1. Unit feedback systems subjected to IMPULSE input 在.条件下 G E(S)=R-C=R R=1 R R 1+G 1+G1+G ype 0 system e =lime(s)=lims R(s)= →01+G(s) m s 1=0 =0 1+ K∏(s+2) KITz 1+ s'Il(s+p) SI在…条件下