A.閉環(huán)控制系統(tǒng) B.開環(huán)控制系統(tǒng) C.恒值控系統(tǒng) D.復(fù)合控制系統(tǒng)
A.G(S)/[1+G(S)H(S)] B.G(S)/[1-G(S)H(S)] C.G(S)/[1+H(S)] D.G(S)/[1-H(S)]
A.G1(S)+G2(S) B.G1(S)-G2(S) C.G1(S)G2(S) D.G1(S)/G2(S)