基于Matlab实现超前滞后校正（源码）.rar

close all;clc;clear; %transfer function s=tf('s'); G=1/((s+.5)*(s+1.5)); %closeloop response without any controller step(G/(1+G)); grid on legend('closeloop response without any controller'); pole(G/(1+G)); stepinfo(G/(1+G)) %Controller Design zita=0.7; wn=5.71; poles=roots([1 2*zita*wn wn^2]); %期望阻尼和频率 %Root locus figure; rlocus(G); legend('Root Locus'); %calculate the Shortage Phase syms s1 G1=1/((s1+0.5)*(s1+1.5)); phi=double(angle(subs(G1,s1,-4+4.08i)))*180/pi; sphi=180-phi; %T , a z=-4; p=-4-4.01/tand(90-sphi); %% %shart andazeh Gc1=(s1-z)/(s1-p); kc=1/(double(abs(subs(Gc1*G1,-4+4.01i)))); %simulatuion Gc=(s-z)/(s-p); Gcloseloop=kc*Gc*G/(1+kc*Gc*G); figure; rlocus(Gc*G); figure; step(Gcloseloop); % hold on % step(G/(1+G)); grid on; legend('step response with controller'); stepinfo(Gcloseloop) figure step(G/(1+G)); hold on step(Gcloseloop); legend('无超前校正','有超前校正') grid on