dynamique_systeme_elec.py

Created by yacine-ahjaou

Created on February 20, 2022

693 Bytes

# Type your text here
intensité d'un courant électrique = débit de charge électrique

régime continu (I constante):
  I = Q / delta t
  
régime variable (i et u dépend du t):
  i(t) = q'(t) 
  
condensateur = ensemble de 2 armatures conductrices identiques face à face
parallèle séparé par un isolant
q(t) = C Uc(t)
i(t) = C Uc'(t)

temps caractéristique d'un circuit RC = RC
pour la charge :
  Uc(RC) = 63% E
pour la décharge :
  Uc(RC) = (1-63%) E

équation différentielle :
  E = Uc + RC Uc'
  Uc= Uch + Ucp
  Uch + RC Uch' = O 
  Uch = A exp(-t/RC)
  Ucp = constante, quand le régime permanent est atteint
  Ucp = E
  Uc = A exp(-t/RC) + E

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