fig3_05.m

包含了控制理论的各种仿真程序

%  Figure 3.05      Feedback Control of Dynamic Systems, 4e
%                        Franklin, Powell, Emami
%
% fig3_05.m                                          
%Satellite Double-Pulse response Example 3.14
clf;
dI=1/5000;
F=[0, 1;0, 0];
G=[0;dI];
H=[1, 0];
J=[0];
sys=ss(F,G,H,J);
t=0:0.01:10;
%pulse input
u2=[zeros(1,500), 25*ones(1,10), zeros(1,100), -25*ones(1,10), zeros(1,381)];
[y2]=lsim(sys,u2,t);
plot(t,u2);
axis([0, 10, -26, 26]);
grid;
xlabel('Time (sec)');
ylabel('Thrust Fc');
title('Fig. 3.5(a)')
pause;
% conversion to degrees
ff=180/pi;
y2=ff*y2;
plot(t,y2);
grid;
xlabel('Time (sec)');
ylabel('\theta (deg)');
title('Fig. 3.5(b)')