5.1.1频率特性的基本概念 系统的传递函数Φ(s),输入信号r(t)= a sin ot d(S)= m(s) ,()=-4o (S+P2) m(s) m s ∏(s+p) s-+0 ∏I(s+p) S+J0 5-J0 i=1 +c-/)/(-2)A(o)2 C()=∑ S+10 sOyO5.1.1 频率特性的基本概念 系统的传递函数 ，输入信号 2 2 1 , ( ) ( ) ( ) ( )   + = +  = = s A R s s p m s s n i i      s j s j A s p m s s A s p m s C s n i i n i i + −  + = +  + =   = = 1 ( ) ( ) ( ) ( ) ( ) 1 2 2 1     s j j j A s j j j A s p k C s n i i i −  + +  − − + + == ( )/( 2 ) ( )/(2 ) ( ) 1 (s) r(t) = Asin t