1–首先将间的引出点后移到方框的输出端34,GsGs3Gs3HsRs4GsCs2Gs1Gs3Hs1HsH2(s)3Gs3HsRs4GsCs2Gs1Gs3Hs1Hs41GsH2(s)例化简系统的结构图,求传递函数
2–接着将组成的内反馈网络简化,其等效传递函数为343,,GsGsHs34343431GsGsGsGsGsHs34GsRsCs2Gs1Gs1Hs34HsGsH2(s)/G4(s)3Gs3HsRs4GsCs2Gs1Gs3Hs1Hs41GsH2(s)3–得到图为34GsRsCs2Gs1Gs1Hs34HsGsH2(s)/G4(s)3Gs3HsRs4GsCs2Gs1Gs3Hs1Hs41GsH2(s)4–得到图为–然后将组成的内反馈网络简化,其等效传递函数为:23424,,GsGsHsGs234233432321GsGsGsGsGsGsHsGsGsHs+RsCs23Gs1Gs1Hs34GsRsCs2Gs1Gs1Hs34HsGsH2(s)/G4(s)()()()()()()()()()()()()()()()()1234232343123411AGsGsGsGsGsGsGsHsGsGsHsGsGsGsGsHs+=++RsCs23Gs1Gs1Hs最后将求得其传递函数为:234233432321GsGsGsGsGsGsHsGsGsHs+其中:G1