get_pdf.m

用MATLAB的脚本语言M语言编写的

function [Kp,Ki,Kd]=get_pdf(G_Sys,T_s,kH)
G_r=opt_app(G_Sys,0,2,0);
a1=G_r.den{1}(2)/G_r.den{1}(1);
a2=G_r.den{1}(3)/G_r.den{1}(1);
b=G_r.num{1}(end)/G_r.den{1}(1);
alpha=7.5167/T_s; Kd=1/b*(3*alpha-a1);
Ki=alpha^3/(b*kH);
Kp=1/b*(3*alpha*alpha-a2);