Simulación de circuitos eléctricos con python eispice
Posted on vie 06 abril 2012 in Tutorial de Python • 5 min read
Eispice es un simulador de circuitos clone del Motor de simulación de Berkley Spice 3.
Lo interesante es que se puede usar el lenguaje de programación Python para realizar simulación de circuitos.
Tiene documentación de distintos ejemplos y un manual.
Para instalarlo se descarga la fuente del eispice. Se descomprime y luego se compila e instala:
tar -xvjf eispice-0.11.6.tar.bz2
cd eispice-0.11.6/
sudo python setup.py install
Un ejemplo sencillo muestra un circuito RC con una fuente sinusoidal, se muestra la gráfica de la tensión y la corriente.
La fuente estará entre el nodo de tierra y el nodo 1, la resistencia entre el nodo 1 y el nodo 2, el condensador estará entr el nodo 2 y el nodo tierra.
A continuación se muestra el código python de la definición del circuito:
#!/usr/bin/env python
#Importar modulo eispice
import eispice
#Se crea el circuito con el titulo
cct = eispice.Circuit("Prueba de circuito RC")
#Se crea la fuente de tension, con valor, se define un
#valor DC de 10, y una segnal senosoidal de valor offset, amplitud,
#frecuencia, retardo, amortiguacion.
cct.Vx = eispice.V(1, eispice.GND,10,eispice.Sin(10,10,'10M'))
#Resistencia de 20 K ohm.
cct.R1 = eispice.R(1,2,'20kOhm')
#Capacitor de 10 nano faradio.
cct.C1 = eispice.C(2,eispice.GND, '10n')
#Se ejecuta el analisis definiendo el tiempo de analisis.
cct.tran('0.5n', '100n')
#Se captura los resultados
resultados = cct.results
print "Se muestra los resultados"
print resultados
#Se crea la grafica
eispice.plot(cct)
El resultado de la ejecución y luego las gráficas: Se muestran los resultados:
[[ 0.00000000e+00 1.00000000e+01 -1.35525272e-20 1.00000000e+01]
[ 5.00000000e-12 1.00031416e+01 -1.57079626e-07 1.00000000e+01]
[ 5.50000000e-12 1.00034558e+01 -1.72787588e-07 1.00000000e+01]
[ 6.50000000e-12 1.00040841e+01 -2.04203512e-07 1.00000000e+01]
[ 8.50000000e-12 1.00053407e+01 -2.67035355e-07 1.00000000e+01]
[ 1.25000000e-11 1.00078540e+01 -3.92699027e-07 1.00000000e+01]
[ 2.05000000e-11 1.00128805e+01 -6.44026281e-07 1.00000000e+01]
[ 3.65000000e-11 1.00229336e+01 -1.14668021e-06 1.00000000e+01]
[ 6.85000000e-11 1.00430397e+01 -2.15198395e-06 1.00000000e+01]
[ 1.32500000e-10 1.00832512e+01 -4.16256080e-06 1.00000000e+01]
[ 2.60500000e-10 1.01636697e+01 -8.18347813e-06 1.00000001e+01]
[ 5.16500000e-10 1.03244696e+01 -1.62234571e-05 1.00000004e+01]
[ 1.01650000e-09 1.06382517e+01 -3.19125016e-05 1.00000016e+01]
[ 1.51650000e-09 1.09514039e+01 -4.75700131e-05 1.00000036e+01]
[ 2.01650000e-09 1.12636172e+01 -6.31805394e-05 1.00000064e+01]
[ 2.51650000e-09 1.15745834e+01 -7.87286750e-05 1.00000099e+01]
[ 3.01650000e-09 1.18839958e+01 -9.41990756e-05 1.00000142e+01]
[ 3.51650000e-09 1.21915488e+01 -1.09576474e-04 1.00000193e+01]
[ 4.01650000e-09 1.24969391e+01 -1.24845694e-04 1.00000252e+01]
[ 4.51650000e-09 1.27998652e+01 -1.39991667e-04 1.00000318e+01]
[ 5.01650000e-09 1.31000281e+01 -1.54999446e-04 1.00000392e+01]
[ 5.51650000e-09 1.33971317e+01 -1.69854221e-04 1.00000473e+01]
[ 6.01650000e-09 1.36908828e+01 -1.84541330e-04 1.00000562e+01]
[ 6.51650000e-09 1.39809914e+01 -1.99046280e-04 1.00000658e+01]
[ 7.01650000e-09 1.42671712e+01 -2.13354756e-04 1.00000761e+01]
[ 7.51650000e-09 1.45491398e+01 -2.27452637e-04 1.00000871e+01]
[ 8.01650000e-09 1.48266190e+01 -2.41326011e-04 1.00000988e+01]
[ 8.51650000e-09 1.50993350e+01 -2.54961186e-04 1.00001112e+01]
[ 9.01650000e-09 1.53670184e+01 -2.68344706e-04 1.00001243e+01]
[ 9.51650000e-09 1.56294053e+01 -2.81463363e-04 1.00001381e+01]
[ 1.00165000e-08 1.58862366e+01 -2.94304210e-04 1.00001524e+01]
[ 1.05165000e-08 1.61372590e+01 -3.06854575e-04 1.00001675e+01]
[ 1.10165000e-08 1.63822246e+01 -3.19102073e-04 1.00001831e+01]
[ 1.15165000e-08 1.66208917e+01 -3.31034616e-04 1.00001994e+01]
[ 1.20165000e-08 1.68530248e+01 -3.42640428e-04 1.00002162e+01]
[ 1.25165000e-08 1.70783948e+01 -3.53908057e-04 1.00002336e+01]
[ 1.30165000e-08 1.72967792e+01 -3.64826381e-04 1.00002516e+01]
[ 1.35165000e-08 1.75079627e+01 -3.75384627e-04 1.00002701e+01]
[ 1.40165000e-08 1.77117366e+01 -3.85572374e-04 1.00002891e+01]
[ 1.45165000e-08 1.79079000e+01 -3.95379569e-04 1.00003087e+01]
[ 1.50165000e-08 1.80962593e+01 -4.04796533e-04 1.00003287e+01]
[ 1.55165000e-08 1.82766286e+01 -4.13813972e-04 1.00003491e+01]
[ 1.60165000e-08 1.84488298e+01 -4.22422987e-04 1.00003700e+01]
[ 1.65165000e-08 1.86126930e+01 -4.30615082e-04 1.00003914e+01]
[ 1.70165000e-08 1.87680566e+01 -4.38382173e-04 1.00004131e+01]
[ 1.75165000e-08 1.89147671e+01 -4.45716595e-04 1.00004352e+01]
[ 1.80165000e-08 1.90526798e+01 -4.52611109e-04 1.00004576e+01]
[ 1.85165000e-08 1.91816587e+01 -4.59058911e-04 1.00004804e+01]
[ 1.90165000e-08 1.93015763e+01 -4.65053638e-04 1.00005035e+01]
[ 1.95165000e-08 1.94123144e+01 -4.70589374e-04 1.00005269e+01]
[ 2.00165000e-08 1.95137637e+01 -4.75660656e-04 1.00005506e+01]
[ 2.05165000e-08 1.96058241e+01 -4.80262479e-04 1.00005745e+01]
[ 2.10165000e-08 1.96884046e+01 -4.84390302e-04 1.00005986e+01]
[ 2.15165000e-08 1.97614239e+01 -4.88040050e-04 1.00006229e+01]
[ 2.20165000e-08 1.98248099e+01 -4.91208123e-04 1.00006474e+01]
[ 2.25165000e-08 1.98784999e+01 -4.93891394e-04 1.00006720e+01]
[ 2.30165000e-08 1.99224410e+01 -4.96087214e-04 1.00006968e+01]
[ 2.35165000e-08 1.99565899e+01 -4.97793416e-04 1.00007216e+01]
[ 2.40165000e-08 1.99809129e+01 -4.99008317e-04 1.00007465e+01]
[ 2.45165000e-08 1.99953859e+01 -4.99730718e-04 1.00007715e+01]
[ 2.50165000e-08 1.99999946e+01 -4.99959906e-04 1.00007965e+01]
[ 2.55165000e-08 1.99947346e+01 -4.99695655e-04 1.00008215e+01]
[ 2.55665000e-08 1.99936659e+01 -4.99642097e-04 1.00008240e+01]
[ 2.56665000e-08 1.99912327e+01 -4.99520185e-04 1.00008290e+01]
[ 2.58665000e-08 1.99851830e+01 -4.99217203e-04 1.00008390e+01]
[ 2.62665000e-08 1.99683546e+01 -4.98374783e-04 1.00008589e+01]
[ 2.67665000e-08 1.99384666e+01 -4.96879139e-04 1.00008838e+01]
[ 2.72665000e-08 1.98987705e+01 -4.94893095e-04 1.00009086e+01]
[ 2.77665000e-08 1.98493055e+01 -4.92418613e-04 1.00009333e+01]
[ 2.82665000e-08 1.97901205e+01 -4.89458134e-04 1.00009578e+01]
[ 2.87665000e-08 1.97212738e+01 -4.86014579e-04 1.00009822e+01]
[ 2.92665000e-08 1.96428334e+01 -4.82091348e-04 1.00010064e+01]
[ 2.97665000e-08 1.95548766e+01 -4.77692311e-04 1.00010304e+01]
[ 3.02665000e-08 1.94574904e+01 -4.72821810e-04 1.00010542e+01]
[ 3.07665000e-08 1.93507707e+01 -4.67484652e-04 1.00010777e+01]
[ 3.12665000e-08 1.92348230e+01 -4.61686104e-04 1.00011009e+01]
[ 3.17665000e-08 1.91097616e+01 -4.55431888e-04 1.00011238e+01]
[ 3.22665000e-08 1.89757100e+01 -4.48728177e-04 1.00011464e+01]
[ 3.27665000e-08 1.88328004e+01 -4.41581585e-04 1.00011687e+01]
[ 3.32665000e-08 1.86811739e+01 -4.33999167e-04 1.00011906e+01]
[ 3.37665000e-08 1.85209802e+01 -4.25988405e-04 1.00012121e+01]
[ 3.42665000e-08 1.83523773e+01 -4.17557205e-04 1.00012332e+01]
[ 3.47665000e-08 1.81755316e+01 -4.08713886e-04 1.00012538e+01]
[ 3.52665000e-08 1.79906176e+01 -3.99467177e-04 1.00012740e+01]
[ 3.57665000e-08 1.77978178e+01 -3.89826203e-04 1.00012938e+01]
[ 3.62665000e-08 1.75973226e+01 -3.79800478e-04 1.00013130e+01]
[ 3.67665000e-08 1.73893297e+01 -3.69399897e-04 1.00013317e+01]
[ 3.72665000e-08 1.71740444e+01 -3.58634724e-04 1.00013499e+01]
[ 3.77665000e-08 1.69516792e+01 -3.47515582e-04 1.00013676e+01]
[ 3.82665000e-08 1.67224536e+01 -3.36053445e-04 1.00013847e+01]
[ 3.87665000e-08 1.64865937e+01 -3.24259624e-04 1.00014012e+01]
[ 3.92665000e-08 1.62443323e+01 -3.12145759e-04 1.00014171e+01]
[ 3.97665000e-08 1.59959085e+01 -2.99723805e-04 1.00014324e+01]
[ 4.02665000e-08 1.57415675e+01 -2.87006020e-04 1.00014471e+01]
[ 4.07665000e-08 1.54815602e+01 -2.74004956e-04 1.00014611e+01]
[ 4.12665000e-08 1.52161433e+01 -2.60733442e-04 1.00014745e+01]
[ 4.17665000e-08 1.49455787e+01 -2.47204577e-04 1.00014872e+01]
[ 4.22665000e-08 1.46701334e+01 -2.33431712e-04 1.00014992e+01]
[ 4.27665000e-08 1.43900793e+01 -2.19428438e-04 1.00015105e+01]
[ 4.32665000e-08 1.41056926e+01 -2.05208576e-04 1.00015211e+01]
[ 4.37665000e-08 1.38172542e+01 -1.90786158e-04 1.00015310e+01]
[ 4.42665000e-08 1.35250486e+01 -1.76175418e-04 1.00015402e+01]
[ 4.47665000e-08 1.32293641e+01 -1.61390776e-04 1.00015486e+01]
[ 4.52665000e-08 1.29304927e+01 -1.46446820e-04 1.00015563e+01]
[ 4.57665000e-08 1.26287293e+01 -1.31358300e-04 1.00015633e+01]
[ 4.62665000e-08 1.23243716e+01 -1.16140106e-04 1.00015695e+01]
[ 4.67665000e-08 1.20177200e+01 -1.00807257e-04 1.00015749e+01]
[ 4.72665000e-08 1.17090772e+01 -8.53748836e-05 1.00015795e+01]
[ 4.77665000e-08 1.13987477e+01 -6.98582163e-05 1.00015834e+01]
[ 4.82665000e-08 1.10870379e+01 -5.42725681e-05 1.00015865e+01]
[ 4.87665000e-08 1.07742552e+01 -3.86333202e-05 1.00015888e+01]
[ 4.92665000e-08 1.04607085e+01 -2.29559067e-05 1.00015904e+01]
[ 4.97665000e-08 1.01467071e+01 -7.25579914e-06 1.00015911e+01]
[ 5.02665000e-08 9.83256094e+00 8.45150824e-06 1.00015911e+01]
[ 5.07665000e-08 9.51858000e+00 2.41505143e-05 1.00015903e+01]
[ 5.12665000e-08 9.20507417e+00 3.98257259e-05 1.00015887e+01]
[ 5.17665000e-08 8.89235283e+00 5.54616736e-05 1.00015863e+01]
[ 5.22665000e-08 8.58072461e+00 7.10429265e-05 1.00015831e+01]
[ 5.27665000e-08 8.27049704e+00 8.65541080e-05 1.00015792e+01]
[ 5.32665000e-08 7.96197628e+00 1.01979910e-04 1.00015745e+01]
[ 5.37665000e-08 7.65546681e+00 1.17305110e-04 1.00015690e+01]
[ 5.42665000e-08 7.35127111e+00 1.32514583e-04 1.00015628e+01]
[ 5.47665000e-08 7.04968938e+00 1.47593319e-04 1.00015558e+01]
[ 5.52665000e-08 6.75101925e+00 1.62526438e-04 1.00015480e+01]
[ 5.57665000e-08 6.45555548e+00 1.77299202e-04 1.00015395e+01]
[ 5.62665000e-08 6.16358964e+00 1.91897032e-04 1.00015303e+01]
[ 5.67665000e-08 5.87540988e+00 2.06305522e-04 1.00015203e+01]
[ 5.72665000e-08 5.59130059e+00 2.20510453e-04 1.00015097e+01]
[ 5.77665000e-08 5.31154215e+00 2.34497806e-04 1.00014983e+01]
[ 5.82665000e-08 5.03641065e+00 2.48253778e-04 1.00014862e+01]
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[ 6.17665000e-08 3.26221054e+00 3.36958643e-04 1.00013834e+01]
[ 6.22665000e-08 3.03343078e+00 3.48396774e-04 1.00013663e+01]
[ 6.27665000e-08 2.81152618e+00 3.59491119e-04 1.00013486e+01]
[ 6.32665000e-08 2.59671573e+00 3.70230729e-04 1.00013303e+01]
[ 6.37665000e-08 2.38921144e+00 3.80605005e-04 1.00013115e+01]
[ 6.42665000e-08 2.18921807e+00 3.90603710e-04 1.00012923e+01]
[ 6.47665000e-08 1.99693300e+00 4.00216975e-04 1.00012725e+01]
[ 6.52665000e-08 1.81254600e+00 4.09435313e-04 1.00012523e+01]
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[ 8.40165000e-08 1.56228033e+00 4.21904396e-04 1.00003683e+01]
[ 8.45165000e-08 1.73502596e+00 4.13266071e-04 1.00003474e+01]
[ 8.50165000e-08 1.91592812e+00 4.04219941e-04 1.00003269e+01]
[ 8.55165000e-08 2.10480829e+00 3.94774934e-04 1.00003070e+01]
[ 8.60165000e-08 2.30148005e+00 3.84940371e-04 1.00002875e+01]
[ 8.65165000e-08 2.50574932e+00 3.74725958e-04 1.00002685e+01]
[ 8.70165000e-08 2.71741452e+00 3.64141775e-04 1.00002500e+01]
[ 8.75165000e-08 2.93626674e+00 3.53198267e-04 1.00002321e+01]
[ 8.80165000e-08 3.16209002e+00 3.41906234e-04 1.00002147e+01]
[ 8.85165000e-08 3.39466149e+00 3.30276820e-04 1.00001979e+01]
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[ 9.20165000e-08 5.19155074e+00 2.40427344e-04 1.00000976e+01]
[ 9.25165000e-08 5.46933473e+00 2.26537561e-04 1.00000859e+01]
[ 9.30165000e-08 5.75158994e+00 2.12424252e-04 1.00000750e+01]
[ 9.35165000e-08 6.03803782e+00 1.98101344e-04 1.00000647e+01]
[ 9.40165000e-08 6.32839568e+00 1.83582975e-04 1.00000552e+01]
[ 9.45165000e-08 6.62237697e+00 1.68883470e-04 1.00000464e+01]
[ 9.50165000e-08 6.91969156e+00 1.54017336e-04 1.00000383e+01]
[ 9.55165000e-08 7.22004605e+00 1.38999246e-04 1.00000310e+01]
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[ 9.65165000e-08 7.82868634e+00 1.08566612e-04 1.00000186e+01]
[ 9.70165000e-08 8.13637148e+00 9.31821027e-05 1.00000135e+01]
[ 9.75165000e-08 8.44589581e+00 7.77056729e-05 1.00000093e+01]
[ 9.80165000e-08 8.75695384e+00 6.21525962e-05 1.00000058e+01]
[ 9.85165000e-08 9.06923862e+00 4.65382217e-05 1.00000031e+01]
[ 9.90165000e-08 9.38244194e+00 3.08779588e-05 1.00000011e+01]
[ 9.95165000e-08 9.69625472e+00 1.51872623e-05 9.99999996e+00]
[ 1.00000000e-07 1.00000000e+01 -2.02048261e-11 9.99999960e+00]]
===
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