ufolpd.m

控制系统计算机辅助设计——MATLAB语言与应用(源代码）

function [Gc,Kp,Ti,Td]=ufolpd(key,K,L,T,N)
switch key
case 1, a1=1.32; b1=0.92; a2=4; b2=0.47; a3=3.78; b3=0.84; gam=0.95;
case 2, a1=1.38; b1=0.9; a2=4.12; b2=0.9; a3=3.62; b3=0.85; gam=0.93;
case 3, a1=1.35; b1=0.95; a2=4.52; b2=1.13; a3=3.7; b3=0.86; gam=0.97;
end
A=L/T, Kp=a1*A^b1/K; Ti=a2*T*A^b2; Td=a3*T*(1-b3*A^(-0.02))*A^gam;
s=tf('s'); Gc=Kp*(1+1/Ti/s+Td*s/(1+Td/N*s));