二.乘统的晶数 H()= Roo output vector ECo input vector if. le(t=e(s,llr(t=r(s) H(S)= H(S) R(S) LInput] E(S)二.系统的转移函数 input vector output vector E j R j H j . . ( ) ( ) ( ) = =    ( ) ( ) , ( ) [ ] [ . . ] ( ) . [ ( )] ( ), [ ( )] ( ) E s R s H s L input L z sr H s if L e t E s L r t R s  = = = =