pid_fw_tune.m

很优良的PID控制器设计仿真程序与模型,经过严格检验

function [Kp,Ti,Td,key,lb]=pid_fw_tune(G,key1,key2,vars) 
key=0; Kp=[]; Ti=[]; Td=[]; lb=[];
K=vars(1); L=vars(2); T=vars(3);id=vars(4);
switch key1
    case 1
        switch key2
            case 4
                [m,p,w]=bode(G);
                i=find(p<-135);
                i(1);
                w(i(1));m(i(1));
                Kp=0.2333/abs(m(i(1)));Ti=1/w(i(1));
                key=1;
        end
end