_name, mofile)
rlc = load_fmu(fmu_name)
res = rlc.simulate(final_time=30)
sine_y = res['sine.y']
resistor_v = res['resistor.v']
inductor1_i = res['inductor1.i']
t = res['time']
assert N.abs(res.final('resistor.v') - 0.159255008028) < 1e-3
if with_plots:
fig = p.figure()
p.plot(t, sine_y, t, resistor_v, t, inductor1_i)
p.legend(('sine.y','resistor.v','inductor1.i'))
p.show()
def simulate(self):
''' TODO: LOG all command omc '''
# tic= timeit.default_timer()
# Simulation process with JModelica
fullMoFile= self.moPath+ '/'+ self.moFile
fullMoLib= self.libPath+ '/'+ self.libFile
'''build the fmu block from the modelica model '''
# fmu_name= compile_fmu(self.moModel, absolutePath,
# compiler_options = {'extra_lib_dirs':self.libPath})
fmu_name= compile_fmu(self.moModel, [fullMoFile, fullMoLib])
''' Load the model '''
model_fmu= load_fmu(fmu_name)
''' Load the list of options for the JModelica compiler '''
opts = model_fmu.simulate_options()
opts['solver']= self.config.getSolver()
opts['ncp']= self.config.getNcp()
# for key,value in simOpt.getOptions().items():
# print key,value
# opts[key] = value
print opts
result = model_fmu.simulate(start_time= self.config.getStartTime(),
final_time= self.config.getStopTime(),
options=opts)
# toc= timeit.default_timer()
# print 'Simulation time ', toc- tic
return result
def run_demo(with_plots=True):
curr_dir = os.path.dirname(os.path.abspath(__file__));
class_name = 'ExtFunctions.transposeSquareMatrix'
mofile = os.path.join(curr_dir, 'files', 'ExtFunctions.mo')
# Compile and load model
fmu_name = compile_fmu(class_name, mofile)
model = load_fmu(fmu_name)
# Simulate
res = model.simulate()
# Get result data
b1_1 = res['b_out[1,1]']
b1_2 = res['b_out[1,2]']
b2_1 = res['b_out[2,1]']
b2_2 = res['b_out[2,2]']
t = res['time']
assert N.abs(res.final('b_out[1,1]') - 1) < 1e-6
assert N.abs(res.final('b_out[1,2]') - 3) < 1e-6
assert N.abs(res.final('b_out[2,1]') - 2) < 1e-6
assert N.abs(res.final('b_out[2,2]') - 4) < 1e-6
if with_plots:
fig = p.figure()
p.clf()
p.plot(t, b1_1, label='b1_1')
p.plot(t, b1_2, label='b1_2')
p.plot(t, b2_1, label='b2_1')
p.plot(t, b2_2, label='b2_2')
p.legend()
p.grid()
p.show()
def test_ExtFuncStatic(self):
"""
Test compiling a model with external functions in a static library.
"""
cpath = "ExtFunctionTests.ExtFunctionTest1"
fmu_name = compile_fmu(cpath, TestExternalStatic.fpath)
model = load_fmu(fmu_name)
def run_demo(with_plots=True):
"""
An example on how to simulate a model using the ODE simulator.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
file_name = os.path.join(curr_dir,'files','VDP.mop')
fmu_name = compile_fmu("JMExamples.VDP.VDP",
curr_dir+"/files/JMExamples.mo")
model = load_fmu(fmu_name)
opts = model.simulate_options()
opts["CVode_options"]["rtol"] = 1e-6
res = model.simulate(final_time=10, options=opts)
assert N.abs(res.final('x1') - 7.34186386e-01) < 1e-3
assert N.abs(res.final('x2') + 1.58202722) < 1e-3
x1 = res['x1']
x2 = res['x2']
if with_plots:
plt.figure()
plt.plot(x2, x1)
plt.legend(('x1(x2)'))
plt.show()
def run_demo(with_plots=True, version="2.0"):
# Compile model
fmu_name = compile_fmu("IBPSA.Fluid.FixedResistances.Examples.PlugFlowPipe","C:\My_Libs\modelica-ibpsa\IBPSA")
fmu_name=("IBPSA_Fluid_FixedResistances_Examples_PlugFlowPipe.fmu")
#print("FMU compiled",fmu_name)
print(fmu_name)
# Load model
pipe = load_fmu(fmu_name)
print("FMU loaded", pipe)
res = pipe.simulate(final_time=100)
x1 = res['Tin.offset']
x2 = res['sou.m_flow']
t = res['time']
plt.figure(1)
plt.plot(t, x1, t, x2)
plt.legend(('Tin (K)','mdot (kg/s)'))
plt.title('Pipe')
plt.ylabel('y axis')
plt.xlabel('Time (s)')
plt.show()
def run_demo(with_plots=True):
"""
Demonstrates how to use an JMODELICA generated FMU for sensitivity
calculations.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
fmu_name = compile_fmu("Robertson", curr_dir+"/files/Robertson.mo")
model = load_fmu(fmu_name)
# Get and set the options
opts = model.simulate_options()
opts['sensitivities'] = ["p1","p2","p3"]
opts['ncp'] = 400
#Simulate
res = model.simulate(final_time=4, options=opts)
dy1dp1 = res['dy1/dp1']
dy2dp1 = res['dy2/dp1']
time = res['time']
nose.tools.assert_almost_equal(dy1dp1[40], -0.35590, 3)
nose.tools.assert_almost_equal(dy2dp1[40], 3.9026e-04, 6)
if with_plots:
plt.plot(time, dy1dp1, time, dy2dp1)
plt.legend(('dy1/dp1', 'dy2/dp1'))
plt.show()
def run_demo(with_plots=True):
curr_dir = os.path.dirname(os.path.abspath(__file__));
class_name = 'ExtFunctions.addTwo'
mofile = os.path.join(curr_dir, 'files', 'ExtFunctions.mo')
# Compile and load model
fmu_name = compile_fmu(class_name, mofile)
model = load_fmu(fmu_name)
# Simulate
res = model.simulate()
# Load result data
sim_a = res['a']
sim_b = res['b']
sim_c = res['c']
t = res['time']
assert N.abs(res.final('a') - 1) < 1e-6
assert N.abs(res.final('b') - 2) < 1e-6
assert N.abs(res.final('c') - 3) < 1e-6
if with_plots:
fig = p.figure()
p.clf()
p.subplot(3,1,1)
p.plot(t, sim_a)
p.subplot(3,1,2)
p.plot(t, sim_b)
p.subplot(3,1,3)
p.plot(t, sim_c)
p.show()
def run_demo(with_plots=True):
"""
An example on how to simulate a model using a DAE simulator with Assimulo.
The model used is made by Maja Djačić.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
m_name = 'SolAngles'
mofile = curr_dir+'/files/SolAngles.mo'
fmu_name = compile_fmu(m_name, mofile)
model = load_fmu(fmu_name)
res = model.simulate(final_time=86400.0, options={'ncp':86400})
theta = res['theta']
azim = res['azim']
N_day = res['N_day']
time = res['time']
assert N.abs(res.final('theta') - 90.28737353) < 1e-3
# Plot results
if with_plots:
p.figure(1)
p.plot(time, theta)
p.xlabel('time [s]')
p.ylabel('theta [deg]')
p.title('Angle of Incidence on Surface')
p.grid()
p.show()
def run_demo(with_plots=True):
"""
Simulation of a model that predicts the blood glucose levels of a type-I
diabetic. The objective is to predict the relationship between insulin
injection and blood glucose levels.
Reference:
S. M. Lynch and B. W. Bequette, Estimation based Model Predictive Control of Blood Glucose in
Type I Diabetes: A Simulation Study, Proc. 27th IEEE Northeast Bioengineering Conference, IEEE, 2001.
S. M. Lynch and B. W. Bequette, Model Predictive Control of Blood Glucose in type I Diabetics
using Subcutaneous Glucose Measurements, Proc. ACC, Anchorage, AK, 2002.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__))
fmu_name1 = compile_fmu("JMExamples.BloodGlucose.BloodGlucose1", os.path.join(curr_dir, "files", "JMExamples.mo"))
bg = load_fmu(fmu_name1)
opts = bg.simulate_options()
opts["CVode_options"]["rtol"] = 1e-6
res = bg.simulate(final_time=400, options=opts)
# Extract variable profiles
G = res["G"]
X = res["X"]
I = res["I"]
t = res["time"]
assert N.abs(res.final("G") - 19.77650) < 1e-4
assert N.abs(res.final("X") - 14.97815) < 1e-4
assert N.abs(res.final("I") - 2.7) < 1e-4
if with_plots:
plt.figure(1)
plt.subplot(2, 2, 1)
plt.plot(t, G)
plt.title("Plasma Glucose Conc")
plt.grid(True)
plt.ylabel("Plasma Glucose Conc. (mmol/L)")
plt.xlabel("time")
plt.subplot(2, 2, 2)
plt.plot(t, X)
plt.title("Plasma Insulin Conc.")
plt.grid(True)
plt.ylabel("Plasma Insulin Conc. (mu/L)")
plt.xlabel("time")
plt.subplot(2, 2, 3)
plt.plot(t, I)
plt.title("Plasma Insulin Conc.")
plt.grid(True)
plt.ylabel("Plasma Insulin Conc. (mu/L)")
plt.xlabel("time")
plt.show()
def run_demo(with_plots=True):
"""
Example demonstrating how to use index reduction.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
# Compile model
fmu_name = compile_fmu("Pendulum_pack.PlanarPendulum",
curr_dir+"/files/Pendulum_pack.mop",compiler='optimica')
# Load model
model = load_fmu(fmu_name)
# Options
opts = model.simulate_options()
opts["CVode_options"]["rtol"] = 1e-6
# Load result file
res = model.simulate(final_time=10., options=opts)
x = res['x']
st = res['st']
ct = res['ct']
err = res['err']
y = res['y']
vx = res['vx']
vy = res['vy']
t = res['time']
maxerr = N.max(err)
if maxerr > 1e-6:
print "Maximum error: ", maxerr
assert maxerr < 1e-4
assert N.abs(res.final('x') - 0.38735171) < 1e-3
assert N.abs(res.final('st') - 0.38733358) < 1e-3
assert N.abs(res.final('ct') + 0.92193964) < 1e-3
assert N.abs(res.final('err') - 1.96716163e-05) < 1e-3
assert N.abs(res.final('y') + 0.92193202) < 1e-3
assert N.abs(res.final('vx') - 6.04839823e-01) < 1e-3
assert N.abs(res.final('vy') - 2.54124747e-01) < 1e-3
if with_plots:
plt.figure(1)
plt.subplot(3,1,1)
plt.plot(t,x,t,y)
plt.grid(True)
plt.legend(['x','y'])
plt.subplot(3,1,2)
plt.plot(t,vx,t,vy)
plt.grid(True)
plt.legend(['vx','vy'])
plt.subplot(3,1,3)
plt.plot(t,err)
plt.grid(True)
plt.legend(['err'])
plt.xlabel('time [s]')
plt.show()
def test_ModelicaUtilities(self):
"""
Test compiling a model with external functions using the functions in ModelicaUtilities.
"""
fpath = path(get_files_path(), 'Modelica', "ExtFunctionTests.mo")
cpath = "ExtFunctionTests.ExtFunctionTest3"
jmu_name = compile_fmu(cpath, fpath)
model = load_fmu(jmu_name)
def test_ExtFuncSharedCeval(self):
"""
Test compiling a model with external functions in a shared library. Constant evaluation during compilation.
"""
cpath = "ExtFunctionTests.ExtFunctionTest1"
fmu_name = compile_fmu(cpath, TestExternalShared.fpath, compiler_options={'variability_propagation':True})
model = load_fmu(fmu_name)
nose.tools.assert_equals(model.get('c'), 3)
def run_demo(with_plots=True,with_blocking_factors = False):
"""
FMU simulation of a distillation column. The distillation column model is
documented in the paper:
@Article{hahn+02,
title={An improved method for nonlinear model reduction using balancing of
empirical gramians},
author={Hahn, J. and Edgar, T.F.},
journal={Computers and Chemical Engineering},
volume={26},
number={10},
pages={1379-1397},
year={2002}
}
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
# Compile the stationary initialization model into a JMU
fmu_name = compile_fmu('DISTLib.Examples.Simulation',
os.path.join(curr_dir, 'files', 'DISTLib.mo'))
# Load a model instance into Python
model = load_fmu(fmu_name)
# Simulate
res = model.simulate(final_time=200)
x_16 = res['binary_dist_initial.x[16]']
y_16 = res['binary_dist_initial.y[16]']
x_32 = res['binary_dist_initial.x[32]']
y_32 = res['binary_dist_initial.y[32]']
t = res['time']
assert N.abs(res.final('binary_dist_initial.x[16]') - 0.49931368) < 1e-3
assert N.abs(res.final('binary_dist_initial.y[16]') - 0.61473464) < 1e-3
assert N.abs(res.final('binary_dist_initial.x[32]') - 0.18984724) < 1e-3
assert N.abs(res.final('binary_dist_initial.y[32]') - 0.27269352) < 1e-3
# Plot the results
if with_plots:
plt.figure(1)
plt.clf()
plt.subplot(2,1,1)
plt.plot(t,x_16,'b')
plt.hold(True)
plt.plot(t,x_32,'b')
plt.title('Liquid composition')
plt.grid(True)
plt.subplot(2,1,2)
plt.plot(t,y_16,'b')
plt.hold(True)
plt.plot(t,y_32,'b')
plt.title('Vapor composition')
plt.grid(True)
plt.show()
def test_simulate(self):
cpath = 'Asserts.ModelicaError'
fmu_name = compile_fmu(cpath, TestModelicaError.fpath)
model = load_fmu(fmu_name)
try:
model.simulate(final_time = 3)
assert False, 'Simulation not stopped by calls to ModelicaError()'
except CVodeError, e:
assert abs(e.t - 2.0) < 0.01, 'Simulation stopped at wrong time'
def test_ExtFuncShared(self):
"""
Test compiling a model with external functions in a shared library. Simple.
"""
cpath = "ExtFunctionTests.ExtFunctionTest1"
fmu_name = compile_fmu(cpath, TestExternalShared.fpath, compiler_options={'variability_propagation':False})
model = load_fmu(fmu_name)
res = model.simulate()
nose.tools.assert_equals(res.final('c'), 3)
def test_ExtFuncBool(self):
"""
Test compiling a model with external functions in a shared library. Boolean arrays.
"""
fmu_name = compile_fmu(self.cpath, self.fpath, compiler_options={'variability_propagation':False})
model = load_fmu(fmu_name)
model.simulate()
fmu_name = compile_fmu(self.cpath, self.fpath, compiler_options={'variability_propagation':True})
model2 = load_fmu(fmu_name)
model2.simulate()
trueInd = {1,2,3,5,8}
falseInd = {4,6,7}
for i in trueInd:
assert(model.get('res[' + str(i) + ']'))
assert(model2.get('res[' + str(i) + ']'))
for i in falseInd:
assert(not model.get('res[' + str(i) + ']'))
assert(not model2.get('res[' + str(i) + ']'))
def test_compile_fmu_mop(self):
"""
Test that it is possible to compile an FMU from a .mop file with
pymodelica.compile_fmu.
"""
fmuname = compile_fmu(Test_Compiler.cpath_mc, Test_Compiler.fpath_oc)
assert os.access(fmuname, os.F_OK) == True, \
fmuname+" was not created."
os.remove(fmuname)
def __init__(self):
self.TimeZero = 0 # in TimeStep steps
self.t = 0 # current time in TimeStep steps
self.statekeys = ['env.avg0', 'env.adm0', 'env.n0', 'env.depth0', 'monitor.y0', 'sys.x0']
self.inputkeys = ['noise0', 'failures0']
self.getdict = {}
self.getdict['env.avg0'] = 'env.x.avg'
self.getdict['env.adm0'] = 'env.x.adm'
self.getdict['env.n0'] = 'env.x.n'
self.getdict['env.depth0'] = 'env.x.depth'
self.getdict['env.noise0'] = 'env.d.noise'
self.getdict['env.failures0'] = 'env.d.failures'
self.getdict['monitor.y0'] = 'monitor.y'
self.getdict['sys.x0'] = 'sys.x'
# self.state = {}
#for k in self.statekeys :
# self.state[k] = self.model.get(self.getdict[k])
self.time = {}
self.time['start'] = self.t
#self.act = {}
# self.act['time'] = self.StartTime
#for k in self.inputkeys :
# self.act[k] = self.model.get(self.getdict[k])
self.actlist = [-1, 0.0, 1]
self.fmu = compile_fmu('ClosedSystem', ['closed-system.mo', 'system.mo', 'monitor.mo', 'environment.mo', 'dictionary.mo', 'state.mo'])
self.create_model()
#self.model = load_fmu(self.fmu)
#self.opts = self.model.simulate_options()
#self.opts['CVode_options']['verbosity'] = 50 # No output
#self.opts['initialize'] = False
#self.model.time = self.start_time(self.t)
#self.model.initialize()
#for k in self.statekeys :
# self.state[k] = self.model.get(self.getdict[k])
#for k in self.inputkeys :
# self.state[k] = self.model.get(self.getdict[k])
# get time step from disturbance model
self.TimeStep = self.model.get('env.T') # in seconds
def test_IntegerArraysCeval(self):
"""
Test a model with external functions containing integer array and literal inputs. Constant evaluation during compilation.
"""
cpath = "ExtFunctionTests.ExtFunctionTest4"
fmu_name = compile_fmu(cpath, TestExternalStatic.fpath, compiler_options={'variability_propagation':True})
model = load_fmu(fmu_name)
nose.tools.assert_equals(model.get('myResult[1]'), 2)
nose.tools.assert_equals(model.get('myResult[2]'), 4)
nose.tools.assert_equals(model.get('myResult[3]'), 6)
def run_demo(with_plots=True):
"""
Demonstrate how to do batch simulations
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
# Define model file name and class name
model_name = 'VDP_pack.VDP'
mofile = curr_dir+'/files/VDP.mop'
# Compile model
fmu_name = compile_fmu(model_name,mofile)
# Define initial conditions
N_points = 11
x1_0 = N.linspace(-3.,3.,N_points)
x2_0 = N.zeros(N_points)
# Open phase plane plot
if with_plots:
fig = p.figure()
p.clf()
p.hold(True)
p.xlabel('x1')
p.ylabel('x2')
# Loop over initial conditions
for i in range(N_points):
# Load model
model = load_fmu(fmu_name)
# Set initial conditions in model
model.set('x1_0',x1_0[i])
model.set('x2_0',x2_0[i])
# Simulate
res = model.simulate(final_time=20)
# Get simulation result
x1=res['x1']
x2=res['x2']
# Plot simulation result in phase plane plot
if with_plots:
p.plot(x1, x2,'b')
assert N.abs(res.final('x1') - 1.75293937) < 1e-3
assert N.abs(res.final('x2') + 3.98830742e-01) < 1e-3
if with_plots:
p.grid()
p.show()
def test_get_nominal(self):
from pymodelica import compile_fmu
from pyfmi import load_fmu
fmu = load_fmu(compile_fmu("NominalTests.NominalTest3", TestNominal.mo_path))
n = fmu._get_nominal_continuous_states()
nose.tools.assert_almost_equal(n[0], 1.0)
nose.tools.assert_almost_equal(n[1], 1.0)
nose.tools.assert_almost_equal(n[2], 2.0)
nose.tools.assert_almost_equal(n[3], 6.0)
nose.tools.assert_almost_equal(n[4], 5.0)
def test_division(self):
cname = "JacGenTests.JacTestDiv"
fn = compile_fmu(
cname,
self.fname,
compiler_options={"generate_ode_jacobian": True, "eliminate_alias_variables": False},
version="2.0alpha",
)
m = FMUModel2(fn)
m.set_debug_logging(True)
Afd, Bfd, Cfd, Dfd, n_errs = m.check_jacobians(delta_rel=1e-6, delta_abs=1e-3, tol=1e-5)
assert n_errs == 0
def test_IntegerArrays(self):
"""
Test a model with external functions containing integer array and literal inputs.
"""
cpath = "ExtFunctionTests.ExtFunctionTest4"
fmu_name = compile_fmu(cpath, TestExternalStatic.fpath, compiler_options={'variability_propagation':False})
model = load_fmu(fmu_name)
res = model.simulate()
nose.tools.assert_equals(res.final('myResult[1]'), 2)
nose.tools.assert_equals(res.final('myResult[2]'), 4)
nose.tools.assert_equals(res.final('myResult[3]'), 6)
def test_Unsolved_blocks6(self):
cname = "JacGenTests.Unsolved_blocks6"
fn = compile_fmu(
cname,
self.fname,
compiler_options={"generate_ode_jacobian": True, "eliminate_alias_variables": False},
version="2.0alpha",
)
m = FMUModel2(fn)
m.set_debug_logging(True)
m.initialize(relativeTolerance=1e-11)
Afd, Bfd, Cfd, Dfd, n_errs = m.check_jacobians(delta_rel=1e-6, delta_abs=1e-3, tol=1e-5)
assert n_errs == 0
def test_ExtObjectDestructor(self):
"""
Test compiling a model with external object functions in a static library.
"""
cpath = 'ExtFunctionTests.ExternalObjectTests1'
fmu_name = compile_fmu(cpath, TestExternalObject.fpath)
model = load_fmu(fmu_name)
model.simulate()
model.terminate()
if (os.path.exists('test_ext_object.marker')):
os.remove('test_ext_object.marker')
else:
assert False, 'External object destructor not called.'
def run_demo(with_plots=True):
"""
Distillation1 model
"""
curr_dir = os.path.dirname(os.path.abspath(__file__));
fmu_name1 = compile_fmu("JMExamples.Distillation.Distillation1Inputstep",
curr_dir+"/files/JMExamples.mo")
dist1 = load_fmu(fmu_name1)
res = dist1.simulate(final_time=7200)
# Extract variable profiles
x1 = res['x[1]']
x8 = res['x[8]']
x16 = res['x[16]']
x24 = res['x[24]']
x32 = res['x[32]']
y1 = res['y[1]']
y8 = res['y[8]']
y16 = res['y[16]']
y24 = res['y[24]']
y32 = res['y[32]']
t = res['time']
print "t = ", repr(N.array(t))
print "x16 = ", repr(N.array(x16))
print "x32 = ", repr(N.array(x32))
print "y16 = ", repr(N.array(y16))
print "y32 = ", repr(N.array(y32))
if with_plots:
# Plot
plt.figure()
plt.subplot(1,2,1)
plt.plot(t,x16,t,x32,t,x1,t,x8,t,x24)
plt.title('Liquid composition')
plt.grid(True)
plt.ylabel('x')
plt.subplot(1,2,2)
plt.plot(t,y16,t,y32,t,y1,t,y8,t,y24)
plt.title('Vapor composition')
plt.grid(True)
plt.ylabel('y')
plt.xlabel('time')
plt.show()
# If the argument is a file, then parse it to a model name
if os.path.isfile(sys.argv[1]):
model = sys.argv[1].replace(os.path.sep, '.')[:-3]
else:
model = sys.argv[1]
print("*** Compiling {}".format(model))
# Increase memory
pymodelica.environ['JVM_ARGS'] = '-Xmx4096m'
sys.stdout.flush()
######################################################################
# Compile fmu
fmu_name = compile_fmu(model,
version="2.0",
compiler_log_level='warning',
compiler_options={"generate_html_diagnostics": False})
######################################################################
# Load model
mod = load_fmu(fmu_name, log_level=3)
######################################################################
# Retrieve and set solver options
x_nominal = mod.nominal_continuous_states
opts = mod.simulate_options() #Retrieve the default options
opts['solver'] = 'CVode'
opts['ncp'] = 5000
if opts['solver'].lower() == 'cvode':
def __init__(self,
file_path,
model_name,
K,
dt,
t_final,
start_values,
ctrl_point,
output_names,
input_names,
input_ranges,
par_values={},
obs_var_names=None,
par_changes=ParameterChanges(),
sim_options={},
noise=0):
"""
Creates an LQR object containing a simulated process to
run it on.
Parameters::
file_path --
The path of the .mop file containing the model to be used for
simulating the process.
model_name --
The name of the model in the file specified by file_path to be
used for the simulated process.
K --
The linear gain feedback matrix used to calculate the control
signal from the state vector.
dt --
The time to wait in between each sample.
t_final --
The total time to run the real time LQR.
start_values --
A dictionary containing the initial state values for the process.
ctrl_point --
A dictionary containing the initial control point, with the keys
being state names and values their values.
output_names --
A list of the names of all of the output variables used in the
model.
input_names --
A list of the names of all of the input variables used in the
model.
input_ranges --
A list of the ranges to clamp the input control signals to,
in the same order as in input_names. Each range should be a
pair with the first element being the lower bound and the
second being the upper.
par_changes --
A ParameterChanges object containing parameter changes and the
times they should be applied.
Default: An empty ParameterChanges object
obs_var_names --
A list of the names of all state variables that should be
observable. If set to None, all state variables are assumed
to be observable.
Default: None
sim_options --
A dictionary of options to be used for the simulation.
noise --
Standard deviation of the noise to add to the input signals.
Default: 0
"""
super(LQRSimBase, self).__init__(K, dt, t_final, start_values,
ctrl_point, output_names, input_names,
input_ranges, par_changes, noise)
if obs_var_names is not None:
self.obs_var_names = obs_var_names
else:
self.obs_var_names = output_names
self.sim_options = {
'initialize': False,
'CVode_options': {
'verbosity': 50
}
}
if 'CVode_options' in sim_options:
self.sim_options['CVode_options'].update(
sim_options['CVode_options'])
for k in sim_options:
if k != 'CVode_options':
self.sim_options[k] = sim_options[k]
sim_fmu = compile_fmu(
model_name,
file_path,
compiler_options={'state_initial_equations': True})
self.model = load_fmu(sim_fmu)
self.model.set(start_values.keys(), start_values.values())
self.model.set(par_values.keys(), par_values.values())
self.model.initialize()
self.t = 0
self._realtime = False
def __init__(self,
file_path,
opt_name,
model_name,
dt,
t_hor,
t_final,
start_values,
par_values,
output_names,
input_names,
obs_var_names=None,
par_changes=ParameterChanges(),
mpc_options={},
sim_options={},
constr_viol_costs={},
noise=0):
"""
Creates an MPC object containing a simulated process to
run it on.
Parameters::
file_path --
The path of the .mop file containing the model to be used for
the MPC solver.
opt_name --
The name of the optimization in the file specified by file_path
to be used by the MPC solver.
model_name --
The name of the model in the file specified by file_path to be
used for the simulated process.
dt --
The time to wait in between each sample.
t_hor --
The horizon time for the MPC solver. Must be an even multiple
of dt.
t_final --
The total time to run the real time MPC.
start_values --
A dictionary containing the initial state values for the process.
par_values --
A dictionary containing parameter values to be set in the model.
output_names --
A list of the names of all of the output variables used in the
model.
input_names --
A list of the names of all of the input variables used in the
model.
obs_var_names --
A list of the names of all state variables that should be
observable. If set to None, all state variables are assumed
to be observable.
Default: None
par_changes --
A ParameterChanges object containing parameter changes and the
times they should be applied.
Default: An empty ParameterChanges object
mpc_options --
A dictionary of options to be used for the MPC solver.
sim_options --
A dictionary of options to be used for the simulation.
constr_viol_costs --
Constraint violation costs used by the MPC solver. See the
documentation of the MPC class for more information.
noise --
Standard deviation of the noise to add to the input signals.
Default: 0
"""
super(MPCSimBase,
self).__init__(file_path, opt_name, dt, t_hor, t_final,
start_values, par_values, output_names,
input_names, par_changes, mpc_options,
constr_viol_costs, noise)
if obs_var_names is not None:
self.obs_var_names = obs_var_names
else:
self.obs_var_names = output_names
self.sim_options = {
'initialize': False,
'CVode_options': {
'verbosity': 50
}
}
if 'CVode_options' in sim_options:
self.sim_options['CVode_options'].update(
sim_options['CVode_options'])
for k in sim_options:
if k != 'CVode_options':
self.sim_options[k] = sim_options[k]
sim_fmu = compile_fmu(
model_name,
file_path,
compiler_options={'state_initial_equations': True})
self.model = load_fmu(sim_fmu)
self.model.set(start_values.keys(), start_values.values())
self.model.set(par_values.keys(), par_values.values())
self.model.initialize()
self.t = 0
self._realtime = False
from pymodelica import compile_fmu
from pyfmi import load_fmu
import matplotlib.pyplot as plt
from pyjmi.common.plotting import plot_gui # or pyfmi.common.plotting import plot_gui
##
model_name = 'Buildings.Fluid.Boilers.Examples.BoilerPolynomial'
mo_file = 'C:\Users\James\Desktop\Buildings 4.0.0'
fmu = compile_fmu(model_name, mo_file)
model = load_fmu(fmu)
res = model.simulate(final_time=10.)
t = res['time']
T = res['boi1.temSen.T']
plt.figure(1)
plt.plot(t, T)
plt.grid(True)
plt.legend(['T'])
plt.xlabel('time [s]')
plt.ylabel('T')
plt.show()
plot_gui.startGUI()
def run_demo(with_plots=True):
"""
This example is based on a combined cycle power plant (CCPP). The model has
9 states, 128 algebraic variables and 1 control variable. The task is to
minimize the time required to perform a warm start-up of the power plant.
This problem has become highly industrially relevant during the last few
years, due to an increasing need to improve power generation flexibility.
The example consists of the following steps:
1. Simulating the system using a simple input trajectory.
2. Solving the optimal control problem using the result from the first
step to initialize the non-linear program.
3. Verifying the result from the second step by simulating the system
once more usng the optimized input trajectory.
The model was developed by Francesco Casella and was published in
@InProceedings{CFA2011,
author = "Casella, Francesco and Donida, Filippo and {\AA}kesson, Johan",
title = "Object-Oriented Modeling and Optimal Control: A Case Study in
Power Plant Start-Up",
booktitle = "18th IFAC World Congress",
address = "Milano, Italy",
year = 2011,
month = aug
}
"""
### 1. Compute initial guess trajectories by means of simulation
# Locate the Modelica and Optimica code
file_paths = (os.path.join(get_files_path(), "CombinedCycle.mo"),
os.path.join(get_files_path(), "CombinedCycleStartup.mop"))
# Compile the optimization initialization model
init_sim_fmu = compile_fmu("CombinedCycleStartup.Startup6Reference",
file_paths)
# Load the model
init_sim_model = load_fmu(init_sim_fmu)
# Simulate
init_res = init_sim_model.simulate(start_time=0., final_time=10000.)
# Extract variable profiles
init_sim_plant_p = init_res['plant.p']
init_sim_plant_sigma = init_res['plant.sigma']
init_sim_plant_load = init_res['plant.load']
init_sim_time = init_res['time']
# Plot the initial guess trajectories
if with_plots:
plt.close(1)
plt.figure(1)
plt.subplot(3, 1, 1)
plt.plot(init_sim_time, init_sim_plant_p * 1e-6)
plt.ylabel('evaporator pressure [MPa]')
plt.grid(True)
plt.title('Initial guess obtained by simulation')
plt.subplot(3, 1, 2)
plt.plot(init_sim_time, init_sim_plant_sigma * 1e-6)
plt.grid(True)
plt.ylabel('turbine thermal stress [MPa]')
plt.subplot(3, 1, 3)
plt.plot(init_sim_time, init_sim_plant_load)
plt.grid(True)
plt.ylabel('input load [1]')
plt.xlabel('time [s]')
### 2. Solve the optimal control problem
# Compile model
fmux = compile_fmux("CombinedCycleStartup.Startup6", file_paths)
# Load model
opt_model = CasadiModel(fmux)
# Set options
opt_opts = opt_model.optimize_options()
opt_opts['n_e'] = 50 # Number of elements
opt_opts['init_traj'] = init_res.result_data # Simulation result
opt_opts['nominal_traj'] = init_res.result_data
# Solve the optimal control problem
opt_res = opt_model.optimize(options=opt_opts)
# Extract variable profiles
opt_plant_p = opt_res['plant.p']
opt_plant_sigma = opt_res['plant.sigma']
opt_plant_load = opt_res['plant.load']
opt_time = opt_res['time']
opt_input = N.vstack([opt_time, opt_plant_load]).T
# Plot the optimized trajectories
if with_plots:
plt.close(2)
plt.figure(2)
plt.subplot(3, 1, 1)
plt.plot(opt_time, opt_plant_p * 1e-6)
plt.ylabel('evaporator pressure [MPa]')
plt.grid(True)
plt.title('Optimized trajectories')
plt.subplot(3, 1, 2)
plt.plot(opt_time, opt_plant_sigma * 1e-6)
plt.grid(True)
plt.ylabel('turbine thermal stress [MPa]')
plt.subplot(3, 1, 3)
plt.plot(opt_time, opt_plant_load)
plt.grid(True)
plt.ylabel('input load [1]')
plt.xlabel('time [s]')
# Verify solution for testing purposes
try:
import casadi
except:
pass
else:
cost = float(opt_res.solver.solver_object.output(casadi.NLP_SOLVER_F))
N.testing.assert_allclose(cost, 17492.465548193624, rtol=1e-5)
### 3. Simulate to verify the optimal solution
# Compile model
sim_fmu = compile_fmu("CombinedCycle.Optimization.Plants.CC0D_WarmStartUp",
file_paths)
# Load model
sim_model = load_fmu(sim_fmu)
# Simulate using optimized input
sim_res = sim_model.simulate(start_time=0., final_time=4000.,
input=('load', opt_input))
# Extract variable profiles
sim_plant_p = sim_res['p']
sim_plant_sigma = sim_res['sigma']
sim_plant_load = sim_res['load']
sim_time = sim_res['time']
# Plot the simulated trajectories
if with_plots:
plt.close(3)
plt.figure(3)
plt.subplot(3, 1, 1)
plt.plot(opt_time, opt_plant_p * 1e-6, '--', lw=5)
plt.hold(True)
plt.plot(sim_time, sim_plant_p * 1e-6, lw=2)
plt.ylabel('evaporator pressure [MPa]')
plt.grid(True)
plt.legend(('optimized', 'simulated'), loc='lower right')
plt.title('Verification')
plt.subplot(3, 1, 2)
plt.plot(opt_time, opt_plant_sigma * 1e-6, '--', lw=5)
plt.hold(True)
plt.plot(sim_time, sim_plant_sigma * 1e-6, lw=2)
plt.ylabel('turbine thermal stress [MPa]')
plt.grid(True)
plt.subplot(3, 1, 3)
plt.plot(opt_time, opt_plant_load, '--', lw=5)
plt.hold(True)
plt.plot(sim_time, sim_plant_load, lw=2)
plt.ylabel('input load [1]')
plt.xlabel('time [s]')
plt.grid(True)
plt.show()
# Verify solution for testing purposes
N.testing.assert_allclose(opt_res.final('plant.p'),
sim_res.final('p'), rtol=5e-3)
DATARAW.index)) # change 'str' to datetime obj
DATARAW['time'] = H_date2simtime(DATARAW.index, '2018')
DATA = DATARAW.reindex(simtimedate, method='nearest') # resample or reindex
QBL = DATA[['QBL', 'time']].fillna(method='ffill')
QCHL = DATA[['QCHLsum', 'time']].fillna(value=0)
Twb = DATA[['Twb', 'time']].fillna(method='ffill')
Pow = DATA[['PCHsum', 'PCTtot', 'time']].sum(axis=1)
del DATARAW, DATA
os.chdir(currentdir)
#%% modelica model test
modelname = 'Merced.CoolingPlantNew.Dummytest'
modelicafile = '/home/adun6414/Work/CERC_UCM/Merced/CoolingPlantNew/Dummytest.mo'
import pymodelica
import pyfmi
myfmu = pymodelica.compile_fmu(modelname, modelicafile)
fmuinpy = pyfmi.load_fmu(myfmu)
UW = fmuinpy.get_model_variables(causality=0)
Y = fmuinpy.get_model_variables(causality=1)
C = fmuinpy.get_model_variables(variability=1)
key_uw = UW.keys()
key_y = Y.keys()
key_c = [k for k in C.keys() if '_' not in k]
IN = (obj.key_uw[0], QBL[['time', 'QBL']].to_numpy())
opts = fmuinpy.simulate_options()
opts["ncp"] = IN[1].shape[
0] - 1 #Specify a number of output points that should be returned
def parse_instances(model_path, file_name):
'''Parse the signal exchange block class instances using fmu xml.
Parameters
----------
model_path : str
Path to modelica model
file_name : list
Path(s) to modelica file and required libraries not on MODELICAPATH.
Passed to file_name parameter of pymodelica.compile_fmu() in JModelica.
Returns
-------
instances : dict
Dictionary of overwrite and read block class instance lists.
{'Overwrite': {input_name : {Unit : unit_name, Description : description, Minimum : min, Maximum : max}},
'Read': {output_name : {Unit : unit_name, Description : description, Minimum : min, Maximum : max}}}
signals : dict
{'signal_type' : [output_name]}
'''
# Compile fmu
fmu_path = compile_fmu(model_path, file_name)
# Load fmu
fmu = load_fmu(fmu_path)
# Check version
if fmu.get_version() != '2.0':
raise ValueError('FMU version must be 2.0')
# Get all parameters
allvars = fmu.get_model_variables(variability = 0).keys() + \
fmu.get_model_variables(variability = 1).keys()
# Initialize dictionaries
instances = {'Overwrite': dict(), 'Read': dict()}
signals = {}
# Find instances of 'Overwrite' or 'Read'
for var in allvars:
# Get instance name
instance = '.'.join(var.split('.')[:-1])
# Overwrite
if 'boptestOverwrite' in var:
label = 'Overwrite'
unit = fmu.get_variable_unit(instance + '.u')
description = fmu.get(instance + '.description')[0]
mini = fmu.get_variable_min(instance + '.u')
maxi = fmu.get_variable_max(instance + '.u')
# Read
elif 'boptestRead' in var:
label = 'Read'
unit = fmu.get_variable_unit(instance + '.y')
description = fmu.get(instance + '.description')[0]
mini = None
maxi = None
# KPI
elif 'KPIs' in var:
label = 'kpi'
else:
continue
# Save instance
if label is not 'kpi':
instances[label][instance] = {'Unit': unit}
instances[label][instance]['Description'] = description
instances[label][instance]['Minimum'] = mini
instances[label][instance]['Maximum'] = maxi
else:
signal_type = fmu.get_variable_declared_type(var).items[fmu.get(
var)[0]][0]
if signal_type is 'None':
continue
elif signal_type in signals:
signals[signal_type].append(
_make_var_name(instance, style='output'))
else:
signals[signal_type] = [
_make_var_name(instance, style='output')
]
# Clean up
os.remove(fmu_path)
os.remove(fmu_path.replace('.fmu', '_log.txt'))
return instances, signals
def run_demo(with_plots=True):
"""
This example is based on the Hicks-Ray Continuously Stirred Tank Reactors
(CSTR) system. The system has two states, the concentration and the
temperature. The control input to the system is the temperature of the
cooling flow in the reactor jacket. The chemical reaction in the reactor is
exothermic, and also temperature dependent; high temperature results in high
reaction rate.
The problem is solved using the CasADi-based collocation algorithm. The
steps performed correspond to those demonstrated in
example pyjmi.examples.cstr, where the same problem is solved using the
default JMI algorithm. FMI is used for initialization and simulation
purposes.
The following steps are demonstrated in this example:
1. How to solve the initialization problem. The initialization model has
equations specifying that all derivatives should be identically zero,
which implies that a stationary solution is obtained. Two stationary
points, corresponding to different inputs, are computed. We call the
stationary points A and B respectively. Point A corresponds to
operating conditions where the reactor is cold and the reaction rate is
low, whereas point B corresponds to a higher temperature where the
reaction rate is high.
2. How to generate an initial guess for a direct collocation method by
means of simulation with a constant input. The trajectories resulting
from the simulation are used to initialize the variables in the
transcribed NLP.
3. An optimal control problem is solved where the objective is to transfer
the state of the system from stationary point A to point B. The
challenge is to ignite the reactor while avoiding uncontrolled
temperature increase.
4. Finally the system is simulated using the optimal control profile. This
step is important in order to verify that the approximation in the
transcription step is sufficiently accurate.
"""
### 1. Solve the initialization problem
# Locate the Modelica and Optimica code
file_path = os.path.join(get_files_path(), "CSTR.mop")
# Compile the stationary initialization model into a FMU
init_fmu = compile_fmu("CSTR.CSTR_Init", file_path)
# Load the FMU
init_model = load_fmu(init_fmu)
# Set input for Stationary point A
Tc_0_A = 250
init_model.set('Tc', Tc_0_A)
# Solve the initialization problem using FMI
init_model.initialize()
# Store stationary point A
[c_0_A, T_0_A] = init_model.get(['c', 'T'])
# Print some data for stationary point A
print(' *** Stationary point A ***')
print('Tc = %f' % Tc_0_A)
print('c = %f' % c_0_A)
print('T = %f' % T_0_A)
# Set inputs for Stationary point B
init_model = load_fmu(init_fmu)
Tc_0_B = 280
init_model.set('Tc', Tc_0_B)
# Solve the initialization problem using FMI
init_model.initialize()
# Store stationary point B
[c_0_B, T_0_B] = init_model.get(['c', 'T'])
# Print some data for stationary point B
print(' *** Stationary point B ***')
print('Tc = %f' % Tc_0_B)
print('c = %f' % c_0_B)
print('T = %f' % T_0_B)
### 2. Compute initial guess trajectories by means of simulation
# Compile the optimization initialization model
init_sim_fmu = compile_fmu("CSTR.CSTR_Init_Optimization", file_path)
# Load the model
init_sim_model = load_fmu(init_sim_fmu)
# Set initial and reference values
init_sim_model.set('cstr.c_init', c_0_A)
init_sim_model.set('cstr.T_init', T_0_A)
init_sim_model.set('c_ref', c_0_B)
init_sim_model.set('T_ref', T_0_B)
init_sim_model.set('Tc_ref', Tc_0_B)
# Simulate with constant input Tc
init_res = init_sim_model.simulate(start_time=0., final_time=150.)
# Extract variable profiles
c_init_sim = init_res['cstr.c']
T_init_sim = init_res['cstr.T']
Tc_init_sim = init_res['cstr.Tc']
t_init_sim = init_res['time']
# Plot the initial guess trajectories
if with_plots:
plt.close(1)
plt.figure(1)
plt.hold(True)
plt.subplot(3, 1, 1)
plt.plot(t_init_sim, c_init_sim)
plt.grid()
plt.ylabel('Concentration')
plt.title('Initial guess obtained by simulation')
plt.subplot(3, 1, 2)
plt.plot(t_init_sim, T_init_sim)
plt.grid()
plt.ylabel('Temperature')
plt.subplot(3, 1, 3)
plt.plot(t_init_sim, Tc_init_sim)
plt.grid()
plt.ylabel('Cooling temperature')
plt.xlabel('time')
plt.show()
### 3. Solve the optimal control problem
# Compile model
fmux = compile_fmux("CSTR.CSTR_Opt2", file_path)
# Load model
cstr = CasadiModel(fmux)
# Set reference values
cstr.set('Tc_ref', Tc_0_B)
cstr.set('c_ref', c_0_B)
cstr.set('T_ref', T_0_B)
# Set initial values
cstr.set('cstr.c_init', c_0_A)
cstr.set('cstr.T_init', T_0_A)
# Set options
opt_opts = cstr.optimize_options()
opt_opts['n_e'] = 100 # Number of elements
opt_opts['init_traj'] = init_res.result_data
opt_opts['nominal_traj'] = init_res.result_data
opt_opts['IPOPT_options']['tol'] = 1e-10
# Solve the optimal control problem
res = cstr.optimize(options=opt_opts)
# Extract variable profiles
c_res = res['cstr.c']
T_res = res['cstr.T']
Tc_res = res['cstr.Tc']
time_res = res['time']
c_ref = res['c_ref']
T_ref = res['T_ref']
Tc_ref = res['Tc_ref']
# Verify solution for testing purposes
try:
import casadi
except:
pass
else:
cost = float(res.solver.solver.output(casadi.NLP_SOLVER_F))
assert(N.abs(cost/1.e3 - 1.8585429) < 1e-3)
# Plot the results
if with_plots:
plt.close(2)
plt.figure(2)
plt.hold(True)
plt.subplot(3, 1, 1)
plt.plot(time_res, c_res)
plt.plot([time_res[0], time_res[-1]], [c_ref, c_ref], '--')
plt.grid()
plt.ylabel('Concentration')
plt.title('Optimized trajectories')
plt.subplot(312)
plt.plot(time_res,T_res)
plt.plot([time_res[0],time_res[-1]],[T_ref,T_ref],'--')
plt.grid()
plt.ylabel('Temperature')
plt.subplot(313)
plt.plot(time_res,Tc_res)
plt.plot([time_res[0],time_res[-1]],[Tc_ref,Tc_ref],'--')
plt.grid()
plt.ylabel('Cooling temperature')
plt.xlabel('time')
plt.show()
### 4. Simulate to verify the optimal solution
# Compile model
sim_fmu = compile_fmu("CSTR.CSTR", file_path)
# Load model
sim_model = load_fmu(sim_fmu)
# Get optimized input
(_, opt_input) = res.solver.get_opt_input()
# Set initial values
sim_model.set('c_init',c_0_A)
sim_model.set('T_init',T_0_A)
# Simulate using optimized input
sim_opts = sim_model.simulate_options()
sim_opts['CVode_options']['rtol'] = 1e-6
sim_opts['CVode_options']['atol'] = 1e-8
res = sim_model.simulate(start_time=0., final_time=150.,
input=('Tc', opt_input), options=sim_opts)
# Extract variable profiles
c_sim=res['c']
T_sim=res['T']
Tc_sim=res['Tc']
time_sim = res['time']
# Verify results
N.testing.assert_array_less(abs(c_res[-1] - c_sim[-1])/c_res[-1], 5e-2)
# Plot the results
if with_plots:
plt.close(3)
plt.figure(3)
plt.hold(True)
plt.subplot(3, 1, 1)
plt.plot(time_res, c_res, '--', lw=5)
plt.plot(time_sim, c_sim, lw=2)
plt.legend(('optimized', 'simulated'))
plt.grid(True)
plt.ylabel('Concentration')
plt.title('Verification')
plt.subplot(3, 1, 2)
plt.plot(time_res, T_res, '--', lw=5)
plt.plot(time_sim, T_sim, lw=2)
plt.grid(True)
plt.ylabel('Temperature')
plt.subplot(3, 1, 3)
plt.plot(time_res, Tc_res, '--', lw=5)
plt.plot(time_sim, Tc_sim, lw=2)
plt.grid(True)
plt.ylabel('Cooling temperature')
plt.xlabel('time')
plt.show()
],
axis=1)
emissions_boptest.to_csv(os.path.join(gen.resources_dir, 'emissions.csv'),
index=True)
#=====================================================================
# Generate variables from model
#=====================================================================
# Initialize data frame
df = gen.create_df()
file_name = os.path.join(os.path.dirname(os.path.abspath(__file__)),
'BESTESTHydronicHeatPump')
class_name = 'BESTESTHydronicHeatPump.TestCase'
# Compile the model to generate the data
fmu_path = compile_fmu(file_name=file_name, class_name=class_name)
# Load FMU
model = load_fmu(fmu_path)
# Set number of communication points
options = model.simulate_options()
options['ncp'] = len(gen.time) - 1
# Simulate
res = model.simulate(start_time=gen.time[0],
final_time=gen.time[-1],
options=options)
keysMap = {}
# give the path to directory where package.mo is stored
moLibs = [
os.path.join(jmodDir, "ThirdParty\MSL\Modelica"),
os.path.join(moLiDir, "BuildingSystems"),
]
print(sys.version)
print(
all(os.path.isfile(os.path.join(moLib, "package.mo")) for moLib in moLibs))
print(os.getcwd())
# <codecell> compile model to fmu
from pymodelica import compile_fmu
model_name = 'BuildingSystems.Applications.BuildingTypes.Germany.Rowhouse1918'
my_fmu = compile_fmu(model_name, moLibs)
# <codecell> simulate the fmu and store results
from pyfmi import load_fmu
myModel = load_fmu(my_fmu)
opts = myModel.simulate_options()
opts['solver'] = "CVode"
opts['ncp'] = 8760
opts['result_handling'] = "file"
opts["CVode_options"]['discr'] = 'BDF'
opts['CVode_options']['iter'] = 'Newton'
opts['CVode_options']['maxord'] = 5
opts['CVode_options']['atol'] = 1e-5
opts['CVode_options']['rtol'] = 1e-5
def generate_weather(
self,
model_class='IBPSA.BoundaryConditions.WeatherData.ReaderTMY3',
model_library=None):
'''Generate the weather data and store into a
csv file. This method reads the data
from a .mos or .TMY file and applies a transformation
carried out by the ReaderTMY3 model of the
IBPSA library. The user could provide any other
reader model but should then make sure that
the naming convention is accomplished.
Parameters
----------
model_class: string, default is IBPSA TMY3 Reader
Name of the model class that is going to be
used to pre-process the weather data. This is
most likely to be the ReaderTMY3 of IBPSA but
other classes could be created.
model_library: string, default is None
String to library path. If empty it will look
for IBPSA library in MODELICAPATH
'''
# Initialize data frame
df = self.create_df()
if not model_library:
# Try to find the IBPSA library
for p in os.environ['MODELICAPATH'].split(self.sep):
if os.path.isdir(os.path.join(p, 'IBPSA')):
model_library = os.path.join(p, 'IBPSA')
# Raise an error if ibpsa cannot be found
if not model_library:
raise ValueError('Provide a valid model_library or point '\
'to the IBPSA library in your MODELICAPATH')
# Path to modelica reader model file
model_file = model_library
for f in model_class.split('.')[1:]:
model_file = os.path.join(model_file, f)
model_file = model_file + '.mo'
# Edit the class to load the weather_file_name before compilation
str_old = 'filNam=""'
str_new = 'filNam=Modelica.Utilities.Files.loadResource("{0}")'\
.format(self.weather_file_name)
with open(model_file) as f:
newText = f.read().replace(str_old, str_new)
with open(model_file, "w") as f:
f.write(newText)
# Change to Resources directory
currdir = os.curdir
os.chdir(self.weather_dir)
# Compile the ReaderTMY3 from IBPSA using JModelica
fmu_path = compile_fmu(model_class, model_library)
# Revert changes in directory and model file
os.chdir(currdir)
with open(model_file) as f:
newText = f.read().replace(str_new, str_old)
with open(model_file, "w") as f:
f.write(newText)
# Load FMU
model = load_fmu(fmu_path)
# Set number of communication points
options = model.simulate_options()
options['ncp'] = len(self.time) - 1
# Simulate
res = model.simulate(start_time=self.time[0],
final_time=self.time[-1],
options=options)
# Get model outputs
output_names = []
for key in res.keys():
if 'weaBus.' in key:
output_names.append(key)
# Write every output in the data
for out in output_names:
# Interpolate to avoid problems with events from Modelica
g = interpolate.interp1d(res['time'], res[out], kind='linear')
df.loc[:, out.replace('weaBus.', '')] = g(self.time)
# Store in csv
self.store_df(df, 'weather')
return df
else:
model = sys.argv[1]
print("*** Compiling {}".format(model))
# Increase memory
pymodelica.environ['JVM_ARGS'] = '-Xmx4096m'
sys.stdout.flush()
######################################################################
# Compile fmu
fmu_name = compile_fmu(
model,
version="2.0",
compiler_log_level='warning', #'info', 'warning',
compiler_options={
"generate_html_diagnostics": True,
"event_output_vars": True,
"nle_solver_tol_factor": 1e-2
}) # 1e-2 is the default
######################################################################
# Copy style sheets.
# This is a hack to get the css and js files to render the html diagnostics.
htm_dir = os.path.splitext(os.path.basename(fmu_name))[0] + "_html_diagnostics"
if os.path.exists(htm_dir):
for fil in ["scripts.js", "style.css", "zepto.min.js"]:
src = os.path.join(".jmodelica_html", fil)
if os.path.exists(src):
des = os.path.join(htm_dir, fil)
shutil.copyfile(src, des)
from pymodelica import compile_fmu
print("Export Modelica models as FMU Model Exchange Version 2.0")
model_name = raw_input(
"What is the name of the Modelica model you would like to export? \n")
mo_file = raw_input(
"What is the name of the Modelica file? (ex. RLC_Circuit.mo). Multiple dependent files can be added as RLC_Circuit.mo, RLC_Dependent.mo"
)
# model_name = 'RLC_Circuit'
# mo_file = 'RLC_Circuit.mo'
my_fmu = compile_fmu(model_name, mo_file, version=2.0)
def write_wrapper(model_path, file_name, instances):
'''Write the wrapper modelica model and export as fmu
Parameters
----------
model_path : str
Path to orginal modelica model
file_name : list
Path(s) to modelica file and required libraries not on MODELICAPATH.
Passed to file_name parameter of pymodelica.compile_fmu() in JModelica.
instances : dict
Dictionary of overwrite and read block class instance lists.
{'Overwrite': [str], 'Read': [str]}
Returns
-------
fmu_path : str
Path to the wrapped modelica model fmu
wrapped_path : str or None
Path to the wrapped modelica model if instances of signale exchange.
Otherwise, None
'''
# Check for instances of Overwrite and/or Read blocks
len_write_blocks = len(instances['Overwrite'])
len_read_blocks = len(instances['Read'])
# If there are, write and export wrapper model
if (len_write_blocks + len_read_blocks):
# Define wrapper modelica file path
wrapped_path = 'wrapped.mo'
# Open file
with open(wrapped_path, 'w') as f:
# Start file
f.write('model wrapped "Wrapped model"\n')
# Add inputs for every overwrite block
f.write('\t// Input overwrite\n')
input_signals_w_info = dict()
input_signals_wo_info = dict()
input_activate_w_info = dict()
input_activate_wo_info = dict()
for block in instances['Overwrite'].keys():
# Add to signal input list with and without units
input_signals_w_info[block] = _make_var_name(
block,
style='input_signal',
description=instances['Overwrite'][block]['Description'],
attribute='(unit="{0}", min={1}, max={2})'.format(
instances['Overwrite'][block]['Unit'],
instances['Overwrite'][block]['Minimum'],
instances['Overwrite'][block]['Maximum']))
input_signals_wo_info[block] = _make_var_name(
block, style='input_signal')
# Add to signal activate list
input_activate_w_info[block] = _make_var_name(
block,
style='input_activate',
description='Activation for {0}'.format(
instances['Overwrite'][block]['Description']))
input_activate_wo_info[block] = _make_var_name(
block, style='input_activate')
# Instantiate input signal
f.write('\tModelica.Blocks.Interfaces.RealInput {0};\n'.format(
input_signals_w_info[block], block))
# Instantiate input activation
f.write(
'\tModelica.Blocks.Interfaces.BooleanInput {0};\n'.format(
input_activate_w_info[block], block))
# Add outputs for every read block
f.write('\t// Out read\n')
for block in instances['Read'].keys():
# Instantiate input signal
f.write(
'\tModelica.Blocks.Interfaces.RealOutput {0} = mod.{1}.y "{2}";\n'
.format(
_make_var_name(block,
style='output',
attribute='(unit="{0}")'.format(
instances['Read'][block]['Unit'])),
block, instances['Read'][block]['Description']))
# Add original model
f.write('\t// Original model\n')
f.write('\t{0} mod(\n'.format(model_path))
# Connect inputs to original model overwrite and activate signals
if len_write_blocks:
for i, block in enumerate(instances['Overwrite']):
f.write('\t\t{0}(uExt(y={1}),activate(y={2}))'.format(
block, input_signals_wo_info[block],
input_activate_wo_info[block]))
if i == len(instances['Overwrite']) - 1:
f.write(') "Original model with overwrites";\n')
else:
f.write(',\n')
else:
f.write(') "Original model without overwrites";\n')
# End file
f.write('end wrapped;')
# Export as fmu
fmu_path = compile_fmu('wrapped', [wrapped_path] + file_name)
# If there are not, write and export wrapper model
else:
# Warn user
warnings.warn(
'No signal exchange block instances found in model. Exporting model as is.'
)
# Compile fmu
fmu_path = compile_fmu(model_path, file_name)
wrapped_path = None
return fmu_path, wrapped_path
def run_demo(with_plots=True):
"""
This example is based on a combined cycle power plant (CCPP). The model has
9 states, 128 algebraic variables and 1 control variable. The task is to
minimize the time required to perform a warm start-up of the power plant.
This problem has become highly industrially relevant during the last few
years, due to an increasing need to improve power generation flexibility.
The example consists of the following steps:
1. Simulating the system using a simple input trajectory.
2. Solving the optimal control problem using the result from the first
step to initialize the non-linear program. In addition, a set of
algebraic variables is eliminated by means of BLt information
3. Verifying the result from the second step by simulating the system
once more usng the optimized input trajectory.
The model was developed by Francesco Casella and is published in
@InProceedings{CFA2011,
author = "Casella, Francesco and Donida, Filippo and {\AA}kesson, Johan",
title = "Object-Oriented Modeling and Optimal Control: A Case Study in
Power Plant Start-Up",
booktitle = "18th IFAC World Congress",
address = "Milano, Italy",
year = 2011,
month = aug
}
"""
### 1. Compute initial guess trajectories by means of simulation
# Locate the Modelica and Optimica code
file_paths = (os.path.join(get_files_path(), "CombinedCycle.mo"),
os.path.join(get_files_path(), "CombinedCycleStartup.mop"))
# Compile the optimization initialization model
init_sim_fmu = compile_fmu("CombinedCycleStartup.Startup6Reference",
file_paths, separate_process=True)
# Load the model
init_sim_model = load_fmu(init_sim_fmu)
# Simulate
init_res = init_sim_model.simulate(start_time=0., final_time=10000.)
# Extract variable profiles
init_sim_plant_p = init_res['plant.p']
init_sim_plant_sigma = init_res['plant.sigma']
init_sim_plant_load = init_res['plant.load']
init_sim_time = init_res['time']
# Plot the initial guess trajectories
if with_plots:
plt.close(1)
plt.figure(1)
plt.subplot(3, 1, 1)
plt.plot(init_sim_time, init_sim_plant_p * 1e-6)
plt.ylabel('evaporator pressure [MPa]')
plt.grid(True)
plt.title('Initial guess obtained by simulation')
plt.subplot(3, 1, 2)
plt.plot(init_sim_time, init_sim_plant_sigma * 1e-6)
plt.grid(True)
plt.ylabel('turbine thermal stress [MPa]')
plt.subplot(3, 1, 3)
plt.plot(init_sim_time, init_sim_plant_load)
plt.grid(True)
plt.ylabel('input load [1]')
plt.xlabel('time [s]')
### 2. Solve the optimal control problem
# Compile model
from pyjmi import transfer_to_casadi_interface
compiler_options={'equation_sorting':True, "common_subexp_elim":False}
op = transfer_to_casadi_interface("CombinedCycleStartup.Startup6",
file_paths, compiler_options)
# Set options
opt_opts = op.optimize_options()
opt_opts['n_e'] = 50 # Number of elements
opt_opts['init_traj'] = init_res # Simulation result
opt_opts['nominal_traj'] = init_res
# variable elimination
eliminables = op.getEliminableVariables()
algebraics = op.getVariables(op.REAL_ALGEBRAIC)
print("Number of algebraics: ",len(algebraics))
print("Eliminating variables!")
eliminable_algebraics = [a for a in algebraics if a in eliminables]
variables_to_eliminate = list()
variables_with_bounds = list()
for v in eliminable_algebraics:
if not v.hasAttributeSet("min") and not v.hasAttributeSet("max"):
variables_to_eliminate.append(v)
else:
variables_with_bounds.append(v)
# Elimination of unbounded variables
op.markVariablesForElimination(variables_to_eliminate)
# Elimination of bounded variables (skip elimination of plant.sigma)
bounded_eliminations = [v for v in variables_with_bounds if not v.getName()=="plant.sigma"]
op.markVariablesForElimination(bounded_eliminations)
op.eliminateVariables()
# Alternative way of eliminating variables however this method do not eliminate any bounded variables
#op.eliminateAlgebraics()
print("Done with elimination")
eliminated_vars = op.getEliminatedVariables()
print("Number of variables that were eliminated: ", len(eliminated_vars))
# Solve the optimal control problem
opt_res = op.optimize(options=opt_opts)
# get output of one eliminated variable
elim_var_name = eliminable_algebraics[5].getName()
# Extract variable profiles
opt_plant_p = opt_res['plant.p']
opt_plant_sigma = opt_res['plant.sigma']
opt_plant_load = opt_res['plant.load']
opt_eliminated = opt_res[elim_var_name]
opt_time = opt_res['time']
opt_input = N.vstack([opt_time, opt_plant_load]).T
# Plot the optimized trajectories
if with_plots:
plt.close(2)
plt.figure(2)
plt.subplot(4, 1, 1)
plt.plot(opt_time, opt_plant_p * 1e-6)
plt.ylabel('evaporator pressure [MPa]')
plt.grid(True)
plt.title('Optimized trajectories')
plt.subplot(4, 1, 2)
plt.plot(opt_time, opt_plant_sigma * 1e-6)
plt.grid(True)
plt.ylabel('turbine thermal stress [MPa]')
plt.subplot(4, 1, 3)
plt.plot(opt_time, opt_plant_load)
plt.grid(True)
plt.ylabel('input load [1]')
plt.xlabel('time [s]')
plt.subplot(4, 1, 4)
plt.plot(opt_time, opt_eliminated)
plt.grid(True)
plt.ylabel(elim_var_name)
plt.xlabel('time [s]')
# Verify solution for testing purposes
try:
import casadi
except:
pass
else:
cost = float(opt_res.solver.solver_object.output(casadi.NLP_SOLVER_F))
N.testing.assert_allclose(cost, 17492.465548193624, rtol=1e-5)
### 3. Simulate to verify the optimal solution
# Compile model
sim_fmu = compile_fmu("CombinedCycle.Optimization.Plants.CC0D_WarmStartUp",
file_paths)
# Load model
sim_model = load_fmu(sim_fmu)
# Simulate using optimized input
sim_res = sim_model.simulate(start_time=0., final_time=4000.,
input=('load', opt_input))
# Extract variable profiles
sim_plant_p = sim_res['p']
sim_plant_sigma = sim_res['sigma']
sim_plant_load = sim_res['load']
sim_time = sim_res['time']
# Plot the simulated trajectories
if with_plots:
plt.close(3)
plt.figure(3)
plt.subplot(3, 1, 1)
plt.plot(opt_time, opt_plant_p * 1e-6, '--', lw=5)
plt.hold(True)
plt.plot(sim_time, sim_plant_p * 1e-6, lw=2)
plt.ylabel('evaporator pressure [MPa]')
plt.grid(True)
plt.legend(('optimized', 'simulated'), loc='lower right')
plt.title('Verification')
plt.subplot(3, 1, 2)
plt.plot(opt_time, opt_plant_sigma * 1e-6, '--', lw=5)
plt.hold(True)
plt.plot(sim_time, sim_plant_sigma * 1e-6, lw=2)
plt.ylabel('turbine thermal stress [MPa]')
plt.grid(True)
plt.subplot(3, 1, 3)
plt.plot(opt_time, opt_plant_load, '--', lw=5)
plt.hold(True)
plt.plot(sim_time, sim_plant_load, lw=2)
plt.ylabel('input load [1]')
plt.xlabel('time [s]')
plt.grid(True)
plt.show()
# Verify solution for testing purposes
N.testing.assert_allclose(opt_res.final('plant.p'),
sim_res.final('p'), rtol=5e-3)
from pymodelica import compile_fmu from pyfmi import load_fmu libPath = r'C:\Users\vmg\Documents\Modelica\TRANSFORM-Library/TRANSFORM' modelName = 'TRANSFORM.Examples.LightWaterSmallModularReactor.Examples.IRIS_Default_Teststandalone' fmu = compile_fmu(modelName, libPath, target='cs') model = load_fmu(fmu) opts = model.simulate_options() opts['time_limit'] = 60 results = model.simulate(options=opts)
from pymodelica import compile_fmu
fmu_name = compile_fmu("{{model_name}}", "{{model_name}}.mo",
version="{{fmi_version}}", target="{{fmi_api}}",
compiler_options={'extra_lib_dirs':["{{sim_lib_path}}"]})
# -*- coding: utf-8 -*- """ This module compiles the defined test case model into an FMU using the overwrite block parser. The following libraries must be on the MODELICAPATH: - Modelica IBPSA - Modelica Buildings """ from pymodelica import compile_fmu # DEFINE MODEL # ------------ # library path mopath = 'RCNetworks' # model path modelpath = 'RCNetworks.Examples.HighThermalMassWall' # ------------ # COMPILE FMU: set JVM maximum leap to 1G to avoid memory issues # ----------- #fmupath = parser.export_fmu(modelpath, [mopath]) fmupath = compile_fmu(modelpath, [mopath], jvm_args='-Xmx1g') # -----------
def run_demo():
"""
Demonstrate how to parse a log file from a JModelica FMU.
"""
curr_dir = os.path.dirname(os.path.abspath(__file__))
file_name = os.path.join(curr_dir, 'files', 'LoggerTest.mo')
fmu_name = compile_fmu(
'LoggerTest',
file_name,
compiler_log_level='i',
compiler_options={'generate_only_initial_system': True})
log_file_name = 'LoggerTest_log.txt'
m = load_fmu(fmu_name, log_file_name=log_file_name)
m.set_debug_logging(True)
m.set('_log_level', 6)
m.set_fmil_log_level(5)
# Play around with the model
m.set('u1', 3)
print 'u1' + str(m.get('u1'))
print 'x1' + str(m.get('x1'))
print 'y1' + str(m.get('y1'))
print 'z1' + str(m.get('z1'))
m.set('y1', 0.)
m.initialize()
print "model initialized"
print 'u1' + str(m.get('u1'))
print 'x1' + str(m.get('x1'))
print 'y1' + str(m.get('y1'))
print 'z1' + str(m.get('z1'))
m.set('u1', 4)
print "Input set"
print 'u1' + str(m.get('u1'))
print 'x1' + str(m.get('x1'))
print 'y1' + str(m.get('y1'))
print 'z1' + str(m.get('z1'))
m.get_derivatives()
m.set('y1', 0.5)
print "Set initial value of y1"
print 'x1' + str(m.get('x1'))
print 'y1' + str(m.get('y1'))
print 'z1' + str(m.get('z1'))
m.set('p', 0.5)
print "Set initial value of p"
print 'x1' + str(m.get('x1'))
print 'y1' + str(m.get('y1'))
print 'z1' + str(m.get('z1'))
# Parse the log file and print some of its contents
# Extract the log file XML contents into a pure XML file
dest_xml_file_name = 'LoggerTest_log.xml'
extract_jmi_log(dest_xml_file_name, log_file_name)
# Parse the entire XML log
log = parse_jmi_log(log_file_name)
print
print 'Top log node: log =', log
print 'Unnamed sub nodes: log.nodes = ['
for node in log.nodes:
print ' ', node, ','
print ']'
# Gather information pertaining to equation solves
solves = gather_solves(log)
print
print 'Number of solver invocations:', len(solves)
print 'Time of first solve:', solves[0].t
print 'Number of block solves in first solver invocation:', len(
solves[0].block_solves)
print 'Names of iteration variables in first block solve:', solves[
0].block_solves[0].variables
print 'Min bounds in first block solve:', solves[0].block_solves[0].min
print 'Max bounds in first block solve:', solves[0].block_solves[0].max
print 'Initial residual scaling in first block solve:', solves[
0].block_solves[0].initial_residual_scaling
print 'Number of iterations in first block solve:', len(
solves[0].block_solves[0].iterations)
print
print 'First iteration in first block solve: '
print ' Iteration variables:', solves[0].block_solves[0].iterations[0].ivs
print ' Scaled residuals:', solves[0].block_solves[0].iterations[
0].scaled_residuals
print ' Jacobian:\n', solves[0].block_solves[0].iterations[0].jacobian
print ' Jacobian updated in iteration:', solves[0].block_solves[
0].iterations[0].jacobian_updated
print ' Residual scaling factors:', solves[0].block_solves[0].iterations[
0].residual_scaling
print ' Residual scaling factors_updated:', solves[0].block_solves[
0].iterations[0].residual_scaling_updated
print ' Scaled residual norm:', solves[0].block_solves[0].iterations[
0].scaled_residual_norm
def run_demo(with_plots=True):
"""
This example is based on the multibody mechanics double pendulum example from the Modelica Standard Library (MSL).
The MSL example has been modified by adding a torque on the first revolute joint of the pendulum as a top-level
input. The considered optimization problem is to invert both pendulum bodies with bounded torque.
This example needs linear solver MA27 to work.
"""
# Simulate system with linear state feedback to generate initial guess
file_paths = (os.path.join(get_files_path(), "DoublePendulum.mo"),
os.path.join(get_files_path(), "DoublePendulum.mop"))
comp_opts = {'inline_functions': 'all', 'dynamic_states': False,
'expose_temp_vars_in_fmu': True, 'equation_sorting': True, 'automatic_tearing': True}
init_fmu = load_fmu(compile_fmu("DoublePendulum.Feedback", file_paths, compiler_options=comp_opts))
init_res = init_fmu.simulate(final_time=3., options={'CVode_options': {'rtol': 1e-10}})
# Set up optimization
op = transfer_optimization_problem('Opt', file_paths, compiler_options=comp_opts)
opts = op.optimize_options()
opts['IPOPT_options']['linear_solver'] = "ma27"
opts['n_e'] = 100
opts['init_traj'] = init_res
opts['nominal_traj'] = init_res
# Symbolic elimination
op = BLTOptimizationProblem(op)
# Solve optimization problem
res = op.optimize(options=opts)
# Extract solution
time = res['time']
phi1 = res['pendulum.revolute1.phi']
phi2 = res['pendulum.revolute2.phi']
u = res['u']
# Verify solution for testing purposes
try:
import casadi
except:
pass
else:
cost = float(res.solver.solver_object.output(casadi.NLP_SOLVER_F))
N.testing.assert_allclose(cost, 9.632883808252522, rtol=5e-3)
# Plot solution
if with_plots:
plt.close(1)
plt.figure(1)
plt.subplot(2, 1, 1)
plt.plot(time, phi1, 'b')
plt.plot(time, phi2, 'r')
plt.legend(['$\phi_1$', '$\phi_2$'])
plt.ylabel('$\phi$')
plt.xlabel('$t$')
plt.grid()
plt.subplot(2, 1, 2)
plt.plot(time, u)
plt.ylabel('$u$')
plt.xlabel('$t$')
plt.grid()
plt.show()