Step Response of Transfer Function

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Ainars Cernavskis
Ainars Cernavskis 2022년 1월 20일
댓글: Rena Berman 2023년 11월 27일
Hello so am trying to plot the step response of this trasnsfer function , but am not really sure how do i need to write it down in den = part , any help would be great thanks. .
t=0:0.01:5;
num = 1;
den = [1 2 17];
sys = tf(num, den);
y = step(sys,t);
plot(t,y*4)
  댓글 수: 2
Sam Chak
Sam Chak 2023년 11월 23일
The original question may be beneficial to people who wish to learn how to plot the step response.
Rena Berman
Rena Berman 2023년 11월 27일
(Answers Dev) Restored edit

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Yongjian Feng
Yongjian Feng 2022년 1월 20일
편집: Yongjian Feng 2022년 1월 20일
Get help by doing:
help tf
Basically, you need to expand the denominator given in image into polynomial of s. Then take the coefficients and put into den. For example, if you expand it into 2*s^2+5*s+10, then den = [2 5 10].
To expand the denominator, you can do it manually or you can use the expand function of matlab.

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