系统连结一反馈 sys=feedback(sysg,sysh,sign) +1 正反馈 -1 负反馈 default 负反馈 System I G） System2 H(s) (0- E G=07 numh=[11]; denh=[1 2]; sysh=tf(numh,denh) Transfer function: s+2 numg=[1]; deng-[500001: 500s3+1000s2+s+1 sysg-tf(numg,deng) sys-feedback(sysg.sysh) School of Mechanical Engineering ME369-Lecture 4.5 Shanghai Jiao Tong University Fall 2015 Simulink getstart 1 10 +1 x2+3s+1 Y(s) School of Mechanical Engineering ME369-Lecture 4.5 Shanghai Jiao Tong University Fall 2015 88 ME369-Lecture 4.5 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University sys=feedback(sysg,sysh,sign) +1 正反馈 -1 负反馈 default 负反馈 numh=[1 1]; denh=[1 2]; sysh=tf(numh,denh) numg=[1]; deng=[500 0 0]; sysg=tf(numg,deng) sys=feedback(sysg,sysh) Transfer function: s + 2 -------------------------- 500 s^3 + 1000 s^2 + s + 1 系统连结—反馈 ME369-Lecture 4.5 Fall 2015 School of Mechanical Engineering Shanghai Jiao Tong University Simulink getstart