fig6_85.m

包含了控制理论的各种仿真程序

%  Figure 6.85      Feedback Control of Dynamic Systems, 4e
%                   Franklin, Powell, Emami
% 

clear all
close all;

w=logspace(-2,2,100);
ff=180/pi;
ii=1:78;
semilogx(w(ii),-w(ii)*ff);
grid;
xlabel('w (rad/sec)');
ylabel('phase (deg)');
title('Fig. 6.85 Phase lag due to pure time delay.');