状态方程
例：LiL iC + uc R uo
已知: 已知 R=3
e ( t ) = 20 sin( ω t + 30 ° ) u C ( 0 ) = 3V i L (0 ) = 0 A
e(t)
C
u u 求： i C ( 0 + ), L ( 0 + ), i R ( 0 + ), R ( 0 + )
解：由
uC (0 + ) = 3V i L (0 + ) = 0 e(0)=10V可求出
u R (0 + ) = 3V
u L (0 + ) = 7V i R (0 + ) = 1 A iC (0 + ) = 1 A