How to increase the amplitude of a step signal?

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Vincent Chan
Vincent Chan 2020-6-7
回答： Ameer Hamza 2020-6-7
Hi, can i know how to change the amplitude of unit step. The amplitude of the unit step shown here is 1. I wanna change it to 5.
s = tf('s');
G = (s+6)/((s+4)*(s+7)*(s+9)*(s+12));
T = feedback(G,1);
t = (0:0.05:0.2)';
unitstep = t>=0;
[y,t,x] = lsim(T,unitstep,t);
plot(t,y,'y',t,unitstep,'m')
xlabel('Time (sec)')
ylabel('Amplitude')
ylim([0 5])
title('Input-purple, Output-yellow')

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回答（1 个）

Ameer Hamza
Ameer Hamza 2020-6-7
Change line to
unitstep = 5*(t>=0);

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