Ejemplo n.º 1
0
def set_velocity(vehicle, x_velocity=0, y_velocity=0, duration=0):
    '''Sets the velocity of the vehicle RELATIVE TO HEADING'''
    x_pid = PID(P, I, D, setpoint=x_velocity * 133)
    x_pid.sample_time = 0.1
    y_pid = PID(P, I, D, setpoint=y_velocity * 133)
    y_pid.sample_time = 0.1
    for _ in range(0, duration * 10):
        # compute new ouput from the PID according to the systems current value
        xcontrol = x_pid(X_VELOCITY)
        ycontrol = y_pid(Y_VELOCITY)
        set_attitude(vehicle,
                     pitch_angle=-1 * xcontrol,
                     roll_angle=ycontrol,
                     duration=.1)
Ejemplo n.º 2
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    def run(self):
        dt = 0.05
        kp = 0.8
        ki = 2.5
        kd = 0.01
        pid_left = PID(kp, ki, kd, setpoint=0)
        pid_right = PID(kp, ki, kd, setpoint=0)
        pid_left.sample_time = dt
        pid_right.sample_time = dt

        while threadRun:
            last_leftDistance = leftDistance
            last_rightDistance = rightDistance
            time.sleep(dt)
            if leftDistance == 0:
                delta_leftDistance = 0
            else:
                delta_leftDistance = leftDistance - last_leftDistance
            if rightDistance == 0:
                delta_rightDistance = 0
            else:
                delta_rightDistance = rightDistance - last_rightDistance
            cur_leftSpeed = delta_leftDistance / (23 * dt)
            cur_rightSpeed = delta_rightDistance / (23 * dt)
            left_err = abs(cur_leftSpeed) - abs(leftSpeed)
            right_err = abs(cur_rightSpeed) - abs(rightSpeed)
            pid_left.output_limits = (-abs(leftSpeed), 100 - abs(leftSpeed))
            pid_right.output_limits = (-abs(rightSpeed), 100 - abs(rightSpeed))
            left_fix = pid_left(left_err)
            right_fix = pid_right(right_err)

            if leftSpeed == 0:
                leftR.stop()
                leftF.stop()
            elif leftSpeed > 0:
                leftR.stop()
                leftF.start(leftSpeed + left_fix)
            else:
                leftF.stop()
                leftR.start(-leftSpeed + left_fix)

            if rightSpeed == 0:
                rightR.stop()
                rightF.stop()
            elif rightSpeed > 0:
                rightR.stop()
                rightF.start(rightSpeed + right_fix)
            else:
                rightF.stop()
                rightR.start(-rightSpeed + right_fix)
Ejemplo n.º 3
0
def timer_callback(event):
    global started, started1, pub, encoderValue, PWM_Output, desired_Position, current_wheel_distance, current_angle

    if (started1):
        if (started):

            previouswheeldistance = current_wheel_distance
            pid = PID(100, 0.5, 1, setpoint=desired_Position, auto_mode=True)
            pid.output_limits = (-255, 255)
            pid.sample_time = 0.001
            PWM_Output = pid(previouswheeldistance)
            current_wheel_distance = (encoderValue * 2 * pi *
                                      r) / (PPR * gearRatio * decodeNumber)

            #previous_angle=current_angle
            #pid = PID(0.022,0.01,2,setpoint=desired_Position)
            #pid.output_limits = (-255, 255)
            #pid.sample_time = 0.001
            #PWM_Output = pid(previous_angle)

            #if( 0 < PWM_Output <= 13):
            #    PWM_Output = PWM_Output + 11.5
            #elif (-13 <= PWM_Output < 0):
            #    PWM_Output = PWM_Output - 11.5
            #
            #current_angle = encoderValue/24

            pub.publish(PWM_Output)

            print "Publishing PWM Values", PWM_Output
            print "Current Wheel distance", current_wheel_distance
Ejemplo n.º 4
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def pid_init(q): # this is going to be either the main.py file or its own.
  
  pid = PID(1,1,1) #init PID object with P, I and D parameters
  pid.sample_time = .1 #how often the pid creates an output
  while True: #pid loop
    state = q.get() #get the current data for run and setpoint
    if state.run:
      pid.setpoint = state.setpoint() #set the setpoint based on GUI
      
      current_temp = get_temp()
      #do the serial read shit based on number of thermocouples, and 


      #current_temp = [1,1,1,1,1,1,1,1,1,1,1,1,1] #full array of TC values
      state.temp = current_temp #update state variable
      state.time_pid = time.time() #update time when this was taken
      if state.controllocation: #if we are pulling data from top plate or substrate
          
          output = pid(stat.mean(state.temp[6:1])) #get the PID output where 1:4 is a placeholder for the state varible controlling what TC are controlling the temp
      else:
          output = pid(stat.mean(state.temp[0:3]))
    else: #if run=false
      output = 0 #no input to SCR
      
    #do gpio pwm shit to the low pass filter to control the power
    state.power = output #return what the SCR should be getting
    gpio_pwm(output)

    q.put(state) #update temperature and state variables
    q.task_done() #not sure what .task_done is. part of queue lib.

    time.sleep(pid.sample_time) # slow down the PID loop
Ejemplo n.º 5
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    def run(self):
        global leftSpeed
        global rightSpeed
        global dx
        global curPos
        global curPos_d
        dt = 0.1
        pid_straight = PID(0.5, 0.5, 0.04, setpoint=0)
        pid_straight.sample_time = dt
        flag = False

        while threadRun:
            if straight and leftSpeed != 0 and rightSpeed != 0:
                if flag == False:
                    pid_straight.set_auto_mode = True
                    flag = True
                err = (abs(leftDistance) - abs(rightDistance)) * PULSE_LENGTH
                pid_straight.output_limits = (-speed / 2, speed / 2)
                fix = pid_straight(err)
                #print(leftDistance, rightDistance, fix)
                if leftSpeed > 0:
                    leftSpeed = speed + fix
                elif leftSpeed < 0:
                    leftSpeed = -speed - fix

                if rightSpeed > 0:
                    rightSpeed = speed - fix
                elif rightSpeed < 0:
                    rightSpeed = -speed + fix
            else:
                if flag == True:
                    pid_straight.set_auto_mode = False
                    flag = False

            time.sleep(dt)
Ejemplo n.º 6
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    def set_position(self):
        '''Uses PID and position guesses to set the quad's position'''
        assert self.target_position is not None

        #set attitude to 0
        self.set_attitude(yaw_angle=0, duration=5)
        while True:
            print("Targeting", self.target_position)
            targ = []
            targ = self.target_position
            xpid = PID(self.configs.pos.P,
                       self.configs.pos.I,
                       self.configs.pos.D,
                       setpoint=targ[0])
            xpid.sample_time = 0.33
            ypid = PID(self.configs.pos.P,
                       self.configs.pos.I,
                       self.configs.pos.D,
                       setpoint=targ[1])
            ypid.sample_time = 0.33
            till_stop = 15
            while True:
                if targ != self.target_position:
                    #if dest changes rest PID algs
                    break
                if till_stop == 0:
                    self.reached_dest = True
                #Get control from each PID
                x_control = xpid(self.position_guess[0])
                y_control = ypid(self.position_guess[1])
                remaining_x = targ[0] - self.position_guess[0]
                remaining_y = targ[1] - self.position_guess[1]
                remaining_dst_sq = (remaining_x**2 + remaining_y**2)**.5
                if remaining_dst_sq < 20:
                    till_stop -= 1
                else:
                    till_stop = 15
                #Correct for tilts higher than total_tilt
                total_control_sq = (y_control**2 + x_control**2)**.5
                if total_control_sq > self.total_tilt:
                    x_control = self.total_tilt * remaining_x / remaining_dst_sq
                    y_control = self.total_tilt * remaining_y / remaining_dst_sq

                self.set_attitude(roll_angle=x_control, \
                            pitch_angle=y_control, \
                            duration=.33, \
                            yaw_angle=0)
Ejemplo n.º 7
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def controller(position):
    if len(position.data) == 1:
        #linear = 0
        control.data = [999, 0]
        print("No QR-code")

    else:

        distance = position.data[0]
        angle = position.data[1]

        pid_linear = PID(-0.5, -1, -0.05, setpoint=distance)
        pid_linear.output_limits = (-15, 45)

        pid_angular = PID(1.5, 2, 0.01, setpoint=angle)
        pid_angular.output_limits = (-25, 25)

        pid_linear.setpoint = SETPOINT  #distance in mm
        pid_angular.setpoint = 0  # zero angle needed

        #if current_time - start_time > 0.5:
        #start_time = time.time()
        #last_time = start_time

        pid_linear.sample_time = 0.01  # update every 0.001 seconds
        pid_angular.sample_time = 0.01  # update every 0.001 seconds

        linear = pid_linear(distance)

        if linear > 0:
            linear += 15
        elif linear < 0:
            linear -= 15

        angular = pid_angular(angle)

        if angular > 0:
            angular += 5
        elif angular < 0:
            angular -= 5

        control.data = [int(linear),
                        int(angular)]  # final package for publishing
        print(int(linear), int(angular))

    pub.publish(control)
def get_pid():
    print "pid is set"
    pid = PID(0.001, 0.0000005, 0.0000005,setpoint=0.0)
    pid.setpoint = 0.0
    pid.sample_time = 0.01
    pid.auto_mode = True
    pid.output_limits = (-0.7, 0.7)
    pid.proportional_on_measurement  =  True
    return pid
Ejemplo n.º 9
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def AutoTunning(kp, ki, kd, Input, mitad):
    #Auto-Tunning
    pid = PID(kp, ki, kd, setpoint=mitad)
    #pid.output_limits = (0, vel + 15)
    pid.sample_time = 0.01

    #computa nuevo pid
    control = pid(Input)
    kp, ki, kd = pid.components
    print(kp, ki, kd)
    return kp, ki, kd
Ejemplo n.º 10
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def pid_init(
        q, data_q):  # this is going to be either the main.py file or its own.

    pid = PID(3000, 0, 0)  #init PID object with P, I and D parameters
    pid.sample_time = .1  #how often the pid creates an output
    pid.output_limits = (0, 65535)
    data_state = data_state_class()
    output = 0
    pwm_object = gpio_pwm(0)
    counter = 0
    max_var = 0
    while True:  #pid loop

        if not q.empty():
            control_state = q.get(
                block=True,
                timeout=1)  #get the current data for run and setpoint

        #print("in pid while before data_state run",data_state.temp)

        if control_state.run:
            pid.setpoint = control_state.setpoint  #set the setpoint based on GUI

            current_temp_tup = get_temp(output, pwm_object, max_var, counter)
            counter = counter + 1
            #do the serial read shit based on number of thermocouples, and
            current_temp = current_temp_tup[0]
            pwm_object = current_temp_tup[1]
            max_var = current_temp_tup[2]
            #current_temp = [1,1,1,1,1,1,1,1,1,1,1,1,1] #full array of TC values
            data_state.temp = current_temp  #update data_state variable
            data_state.time = time.time()  #update time when this was taken
            if control_state.controllocation:  #if we are pulling data from top plate or substrate

                output = pid(
                    stat.mean(data_state.temp[6:11])
                )  #get the PID output where 1:4 is a placeholder for the data_state varible controlling what TC are controlling the temp
            else:
                output = pid(stat.mean(data_state.temp[0:1]))
        else:  #if run=false
            output = 0  #no input to SCR

        #do gpio pwm shit to the low pass filter to control the power
        data_state.power = output  #return what the SCR should be getting
        #print("output in pid" ,output)
        pwm_object.duty_cycle = output
        print(pwm_object.duty_cycle)
        #     print("temp",data_state.temp)

        data_q.put(data_state)  #update temperature and data_state variables
        #q.taskdone() #not sure what .task_done is. part of queue lib.

        time.sleep(pid.sample_time)  # slow down the PID loop
Ejemplo n.º 11
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def PIDcorona(y0,nat,mort,beta,gamma,dSM,dM,dZ,dHI,dHD,sm,m,z,h,mh,T0,tN,simtime,ICU,n_samples,g,K,Ki,Kd):
    pid = PID(K, Ki, Kd, setpoint=1900)
    # define controller
    pid.sample_time = 1 # update every day
    pid.output_limits = (0.02, 0.244)
    # calculate new beta
    beta = pid(y0[5])    
    # run model for one timestep
    simtime = 1
    tN = 2             
    y=runSimulation(y0,nat,mort,beta,gamma,dSM,dM,dZ,dHI,dHD,sm,m,z,h,mh,T0,tN,simtime,ICU,n_samples,g)
    #print(y0[5],y[5])
    return(beta,y)
Ejemplo n.º 12
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def pid_process(output, p, i, d, objCoord, centerCoord):
    ##    # signal trap to handle keyboard interrupt
    ##    signal.signal(signal.SIGINT, signal_handler)

    # create a PID and initialize it
    pid = PID(p.value, i.value, d.value, setpoint=centerCoord.value)
    pid.sample_time = 2.0
    pid.auto_mode = True
    ##    p.initialize()

    # loop indefinitely
    while True:
        output.value = pid(objCoord.value)
Ejemplo n.º 13
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def run_pid(cont_name,interval=1):
	starttime=time.time()
	time.sleep(interval - ((time.time() - starttime) % (interval) ) )

	this_pid=PID(2,0.05,0.0001,setpoint=mu,output_limits=(-50,200))
	this_pid.sample_time=pid_interval		

	logger.info("started  PID for {}".format(cont_name) )

	while not exited:
		try:
			# state = returnMetric(cont_name=cont_name,metric_name='delay')		
			state =os.popen("cat {}.delays | tail -1".format( os.path.join(PROJECT_HOME,DIRECTORY,cont_name)) ).read().strip()
			# logger.info('Delay for {} = {}'.format(cont_name,state) )
			if not len(state)>0:
				continue						 
			state= float(state)	
		except:
			continue			

		try:
			cont_delays[cont_name].append(state);
			cont_delays[cont_name].pop(0)

			# AVERAGING DISABLED TO MAKE PID MORE REACTIVE
			# state= np.mean(cont_delays[cont_name])
			
			state = (state-mu)/sdev
			pid_op = this_pid(this_pid.setpoint-state)

			sigm = sigmoid(pid_op)

			# window of last five PID outputs:
			action[cont_name].append(sigm)
			action[cont_name].pop(0)

			# check if current container is suffering
			if sum(action[cont_name])>=490:				
				others_fine = resolve(cont_name)				
				if others_fine:
					challenges[cont_name]=0

			if challenges[cont_name]==3:								
			 	# DECIDE BEST HOST -> MIGRATE
				#requests.get('http://10.5.20.124:1234/GM/Migrate_apache/{}'.format(cont_name),proxies={'http':None}).text
				logger.info("Migrate called for {}".format(cont_name))

		except:
			logger.exception("PID Error : {}".format(cont_name) )			
		time.sleep(interval - ((time.time() - starttime) % interval))	
Ejemplo n.º 14
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def AutoLand():
    #ultrasonic.distance() returns distance in cm. 11cm is height from ground. 12 should be good then to drop
    LandPID = PID(-0.5, 0.1, 0.05, setpoint=12)
    LandPID.sample_time = 0.01
    pid.output_limits = (300, 325)  # output value will be between 0 and 10
    #Current distance away
    distance = ultrasonic.distance()
    while distance > 12:
        control = LandPID(distance)
        #Change throttle - control needs to be between 240-420
        talktopi(ZERO_VALUE, ZERO_VALUE, control, ZERO_VALUE)
        #update distance
        distance = ultrasonic.distance()
    #Turn off motors
    talktopi(ZERO_VALUE, ZERO_VALUE, MIN_VALUE, ZERO_VALUE)
    time.sleep(1)
Ejemplo n.º 15
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def main():
    global quit, out, control, err
    fourcc = cv2.VideoWriter_fourcc(*'XVID')
    out = cv2.VideoWriter('.\CV_DS\debug_1.avi', fourcc, fps, frame_size)
    keyboard.on_press_key("1", toggle_quit, suppress=True)
    pid = PID(1, 0.1, 0.05, setpoint=1)
    pid.sample_time = 1
    print("Press 1 to start")
    while quit:
        sleep(1)
    print("Press 1 to quit")
    while not quit:
        frame = np.array(ImageGrab.grab())
        err = get_err(frame)
        control = pid(err)
        update(control, err)
    cv2.destroyAllWindows()
    keyboard.unhook_all()
    out.release()
def pid_testing(max_time=60,
                p=0.01,
                i=0.01,
                d=0.001,
                setpoint=40,
                plotting=True):

    time, temp_rb, volt_out = [], [], []

    pid = PID(p, i, d, setpoint=setpoint)
    pid.sample_time = 0.01
    pid.output_limits = (0, 3.5)

    RE(bps.mv(volt_override, 0))
    RE(bps.mv(heater_enable2, 1))
    RE(bps.mv(heater_override2, 1))
    time_start = ttime.time()
    while True:
        current_value = temp2.value
        output = pid(current_value)
        time.append(ttime.time() - time_start)
        temp_rb.append(current_value)
        volt_out.append(output)
        RE(bps.mv(volt_override, output))

        if ttime.time() - time_start > max_time:
            break
        # ttime.sleep(0.1)

    RE(bps.mv(volt_override, 0))
    RE(bps.mv(heater_enable2, 0))
    RE(bps.mv(heater_override2, 0))
    if plotting:
        fig, ax = plt.subplots(1)
        ax2 = ax.twinx()
        ax.plot(time, temp_rb, 'r.-')
        ax2.plot(time, volt_out, 'k.-')
        ax.hlines(setpoint, time[0], time[-1], colors='g')

    return np.array(time[::5]), np.array(temp_rb[::5]), np.array(volt_out[::5])
def pid_ramping(t_ramp=3 * 60,
                T=400,
                max_time=5 * 60,
                p=0.01,
                i=0.01,
                d=0.001):
    time, temp_rb, volt_out = [], [], []
    T_init = temp2.value
    pid = PID(p, i, d, setpoint=T_init)
    pid.sample_time = 0.01
    pid.output_limits = (0, 3.5)

    RE(bps.mv(volt_override, 0))
    RE(bps.mv(heater_enable2, 1))
    RE(bps.mv(heater_override2, 1))
    time_start = ttime.time()
    ramp_rate = (T - T_init) / t_ramp
    while True:
        dt = ttime.time() - time_start
        if dt < t_ramp:
            pid.setpoint = ramp_rate * dt + T_init
        else:
            pid.setpoint = T
        print(pid.setpoint)
        current_value = temp2.value
        output = pid(current_value)
        time.append(dt)
        temp_rb.append(current_value)
        volt_out.append(output)
        RE(bps.mv(volt_override, output))

        if dt > max_time:
            break
        # ttime.sleep(0.1)

    RE(bps.mv(volt_override, 0))
    RE(bps.mv(heater_enable2, 0))
    RE(bps.mv(heater_override2, 0))
Ejemplo n.º 18
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ku = 1100
tu = 5.2

[kp, ki, kd] = tune_gain(ku, tu, "noovershoot")

pid_pan = PID(kp, ki - 30, kd - 200)
# pid_tilt = PID(100, 0, 0, setpoint=0)

v_pan = position[0] * 180 / np.pi
# v_tilt = position[1]*180/np.pi

pid_pan.output_limits = (-11448, 11448)
# pid_tilt.output_limits = (-30, 90)

# rate = rospy.Rate(50) # 50hz
pid_pan.sample_time = 0.02
# pid_tilt.sample_time = 0.02
counter = 0
while not rospy.is_shutdown():
    if counter < len(y):
        ref = y[counter]
        counter += 1
    error = ref - v_pan
    # print("Error: ", error)
    if abs(error) < 3:
        v_pan = ref

    pid_pan.setpoint = ref
    control_pan = pid_pan(v_pan)

    # print("Control: ", control_pan)
def marker_hover(vehicle, marker_tracker, rs=None):

    pid_x = PID(1, 0, 0, setpoint=0)
    pid_y = PID(1, 0, 0, setpoint=0)
    pid_z = PID(1, 0, 0, setpoint=-0.5)

    pid_x.sample_time = 0.01
    pid_y.sample_time = 0.01
    pid_z.sample_time = 0.01

    # Hover until manual override
    pose_queue = np.zeros((RUNNING_AVG_LENGTH, 3), dtype=float)
    count = 0

    if args["debug"] > 0:
        vehicle_pose_file = file_utils.open_file(VEHICLE_POSE_FILE)

    start_time = time.time()
    print("Tracking marker...")
    while True:
        # while vehicle.mode == VehicleMode("GUIDED"):

        # Track marker
        marker_tracker.track_marker(
            alt=vehicle.location.global_relative_frame.alt)

        if marker_tracker.is_marker_found():

            marker_pose = marker_tracker.get_pose()

            # Transform pose to UAV body frame; proportional gain
            marker_pose_body_ref = marker_ref_to_body_ref(marker_pose)

            # Pid response, input is UAV rel. to marker
            control_pose = np.array([[
                pid_x(-marker_pose_body_ref[0]),
                pid_y(-marker_pose_body_ref[1]),
                pid_z(-marker_pose_body_ref[2])
            ]])

            # Keep a queue of recent marker poses
            pose_queue[count % len(pose_queue)] = control_pose
            count += 1

            if count < RUNNING_AVG_LENGTH - 1:
                pose_avg = np.sum(pose_queue, axis=0) / count
            else:
                pose_avg = np.average(pose_queue, axis=0)

            # Send position command to the vehicle
            dronekit_utils.goto_position_target_body_offset_ned(
                vehicle,
                forward=pose_avg[0],
                right=pose_avg[1],
                down=-HOVER_ALTITUDE - pose_avg[2])

            if args["debug"] > 0 and rs is not None:
                data = rs.read()
                rs_pose = tf.quaternion_matrix([
                    data.rotation.w, data.rotation.x, data.rotation.y,
                    data.rotation.z
                ])

                rs_pose[0][3] = data.translation.x
                rs_pose[1][3] = data.translation.y
                rs_pose[2][3] = data.translation.z
                vehicle_pose = realsense_localization.rs_to_body(rs_pose)
                vehicle_trans = np.array(
                    tf.translation_from_matrix(vehicle_pose))

                vehicle_pose_file.write("{} {} {} {} 0 0 0 0\n".format(
                    time.time() - start_time, vehicle_trans[0],
                    vehicle_trans[1], vehicle_trans[2]))

            if args["debug"] > 2:
                print("Nav command: {} {} {}".format(pose_avg[0], pose_avg[1],
                                                     pose_avg[2]))

        # Maintain frequency of sending commands
        marker_tracker.wait()
Ejemplo n.º 20
0
def reflow_app():
    global oven_state
    global temp_0
    global temp_0_rate
    global Button_Start_pressed
    global command_transfer
    global cycle_started
    timer1 = time.time()

    speed = 1850

    #Controls temperature rate.
    #######################################
    pid_rate1 = PID(3, 0.01, 0.1, setpoint=1)
    pid_rate1.output_limits = (-5, 5)
    pid_rate1.proportional_on_measurement = False
    pid_rate1_F = 100
    pid_rate1_max = 0
    pid_rate1_min = 730
    #######################################
    #Controls the actual temperature of soaking time
    pid_temp1 = PID(.5, 0.01, 0.2, setpoint=140)
    pid_temp1.output_limits = (-2, .5)
    pid_temp1.proportional_on_measurement = False
    pid_temp1_F = 100
    timer_soak = time.time()  #30-90 seconds 30-120 acceptable
    #######################################
    #Controls the actual temperature of soaking time
    pid_rate2 = PID(1.3, 0.02, 0.2, setpoint=.6)
    pid_rate2.output_limits = (-5, 5)
    pid_rate2.proportional_on_measurement = False
    pid_rate2_F = 100
    timer_dripping = time.time()  #30-90 seconds 30-120 acceptable
    #######################################
    #Timestamps
    TimeAboveLiquidus = .07  #Also used to time the reflow 45-60 seconds
    Soak_last_pos = 0

    pid_dt = time.time()

    QThread.msleep(3000)
    application.ui.label_test.setText(f"State: 0. Ready.")

    while 1:
        #First wait for the start button
        #Then start the sequence
        #either use the preheat zone and prewarm to 100
        #Then go to the critical zone (my cabezone)
        #When there use the
        QThread.msleep(50)
        pid_dt = time.time() - timer1
        if (time.time() - timer1) > 1000 / 1000:
            timer1 = time.time()
            #print(timer1)
            temp = temp_0

            #application.ui.label_test.setText(f"State: {oven_state}")

            ###########################################################
            if oven_state == 0:
                ###########################################################
                application.ui.label_test.setText(f"State: 0. Ready.")

                if Button_Start_pressed == 1:
                    Button_Start_pressed = 0
                    reinit_graph()
                    new_position = application.ui.spinBox_preheat.value()
                    print(
                        f"Oven program started, Position preheat: {new_position} Speed {speed}"
                    )
                    print(
                        str.encode('G1X' + str(new_position) + 'F' +
                                   str(speed) + '\n'))
                    command_transfer = 'G1X' + str(new_position) + 'F' + str(
                        speed) + '\n'
                    application.ui.label_test.setText(f"State: 1 : Preheating")
                    oven_state = 1
                    global cycle_started
                    cycle_started = True
            ###########################################################
            elif oven_state == 1:  #Preheat
                ###########################################################
                application.ui.label_test.setText(
                    f"State: 1 : Preheating: {(60-temp):,.2f}")

                if temp > 60:
                    oven_state = 2
                    new_position = application.ui.spinBox_critical.value()
                    print(
                        f"Moving to critical point: {new_position} Speed {speed}"
                    )
                    print(
                        str.encode('G1X' + str(new_position) + 'F' +
                                   str(speed) + '\n'))
                    command_transfer = 'G1X' + str(new_position) + 'F' + str(
                        speed) + '\n'
            ###########################################################

            elif oven_state == 2:  #Waiting to arrive to critical zone
                ###########################################################
                new_position = application.ui.spinBox_critical.value()
                application.ui.label_test.setText(
                    f"State: 2 : Moving to Critical {(new_position-position):,.2f}mm"
                )
                if position >= new_position - 2:  #waiting until we arrive to new location..
                    oven_state = 3
                    print("Arrived to Critical point")
                    application.ui.label_test.setText(f"State: 2 : Arrived!")
            ###########################################################
            elif oven_state == 3:  #Increasing temp to 135 at 1C/s (to SoakZone)
                ###########################################################
                #warming from Preheat to Soaking between 140-150C, 130-170C Acceptable.
                #Here we will use a PID loop jog to the desired value (130C) at rate <2C/s
                #After the that is achieve we will just to the next loop.
                """Add PID loop here"""
                pid_rate1.sample_time = pid_dt
                output = pid_rate1(
                    temp_0_rate
                )  #<-----------------------------------------------
                command_transfer = 'G1X' + str(
                    int(position + output)) + 'F' + str(pid_rate1_F) + '\n'
                print("PID Rate 1 output:", output)
                application.ui.label_test.setText(
                    f"State: 3 : Heating to soaking T-0= {(130-temp):,.2f} PID {output:,.2f}"
                )
                Soak_last_pos = position + output
                if temp > 130:
                    oven_state = 4
                    print("Temp of 130 reached")
                    timer_soak = time.time()
                    application.ui.label_test.setText(
                        f"State: 3 : Arrived to SoakZone!")
                    pid_temp1.set_auto_mode(True, last_output=0)
            ###########################################################
            elif oven_state == 4:  #Soaking stage. 45-60s Recommended. 30-100s Acceptable
                ###########################################################
                #Here the setpoing is changed to maintain the temp between 140-150 using PWM value
                #When the timer is done
                """Cascade PID loop"""
                pid_temp1.sample_time = pid_dt
                output = pid_temp1(
                    temp_0)  #<-----------------------------------------------

                pid_rate1.setpoint = output
                pid_rate1.sample_time = pid_dt
                output2 = pid_rate1(
                    temp_0_rate
                )  #<-----------------------------------------------
                if position + output2 > 730:
                    command_transfer = 'G1X' + str(
                        int(position +
                            output2)) + 'F' + str(pid_rate1_F) + '\n'

                #command_transfer = 'G1X'+str(int(position+output))+'F'+str(pid_temp1_F)+'\n'
                #print(f"PID Temp 1 {output:,.2f}, T-0 = {(time.time() - timer_soak):,.2f}")
                application.ui.label_test.setText(
                    f"State: 4 : Soaking: t-0 = {45-(time.time() - timer_soak):,.2f} PID{output:,.2f}->{output2:,.2f}"
                )

                if time.time() - timer_soak > 45:  #45 seconds?
                    oven_state = 5
                    application.ui.label_test.setText(f"State: 4 : Timeout!")
                    command_transfer = 'G1X' + str(Soak_last_pos) + 'F' + str(
                        pid_rate1_F) + '\n'
            ###########################################################
            elif oven_state == 5:  #Here we slowly move the car at rate of .5-1Cs recommend up to 2.4C/s is acceptable.
                ###########################################################
                """Add PID loop here"""
                pid_rate2.sample_time = pid_dt
                output = pid_rate2(
                    temp_0_rate
                )  #<-----------------------------------------------
                command_transfer = 'G1X' + str(
                    int(position + output)) + 'F' + str(pid_rate2_F) + '\n'
                print("PID Rate 2 output:", output)
                application.ui.label_test.setText(
                    f"State: 5 : Heating to Peak t-0= {(210-temp):,.2f} PID {output:,.2f}"
                )

                if temp >= 183:
                    if TimeAboveLiquidus == .07:  #just to know we haven't been here
                        TimeAboveLiquidus = time.time()
                        print("###Warning above liquidus temp!###")
                        pid_rate2.setpoint = 1.2
                        pid_rate2.Ki = .1

                if temp > 210:
                    oven_state = 6
                    application.ui.label_test.setText(f"State: 5 : Done!")
                    new_position = application.ui.spinBox_maxTravel.value()
                    print(
                        str.encode('G1X' + str(new_position) + 'F' +
                                   str(speed) + '\n'))
                    command_transfer = 'G1X' + str(new_position) + 'F' + str(
                        speed) + '\n'
                    #maybe stop the car just in case
            ###########################################################
            elif oven_state == 6:  #here we just move the car to the reflow position and wait.
                ###########################################################
                #We wait around 30-60 seconds...
                application.ui.label_test.setText(
                    f"State: 6 : reflowing t-0= {30-(time.time() - TimeAboveLiquidus):,.2f}"
                )

                if time.time() - TimeAboveLiquidus > 30:
                    oven_state = 7
                    new_position = application.ui.spinBox_dripping.value()
                    print(
                        str.encode('G1X' + str(new_position) + 'F' +
                                   str(speed) + '\n'))
                    command_transfer = 'G1X' + str(new_position) + 'F' + str(
                        speed) + '\n'
                    application.ui.label_test.setText(f"State: 7 : dripping")
                #send the command to the dripping position.
            ###########################################################
            elif oven_state == 7:  #Here we waiting until we arrive to the dripping
                ###########################################################
                new_position = application.ui.spinBox_dripping.value()
                #We wait around 30-60 seconds...
                application.ui.label_test.setText(
                    f"State: 7 : Waiting for drip... Moving?->{abs(position - new_position)}"
                )

                if abs(position - new_position
                       ) < 11:  #waiting until we arrive to new location..
                    oven_state = 3
                    print("Arrived to dripping")
                    application.ui.label_test.setText(
                        f"State: 7 : Arrived to dripping!")
                    oven_state = 8
                    timer_dripping = time.time()
            ###########################################################
            elif oven_state == 8:  #here we just move the car to the reflow position and wait.
                ###########################################################
                application.ui.label_test.setText(
                    f"State: 8 : Dripping t-O : {time.time() - timer_dripping:,.2f}"
                )
                #We wait around 15 seconds...
                if time.time() - timer_dripping > 25:
                    oven_state = 9
                    application.ui.label_test.setText(f"State: 8 : Timeout!")
                    new_position = application.ui.spinBox_coolDown.value()
                    command_transfer = 'G1X' + str(new_position) + 'F' + str(
                        speed) + '\n'
            ###########################################################
            elif oven_state == 9:  #Here we waint until it cools down to <80
                ###########################################################

                application.ui.label_test.setText(
                    f"State: 9 : Cooling down {(80-temp):,.2f}")
                if temp < 80:
                    application.ui.label_test.setText(
                        f"State: 9 : Cool down completed! DONE!")
                    oven_state = 0
                    cycle_started = False
                    new_position = application.ui.spinBox_home.value()
                    command_transfer = 'G1X' + str(new_position) + 'F' + str(
                        speed) + '\n'
                #we Finish save data whatever and send card to home.

        if close_everything == 1:
            return 0
                robot_heading_to_target -= math.radians(
                    360)  # something might be wrong here

        robot_distance_to_target = distance(robot_center_position,
                                            current_target_position)

        pid_left_right.tunings = (
            0.3, 0.001, 0.01
        )  # tuning depends on the robot configuration, vision delay, etc
        if math.fabs(robot_heading_to_target -
                     robot_heading) > math.radians(5):  # I-term anti windup
            pid_left_right.Ki = 0
        pid_left_right.output_limits = (
            -0.3, 0.3
        )  # tuning depends on the robot configuration, vision delay, etc
        pid_left_right.sample_time = 0.01  # update every 0.01 seconds
        pid_left_right.setpoint = robot_heading_to_target
        ch1 = pid_left_right(robot_heading) * 100 + 100  # steering

        pid_speed.tunings = (0.01, 0.0001, 0
                             )  # depends on the robot configuration
        if robot_distance_to_target > 5:  # I-term anti windup
            pid_speed.Ki = 0
        pid_speed.output_limits = (-0.3, 0.3
                                   )  # depends on the robot configuration
        pid_speed.sample_time = 0.01  # update every 0.01 seconds
        pid_speed.setpoint = 0

        if math.fabs(robot_heading_to_target - robot_heading) < math.radians(
                max_forward_heading
        ):  # don't drive forward until error in heading is less than max_forward_heading
Ejemplo n.º 22
0
def main():
    # Class define
    state = RobotState()
    parser = config.config()
    robot = serialCom()
    image_thread = vision.imageCapRS2()
    # Socket Conn
    conn = websocket.create_connection('ws://192.168.2.66:9090/')
    ws = Referee(conn)
    # Params
    distances = []
    teamColor = "magenta"
    basketxs = []
    finaldistance = 0
    throwing = False
    counter = 0
    temp_dist_centerX = 0
    middle_px = parser.get('Cam', 'Width') / 2
    # PID
    toBallSpeed = PID(0.015, 0.00001, 0, setpoint=460)  # P=0.4 oli varem
    toBallSpeed.output_limits = (15, 75)  # Motor limits
    toBallSpeed.sample_time = 0.01
    basketCenterSpeed = PID(0.06, 0.00001, 0.003,
                            setpoint=310)  # 0.1, 0.000001, 0.001
    basketCenterSpeed.output_limits = (-5, 5)  # Motor limits
    basketCenterSpeed.sample_time = 0.01

    while True:
        if ws.go:  # True
            teamColor = ws.basketColor
            frame = image_thread.getFrame()

            if state.current is STATE.EMPTYING:
                if robot.recive.ir == 1:
                    robot.setIr(1)
                    robot.startThrow(100)
                    robot.setServo(100)
                else:
                    if state.timer_ms_passed() > 0.5:
                        robot.setIr(0)
                        state.change_state(STATE.WAITING)
            elif state.current is STATE.WAITING:
                # waiting
                robot.setIr(0)
                robot.setServo(0)
                robot.stopThrow()
                state.change_state(STATE.FINDING_BALL)
                #
            elif state.current is STATE.FINDING_BALL:
                imageProcessing.detectLine(frame)
                ballCnts = imageProcessing.getContours(frame)
                if len(ballCnts) > 0:
                    ball_x, ball_y = imageProcessing.detectObj(frame, ballCnts)
                    if ball_y > 415 and 310 < ball_x < 330:  # 30 - 60 parser.get('Cam', 'Height') - 65
                        print('found ball')
                        state.change_state(STATE.PICKING_UP_BALL)
                    else:
                        speed = max(50 - int(ball_y / 5), 20)
                        robot.omniMovement(speed, middle_px, ball_x, ball_y)
                else:
                    robot.left(10)
                #
            elif state.current is STATE.PICKING_UP_BALL:
                # picking up ball
                robot.forward(10)
                if state.timer_seconds_passed() > 1:
                    robot.stopMoving()
                    robot.setIr(0)
                    robot.setServo(50)
                    if state.timer_seconds_passed() > 8:
                        robot.setServo(-100)  # eject
                        state.change_state(
                            STATE.FINDING_BALL)  # ball disappeared, restart
                    elif robot.recive.ir == 1:
                        state.change_state(STATE.FINDING_BASKET)
                        pass
                #
            elif state.current is STATE.FINDING_BASKET:
                # finding basket
                # to add if basket too close go back a little
                basketCnts = imageProcessing.getBasketContours(
                    frame, teamColor)
                if len(basketCnts) > 0:
                    target_x, target_y, w, h = imageProcessing.detectObj(
                        frame, basketCnts, False)

                    basketCenteX, basketY = target_x + w / 2, target_y + h
                    distance = imageProcessing.calc_distance(w)

                    if len(distances) > 5:
                        distances.pop(0)
                        distances.append(distance)
                        finaldistance = sum(distances) / len(distances)
                    else:
                        distances.append(distance)

                    dist_from_centerX = 320
                    if target_x > -1:
                        dist_from_centerX = middle_px - basketCenteX

                    basketxs.append(dist_from_centerX)
                    print("dist_from_centerX", dist_from_centerX)

                    if 0 < dist_from_centerX < 30:
                        if (int(dist_from_centerX) == int(temp_dist_centerX)
                            ) and (dist_from_centerX != 320):
                            counter += 1
                        else:
                            temp_dist_centerX = dist_from_centerX
                            counter = 0
                    else:
                        print(-basketCenterSpeed(basketCenteX))
                        robot.rotate(-basketCenterSpeed(basketCenteX))

                    if finaldistance > 130:
                        speed = max(50 - int(basketY / 5), 20)
                        robot.omniMovement(speed, middle_px, basketCenteX,
                                           basketY)
                    elif 0 < finaldistance < 60:
                        robot.reverse(10)
                    else:
                        if counter > 3 or state.timer_seconds_passed() > 15:
                            robot.stopMoving()
                            state.change_state(STATE.DRIVING_TO_BASKET)
                            counter = 0
                else:
                    robot.left(12)
                #
            elif state.current is STATE.DRIVING_TO_BASKET:
                # driving to basket
                if state.timer_ms_passed() > 0.5:
                    state.current = STATE.STARTING_THROWER
                #
            elif state.current is STATE.STARTING_THROWER:
                # starting thrower
                # 0.180854 ja 14.205 oli varem
                throwSpeed = -0.000161064 * finaldistance**2 + 0.181854 * finaldistance + 15.205
                robot.startThrow(throwSpeed)
                if state.timer_ms_passed() > 0.5:
                    state.change_state(STATE.THROWING_BALL)
                #
            elif state.current is STATE.THROWING_BALL:
                # throwing ball
                robot.setIr(1)
                if state.timer_seconds_passed() + state.timer_ms_passed(
                ) > 1.5:
                    robot.setIr(0)
                    robot.setServo(0)
                    robot.startThrow(0)
                    state.change_state(STATE.FINDING_BALL)
                #
            else:
                raise Exception(
                    f'State not implemented in main(): {state.current}')
            pass

            cv2.putText(frame, str(state.current), (10, 30),
                        cv2.FONT_HERSHEY_DUPLEX, 1, cv2.COLOR_YUV420sp2GRAY)
            cv2.imshow('Processed', frame)
            k = cv2.waitKey(1) & 0xFF
            if k == ord("q"):
                break
        else:
            robot.stopMoving()
            state.change_state(STATE.EMPTYING)

    image_thread.setStopped(False)
    robot.stopThrow()
    robot.setStopped(False)
    cv2.destroyAllWindows()
Ejemplo n.º 23
0
def goto(desPos, maxSpeed):
    global leftSpeed
    global rightSpeed
    global straight
    mem = straight
    straight = False
    global speed
    global arucoUpdate
    arucoUpdate = True
    #print(curPos)
    #print(desPos)
    pathList = path(curPos, desPos, initMap)
    if pathList == []:
        return False
    print("Path: ", pathList)
    for p in pathList:
        ac = path2actions(curPos, p)
        #direction = math.atan2(p[1] - curPos[1], p[0] - curPos[0])

        #        turnAngle = - errAngle(direction,curPos[2])*180/np.pi
        #        print("Turn 1: ", turnAngle)
        #print(direction*180/np.pi)
        #print(curPos[2]*180/np.pi)
        direction = ac[0]
        turn2Dir(direction)

        #distance = math.sqrt((desPos[1] - curPos[1])*(desPos[1] - curPos[1]) + (desPos[0] - curPos[0])*(desPos[0] - curPos[0]))
        distance = ac[1]
        dt = 0.1
        pid_straight = PID(1.2, 0.5, 0.04, setpoint=0)
        pid_straight.sample_time = dt

        speed = maxSpeed
        if distance > 0:
            forward()
        else:
            backward()
        curDistance = abs(distance)
        while 1:
            ds = curDistance
            curDistance = dis2Pos(curPos, p)

            ds = ds - curDistance
            if curDistance > 200:
                direction = math.atan2(p[1] - curPos[1], p[0] - curPos[0])
            if curDistance < 400:
                speed = 30
            #print(curDistance)

            #print(speed)
            # Keep direction by angle
            if straight == False and leftSpeed != 0 and rightSpeed != 0:
                if distance > 0:
                    err = -errAngle(direction, curPos[2]) * 180 / np.pi
                else:
                    err = errAngle(direction, curPos[2]) * 2
                pid_straight.output_limits = (-speed / 3, speed / 3)
                fix = pid_straight(err)
                #print(err,fix)
                #print(leftDistance, rightDistance, fix)
                if leftSpeed > 0:
                    leftSpeed = speed + fix
                elif leftSpeed < 0:
                    leftSpeed = -speed + fix

                if rightSpeed > 0:
                    rightSpeed = speed - fix
                elif rightSpeed < 0:
                    rightSpeed = -speed - fix
            print(curDistance, ds)
            if curDistance < 30 or (ds < 0 and curDistance < 300):
                stop()
                ss = 50
                if distance > 0:
                    leftR.start(ss)
                    leftF.stop()
                    rightF.stop()
                    rightR.start(ss)
                else:
                    leftF.start(ss)
                    leftR.stop()
                    rightR.stop()
                    rightF.start(ss)
                time.sleep(0.4)
                leftF.stop()
                leftR.stop()
                rightF.stop()
                rightR.stop()
                print("Last distance: ", dis2Pos(curPos, p))
                if curDistance > 30:
                    aa = path2actions(curPos, p)
                    turn2Dir(aa[0])
                    move(aa[1], 20)
                    #goto(p,30)
                break

            time.sleep(dt)
    # Last turn
    turn2Dir(desPos[2], True)
    print("After go: ", curPos)
    straight = mem
    return True
Ejemplo n.º 24
0
u_bias = u_ss

# create PID controller
# op = op_bias + Kc * e + Ki * ei + Kd * ed
#      with ei = error integral
#      with ed = error derivative
Kc = 1.0      # Controller gain
Ki = 1.0      # Controller integral parameter
Kd = 0.0      # Controller derivative parameter
pid = PID(Kc,Ki,Kd)
# lower and upper controller output limits
oplo = 250.0
ophi = 350.0
pid.output_limits = (oplo-u_bias,ophi-u_bias)
# PID sample time
pid.sample_time = 0.1

plt.figure(1)
plt.ion()
plt.show()

# timing functions
tm = np.zeros(101)
sleep_max = 0.101
start_time = time.time()
prev_time = start_time

# Simulate CSTR
for i in range(len(t)-1):
    # PID control
    pid.setpoint=sp[i]
Ejemplo n.º 25
0
Ydist = 0.17
Xdist = 0.25
height = 0.17
#body frame to foot frame vector
bodytoFeet0 = np.matrix([[Xdist / 2, -Ydist / 2, -height],
                         [Xdist / 2, Ydist / 2, -height],
                         [-Xdist / 2, -Ydist / 2, -height],
                         [-Xdist / 2, Ydist / 2, -height]])

orientation = np.array([0., 0., 0.])
deviation = np.array([0., 0., 0.])
lastTime = 0.

pidX = PID(-0.0005, 0.0, 0.000001, setpoint=0.)
pidY = PID(0.0005, 0., 0., setpoint=0.)
pidX.sample_time = 0.02  # update every 0.01 seconds
pidY.sample_time = 0.02

T = 0.5  #period of time (in seconds) of every step
offset = np.array([
    0.5, 0., 0., 0.5
])  #defines the offset between each foot step in this order (FR,FL,BR,BL)
while (True):
    startTime = time.time()
    pos, orn, L, angle, Lrot, T = pybulletDebug.cam_and_robotstates(boxId)

    L, angle, Lrot, T = joystick.read()

    #calculates the feet coord for gait, defining length of the step and direction (0º -> forward; 180º -> backward)
    bodytoFeet, s = trot.loop(L, angle, Lrot, T, offset, bodytoFeet0)
Ejemplo n.º 26
0
mode = 1180
tilt = 1500

#PID
P_pitch = 1.48
I_pitch = 28.0
D_pitch = 0.05

P_roll = 0.1
I_roll = 30.0
D_roll = 0.1

pid_pitch = PID(P_pitch, I_pitch, D_pitch, setpoint=0.0)
pid_roll = PID(P_roll, I_roll, D_roll, setpoint=0.0)

pid_pitch.sample_time = 0.01
pid_roll.sample_time = pid_pitch.sample_time

pid_pitch.auto_mode = True
pid_roll.auto_mode = True

pid_pitch.output_limits = (-100.0, 100.0)
pid_roll.output_limits = (-100.0, 100.0)


##############################################################################
#Thread functions
def ReadSerial():
    global mode, tilt
    data = []
    while 1:
Ejemplo n.º 27
0
GPIO.setmode(GPIO.BCM)
GPIO.setup(motor1, GPIO.OUT)
GPIO.setup(motor2, GPIO.OUT)
GPIO.setup(motorSpeed, GPIO.OUT)
GPIO.output(motor1, GPIO.LOW)
GPIO.output(motor2, GPIO.LOW)
speedControl=GPIO.PWM(motorSpeed,100)
speedControl.start(currentSpeed)

#Anemo setup
adc = Adafruit_ADS1x15.ADS1015()
GAIN = 2

#PID setup
pid = PID(1, 0.1, 0.05, setpoint=440)
pid.sample_time = 1
pid.output_limits = (30, 90)

#Switch Setup
switch1 = 17
GPIO.setup(switch1, GPIO.IN,GPIO.PUD_UP)



#exit
def exitProgram():
    GPIO.cleanup()
    print("EXIT")

atexit.register(exitProgram)
Ejemplo n.º 28
0
PWM_FREQ = 25  #change this if fan stutters or else behave strange
fanPin = 21  # The pin ID, edit here to change it
GPIO.setmode(GPIO.BCM)
GPIO.setup(fanPin, GPIO.OUT)
GPIO.setwarnings(False)
myPWM = GPIO.PWM(fanPin, PWM_FREQ)
myPWM.start(40)
pid = PID(-2, -0.8, -2)
pid.setpoint = 45
output = 0
pid.auto_mode = True

# assume we have a system we want to control in controlled_system

pid.sample_time = 0.5  # update every 0.01 seconds
pid.output_limits = (0, 100)  # output value will be between 0 and 10

while True:
    input_temp = float(getCPUtemperature())
    print(input_temp)
    # compute new output from the PID according to the systems current value
    output = int(pid(input_temp))

    # feed the PID output to the system and get its current value
    #v = getCPUtemperature().update(0)
    myPWM.ChangeDutyCycle(output)
    print(output)
    time.sleep(1)

#except KeyboardInterrupt: # trap a CTRL+C keyboard interrupt
            cf2 = CF(scf, available)
            cf2_psi = 0    # Get current yaw-angle of cf
            cf2_bat = cf2.vbat  # Get current battery level of cf
            cf2_blevel = cf2.blevel
            cf2_pwm = cf2.m1_pwm
            cf2_temp = cf2.temp
            cf2_phi = 0
            cf2_theta = 0
            marker_psi = 0  # Set marker angle to zero initially

            pid = PID(0, 0, 0, setpoint=marker_psi)  # Initialize PID
            pid_x = PID(0, 0, 0, setpoint=0)  # init PID for roll
            # Define pid parameters
            pid.tunings = (Kp_psi, Kd_psi, Ki_psi)
            pid_x.tunings = (Kp_x, Kd_x, Ki_x)
            pid_x.sample_time = 0.05    # update pid every 50 ms
            pid.output_limits = (-60, 60)
            pid_x.output_limits = (-20, 20)
            pid.proportional_on_measurment = False
            pid_x.proportional_on_measurment = False

            if cf2_bat >= low_battery:
                cf2.takeoff()    # CF takes off from ground
                print("Taking off ! Battery level: " + str(cf2_bat))
                time.sleep(1.5)   # Let the CF hover for 1.5s

            t_init = time.time()
            endTime = t_init + 30000   # Let the CF do its thing for some time

            # Add values to array for logging/plotting
            setpoint = np.append(setpoint, marker_psi)  # Commanded yaw
Ejemplo n.º 30
0
def searchBook(distance, maxSpeed, angle, ID=10):
    global leftSpeed
    global rightSpeed
    global straight
    global speed
    global arucoUpdate
    arucoUpdate = True
    ar = MyAruco()
    print("ar ok")
    time.sleep(1)
    dt = 0.1
    pid_straight = PID(4.5, 1.5, 0.4, setpoint=0)
    pid_straight.sample_time = dt
    mem = straight
    straight = False

    speed = maxSpeed
    if distance > 0:
        forward()
    else:
        backward()
    while 1:
        curDistance = max(abs(leftDistance), abs(rightDistance)) * PULSE_LENGTH
        #speed = dis2Speed(curDistance,abs(distance),maxSpeed)
        #print(speed)
        # Keep direction by angle
        if straight == False and leftSpeed != 0 and rightSpeed != 0:
            err = -errAngle(angle, curPos[2]) * 180 / np.pi
            #print(err)
            pid_straight.output_limits = (-speed / 3, speed / 3)
            fix = pid_straight(err)
            #print(err,fix)
            #print(leftDistance, rightDistance, fix)
            if leftSpeed > 0:
                leftSpeed = speed + fix
            elif leftSpeed < 0:
                leftSpeed = -speed + fix

            if rightSpeed > 0:
                rightSpeed = speed - fix
            elif rightSpeed < 0:
                rightSpeed = -speed - fix

        # Search book
        found, dis = ar.detectAndGetTargetDist(ID, 1)
        if found:
            speed = 10
            if dis > 0 and leftSpeed < 0:
                leftSpeed = speed
                rightSpeed = speed
            if dis < 0 and leftSpeed > 0:
                leftSpeed = -speed
                rightSpeed = -speed

            print(dis)

        if curDistance >= abs(distance) or (found and abs(dis) < 5):
            stop()
            ss = 100
            if distance > 0:
                leftR.start(ss)
                leftF.stop()
                rightF.stop()
                rightR.start(ss)
            else:
                leftF.start(ss)
                leftR.stop()
                rightR.stop()
                rightF.start(ss)
            time.sleep(0.4)
            leftF.stop()
            leftR.stop()
            rightF.stop()
            rightR.stop()
            if found:
                print("Found and grab the book")
                turn2Dir(desPos[2])
                found, dis = ar.detectAndGetTargetDist(ID, 1)
                print("Last D2Book: ", dis)
                while abs(dis) > 5:
                    move(dis, 20)
                    time.sleep(0.5)
                    found, dis = ar.detectAndGetTargetDist(ID, 1)
                    print("Last D2Book: ", dis)
                arucoUpdate = True
                print("Last D2Book: ", dis)
                getBook()
            else:
                print("Cannot find the book")
            break

        if not found:
            time.sleep(dt)
    del ar
    straight = mem