第三章线性系就的时城分析法--常用揄入信号 r(t R·1() Rt R·1(t)t≥0 Rtt≥0 Rt t≥0 t<0 0t<0 t<0 (s)=L[r(t) r(s)=Lr()] r(s)=Llr(oI LIR.I(t LIR.t LA S wangl@mailxidian.edu.cn 5 历蟓毛孑牧大字 XIDIAN UNIVERSITYxtwang@mail.xidian.edu.cn 5 第三章 线性系统的时域分析法---常用输入信号        = 0 0 1( ) 0 ( ) t R t t r t ( ) [ ( )] [ 1( )] 1 r s L r t L R t s = =  =       = 0 0 0 ( ) t Rt t r t 2 ( ) [ ( )] [ ] r s L r t L R t A s = =  =        = 0 0 0 ( ) 2 2 t t Rt r t 2 3 ( ) [ ( )] [ ] 2 r s L r t L A t A s = =  =