Msat = 1.35e5
# Eingangsgrößen
r = 2.0e-2 # m, Radius
i_hat = 20.0 # A, Strom
f = 1000.0 # Hz, Frequenz
n = 3 # Anzahl Perioden
n_p = 512 # Datenpunkte pro Periode
t = np.arange(n * n_p) / (n_p * f) # Zeitvektor
current = i_hat * (np.sin(2 * np.pi * f * t) +
0.7 * np.sin(6 * np.pi * f * t + 1)) # Stromvorgabe
H = current / (2 * np.pi * r) # Resultierende Feldvorgabe
graph = CGraph()
graph.trace_on()
x = Function([alpha, a, k, c, Msat])
# Parametervektor
p = {'alpha': x[0], 'a': x[1], 'k': x[2], 'c': x[3], 'm_sat': x[4]}
model = JilesAthertonModel.from_dict(p)
M = model.integrate_rk4(t, H)
H = H[::2]
t = t[::2]
B = mu_0 * (H + M)
dB_dt = np.zeros(np.size(B))
new = np.append([0.0], (B[1:] - B[0:-1]) / (t[1:] - t[0:-1]))
P = np.sum(0.5 * H * new)
from algopy import CGraph, Function
cg = CGraph()
cg.trace_on()
x = Function(1)
y = Function(3)
z = x * y + x
cg.trace_off()
cg.independentFunctionList = [x,y]
cg.dependentFunctionList = [z]
print cg
cg.plot('example_tracer_cgraph.png')
from algopy import CGraph, Function
cg = CGraph()
cg.trace_on()
x = Function(1)
y = Function(3)
z = x * y + x
cg.trace_off()
cg.independentFunctionList = [x, y]
cg.dependentFunctionList = [z]
print(cg)
cg.plot('example_tracer_cgraph.png')
