把传递函数离散化就得到Z函数,在matlab里面离散化命令是:dsys=c2d(sys,0.001,*z*);【z两边的*号改成半角单引号!!】其中0.001为采样时间;G(z) =z^(-4) *( 0.0001967 z + 0.0001935)/( z^2 - 1.951 z + 0.9512)= z^(-4) *[0.0001967z ^(-1)+ 0.0001935z^(-2)]/[ 1 - 1.951 z^(-1)...