例：非线性特性如下：i二v2 y=Yim·sint v2=V2m·sino2t V=V+V2 g)人ur +kV:cos(.)cos2o 2 cos203 22 例：非线性特性如下： i = kv v V t 1 1m 1 = ⋅sinω v V t 2 2m 2 = ⋅sinω 1 2 v = v + v V t k V t k kV V t V V kV V t k i m m m m m m m m 2 2 2 1 2 1 2 1 2 1 1 2 1 2 2 2 2 1 cos 2 2 cos 2 2 cos( ) ( ) cos( ) 2 ω ω ω ω ω ω − + − − = + − +