error step input and velocity input

2 次查看（过去 30 天）

ali 2011-11-1

HOW can Find the error of following system to step input and velocity input.?

g=tf([2000],[1 15 50 2000])

ali 2011-11-1

i find for error step

k=dcgain

ess=1/(1+k)

Fangjun Jiang 2011-11-1

The function to use is stepinfo() like below. But your system is not stable. What "error" do you mean? Steady-state error?

sys=tf(1, [1 4 10]);
[y,t]=step(sys);
plot(t,y);grid on;
stepinfo(y,t,1/10)

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