Visualisation de signaux triphasés à l'aide de différents types de représentations et pour différents types de commande.
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# -*- coding: utf-8 -*-
import numpy as np
import matplotlib as mpl
import matplotlib.pyplot as plt
from matplotlib.widgets import Slider, Button, CheckButtons
from matplotlib.axes import Axes
from matplotlib.projections.polar import PolarAxes
from mpl_toolkits.mplot3d.axes3d import Axes3D
from matplotlib.animation import FuncAnimation
PI = np.pi
N_PTS = 400
class TriPlot_TimeAxe(Axes):
"""Classe d'axe temporel"""
phase = 2*PI/3*np.array([0, 1, 2])
phasor = np.linspace(0-phase, 2*PI-phase, N_PTS).T
theta = phasor[0,:]
def __init__(self, v_max, phi, fig, rect, *args, **kwargs):
Axes.__init__(self, fig, rect, *args, **kwargs)
self.timegraph_plot = []
self.v_max = v_max
self.phi = phi
self.v_ref = np.zeros(self.phasor.shape)
self.parameters = {}
return
def setup(self):
self.get_figure().add_axes(self)
self.timegraph_plot = [self.plot(self.theta, self.v_ref[i])[0] for i in range(3)]
self.grid()
self.set_xlim([0, 2*PI])
self.set_xticks([i*PI/6 for i in range(13)])
self.set_xticklabels([str(30*i)+"°" for i in range(13)])
self.set_xlabel("Phase")
self.set_ylim([-1.6*self.v_max, +1.6*self.v_max])
self.set_ylabel("Tension [V]")
self.timegraph_plot.append(
self.plot([self.phi*PI/180, self.phi*PI/180],
self.get_ylim(),
'--r')[0]
)
self.timegraph_plot.append(
self.scatter(3*[self.phi*PI/180],
[self.v_max*np.cos((self.phi-i*120)*PI/180) for i in range(3)],
c=["C0", "C1", "C2"]))
self.timegraph_plot.append(
self.plot([0, 2*PI], 2*[self.v_max/np.sqrt(2)], c='C4', ls=':')[0]
)
self.timegraph_plot.append(
self.text(0, 0, r"$V_{eff}$", c="C4")
)
return
def refresh(self):
self.timegraph_plot[0].set_ydata(self.v_ref[0])
self.timegraph_plot[1].set_ydata(self.v_ref[1])
self.timegraph_plot[2].set_ydata(self.v_ref[2])
self.timegraph_plot[3].set_xdata(2*[self.phi*PI/180])
self.timegraph_plot[4].set_offsets(
np.array([3*[self.phi*PI/180],
[self.v_max*np.cos((self.phi-i*120)*PI/180) for i in range(3)]]
).T
)
self.timegraph_plot[5].set_ydata(2*[self.v_max/np.sqrt(2)])
self.timegraph_plot[5].set_visible(self.parameters["v_eff"])
self.timegraph_plot[6].set_position((23/12*PI, 10+self.v_max/np.sqrt(2)))
self.timegraph_plot[6].set_visible(self.parameters["v_eff"])
return
def set_vmax(self, v_max):
self.v_max = v_max
self.v_ref = self.v_max*np.cos(self.phasor)
return
def set_phi(self, phi):
self.phi = phi
return
def set_parameters(self, p):
self.parameters["v_eff"] = p.get("v_eff", False)
return
class TriPlot_VectAxe(PolarAxes):
"""Classe d'axe vectoriel"""
phase = 2*PI/3*np.array([0, 1, 2])
phasor = np.linspace(0-phase, 2*PI-phase, N_PTS).T
theta = phasor[0,:]
def __init__(self, v_max, phi, fig, rect, *args, **kwargs):
PolarAxes.__init__(self, fig, rect, *args, **kwargs)
self.plot_list = []
self.arrow_list = []
self.v_max = v_max
self.phi = phi
self.v_ref = np.zeros(self.phasor.shape)
self.parameters = {"projection": False}
return
def setup(self):
self.get_figure().add_axes(self)
self.set_rorigin(0)
self.set_ylim(0, 1.6*self.v_max)
theta_ticks = np.arange(0, 360, 30)
theta_labels = [str(t * (t<=180)
+ (t-360) * (t>180)) + "°"
for t in theta_ticks]
self.set_thetagrids(theta_ticks, labels=theta_labels)
self.plot_list.append(
self.plot(
self.theta, self.v_max*np.ones(self.theta.shape), 'r'
)[0]
)
for i in range(3):
self.plot_list.append(
self.plot(
[(self.phi-i*120)*PI/180,
PI*(1-np.sign(np.cos((self.phi-i*120)*PI/180)))],
[self.v_max,
self.v_max*np.abs(np.cos((self.phi-i*120)*PI/180))],
ls = ':',
visible=self.parameters["projection"]
)[0]
)
self.arrow_list = [
self.arrow(0, 0,
0, self.v_max,
lw=2, head_width=0.05, head_length=self.v_max/15,
color="C"+str(i), length_includes_head=True,
transform=(
mpl.transforms.Affine2D().translate(
(self.phi-i*120)*PI/180, 0
)
+ self.transData
)
)
for i in range(3)
] + [
self.arrow(0, 0,
0, self.v_max*np.abs(np.cos((self.phi-i*120)*PI/180)),
lw=1, head_width=0.05, head_length=self.v_max/15,
color="C"+str(i), length_includes_head=True,
transform=(
mpl.transforms.Affine2D().translate(
PI*(1-np.sign(
np.cos((self.phi-i*120)*PI/180)
)
)/2,
0
)
+ self.transData
),
visible=self.parameters["projection"]
)
for i in range(3)
]
self.plot_list.append(
self.plot(
self.theta, self.v_max/np.sqrt(2)*np.ones(self.theta.shape),
c='C4', ls=':', visible=self.parameters.get("v_eff", False)
)[0]
)
return
def refresh(self):
self.plot_list[0].set_ydata(
self.v_max*np.ones(
self.theta.shape
)
)
for i, plot in enumerate(self.plot_list[1:4]):
plot.set_visible(self.parameters.get("projection"))
plot.set_xdata(
[(self.phi-i*120)*PI/180,
PI*(1-np.sign(np.cos((self.phi-i*120)*PI/180)))/2]
)
plot.set_ydata(
[self.v_max,
self.v_max*np.abs(np.cos((self.phi-i*120)*PI/180))]
)
for i in range(3):
self.arrow_list[i].set_data(dy=self.v_max)
self.arrow_list[i].set_transform(
mpl.transforms.Affine2D().translate(
(self.phi-i*120)*PI/180, 0)
+ self.transData
)
for i in range(3, 6):
self.arrow_list[i].set_visible(self.parameters["projection"])
self.arrow_list[i].set_data(
dy=self.v_max*np.abs(np.cos((self.phi-i*120)*PI/180))
)
self.arrow_list[i].set_transform(
mpl.transforms.Affine2D().translate(
PI*(1-np.sign(np.cos((self.phi-i*120)*PI/180)))/2, 0)
+ self.transData
)
self.plot_list[4].set_ydata(self.v_max/np.sqrt(2)*np.ones(self.theta.shape))
self.plot_list[4].set_visible(self.parameters.get("v_eff", False))
return
def set_vmax(self, v_max):
self.v_max = v_max
self.v_ref = self.v_max*np.cos(self.phasor)
return
def set_phi(self, phi):
self.phi = phi
return
def set_parameters(self, p):
self.parameters["projection"] = p.get("projection", False)
self.parameters["v_eff"] = p.get("v_eff", False)
return
class TriPlot_3DAxe(Axes3D):
"""Classe d'axe 3D"""
phase = 2*PI/3*np.array([0, 1, 2])
phasor = np.linspace(0-phase, 2*PI-phase, N_PTS).T
theta = phasor[0,:]
def __init__(self, v_max, phi, fig, rect, *args, **kwargs):
Axes3D.__init__(self, fig, rect, auto_add_to_figure=False,
*args, **kwargs)
self.plot_list = []
self.arrow_list = []
self.v_max = v_max
self.phi = phi
self.v_re = np.zeros(self.phasor.shape)
self.v_im = np.zeros(self.phasor.shape)
return
def setup(self):
self.get_figure().add_axes(self)
for i in range(3):
self.plot_list.append(
self.plot(self.v_im[i,:], self.v_re[i,:],
self.theta
)[0]
)
self.set_xlim([-1.6*self.v_max, 1.6*self.v_max])
self.set_ylim([-1.6*self.v_max, 1.6*self.v_max])
self.view_init(vertical_axis='y')
self.set_zlim([0, 2*PI])
self.set_zticks([i*PI/2 for i in range(5)])
self.set_zticklabels([str(90*i)+"°" for i in range(5)])
#self.set_box_aspect((4,1,1))
self.set_facecolor("#00000000")
self.set_title("Visualisation 3D")
self.set_xlabel("Partie imaginaire")
self.set_ylabel("Partie réelle")
self.set_zlabel("Angle")
# Début de code pour un plan "phi" dans l'espace 3D
# matplotlib ne gère pas les transformations 3D...
# X = [-self.v_max, self.v_max]
# Y = [-self.v_max, self.v_max]
# XX, YY = np.meshgrid(X, Y)
# Z = np.zeros((2,2))
# self.plot_list.append(
# self.plot_surface(XX, YY, Z, color="#ff000080")
# )
# self.plot_list[-1].set_transform(
# np.array([[0, 0, 0, 0],
# [0, 0, 0, 0],
# [0, 0, 0, self.phi*PI/180],
# [0, 0, 0, 1]])
# )
return
def set_vmax(self, v_max):
self.v_max = v_max
self.v_re = self.v_max*np.cos(self.phasor)
self.v_im = self.v_max*np.sin(self.phasor)
return
def set_phi(self, phi):
self.phi = phi
return
def set_parameters(self, p):
return
def refresh(self):
for i, plot in enumerate(self.plot_list[:3]):
plot.set_data_3d(
self.v_re[i,:],
self.v_im[i,:],
self.theta
)
def projX(self, event=None):
self.view_init(0, -90.01, 'y')
self.get_figure().canvas.draw()
def projY(self, event=None):
self.view_init(89.99, -90.01, 'y')
self.get_figure().canvas.draw()
def projZ(self, event=None):
self.view_init(0, 90, 'x')
self.get_figure().canvas.draw()
return
class TriPlot:
"""Classe de graphique MLI"""
phase = 2*PI/3*np.array([0, 1, 2])
phasor = np.linspace(0-phase, 2*PI-phase, N_PTS).T
theta = phasor[0,:]
def __init__(self):
# Attributs scalaires
self.v_eff = 220
self.v_max = np.sqrt(2)*self.v_eff
self.v_ref = np.zeros(self.phasor.shape)
self.phi = 30
# Attributs graphiques
self.fig = plt.figure()
self.timeaxe = TriPlot_TimeAxe(self.v_max, self.phi,
self.fig, [0.1, 0.5, 0.4, 0.4])
self.vectaxe = TriPlot_VectAxe(self.v_max, self.phi,
self.fig, [0.5, 0.1, 0.4, 0.4])
self.axe3D = TriPlot_3DAxe(self.v_max, self.phi,
self.fig, [0.5, 0.6, 0.4, 0.4])
# -- Curseurs de réglage
self.amp_slider = Slider(
ax=plt.axes([0.01, 0.1, 0.03, 0.8]),
label="Tension\nefficace",
valmin=0,
valmax=1.5*self.v_eff,
valinit=self.v_eff,
orientation="vertical"
)
self.phi_slider = Slider(
ax=plt.axes([0.1, 0.01, 0.8, 0.03]),
label="Phase [°]",
valmin=0,
valmax=360,
valinit=self.phi,
orientation="horizontal"
)
# -- Bouton de remise à zéro
self.reset_button = Button(
ax=plt.axes([0.95, 0.01, 0.03, 0.03]),
label='Reset'
)
# -- Cases de cocher pour les parametres de visibilité
self.parameters_check = CheckButtons(
ax=plt.axes([0.9, 0.8, 0.1, 0.2]),
labels=["Projection", "Valeur efficace"]
)
# -- Boutons de projection de l'axe 3D
self.projX_button = Button(
ax=plt.axes([0.9, 0.67, 0.1, 0.03]),
label='Axe réel'
)
self.projY_button = Button(
ax=plt.axes([0.9, 0.635, 0.1, 0.03]),
label='Axe imaginaire'
)
self.projZ_button = Button(
ax=plt.axes([0.9, 0.60, 0.1, 0.03]),
label='Plan complexe'
)
# Listes et dictionaires
self.axes = [self.vectaxe, self.timeaxe, self.axe3D]
self.sliders = [self.amp_slider, self.phi_slider]
self.parameters = {}
# Tracé du graphique
self.setup()
self.refresh()
return
def setup(self):
# Appels aux fonctions de configuration initiale de chaque axe
for axe in self.axes:
axe.setup()
# Configuration des widgets pour lancer un rafraichissement en cas de modification
for slider in self.sliders:
slider.on_changed(self.refresh)
self.parameters_check.on_clicked(self.refresh)
self.reset_button.on_clicked(self.reset)
self.projX_button.on_clicked(self.axe3D.projX)
self.projY_button.on_clicked(self.axe3D.projY)
self.projZ_button.on_clicked(self.axe3D.projZ)
# Affichage du Copyright
self.fig.text(0.01, 0.98, "Gaël Pongnot, CC-BY-NC", size=8)
# Configuration de la fenêtre (Qt)
win = self.fig.canvas.window()
win.setMinimumSize(1200, 800)
win.showMaximized()
def refresh(self, val=None):
# Lecture des nouvelles valeurs
self.set_veff(self.amp_slider.val)
self.set_phi(self.phi_slider.val)
self.set_parameters(self.parameters_check.get_status())
# Rafraichissement des axes
for axe in self.axes:
axe.refresh()
# Actualisation de l'affichage
self.fig.canvas.draw()
return
def reset(self, event=None):
# Remise à zéro des sliders -> déclenche un rafraichissement
for slider in self.sliders:
slider.reset()
return
def set_vmax(self, v_max):
# Modification des attributs liés à v_max
self.v_max = v_max
self.v_eff = v_max/np.sqrt(2)
self.v_ref = self.v_max*np.cos(self.phasor)
# Application du changement aux axes
for axe in self.axes:
axe.set_vmax(self.v_max)
return
def set_veff(self, v_eff):
# Transfert de la modification à set_vmax
self.set_vmax(np.sqrt(2)*v_eff)
return
def set_phi(self, phi):
# Modification des attributs liés à phi
self.phi = phi
# Application du changement aux axes
for axe in self.axes:
axe.set_phi(self.phi)
return
def set_parameters(self, p):
# Modification des attributs liés à p
self.parameters["projection"] = p[0]
self.parameters["v_eff"] = p[1]
# Application du changement aux axes
for axe in self.axes:
axe.set_parameters(self.parameters)
return
if __name__ == '__main__':
# Execute when the module is not initialized from an import statement.
plt.close('all')
my_plot = TriPlot()
plt.show(block=False)