Why does matlab plot the unit step like a straight line?

조회 수: 9(최근 30일)
Hello, I want to pot only the unit step in matlab with this code:
I expectet the step response like this:
But i get a plot in matlab like this:
Why do I get a step response like the second picture. Should a step input it not look like my first picture? Thanks

채택된 답변

Sam Chak
Sam Chak 2022년 11월 8일
System 1:
s = tf('s');
sys1 = 1/s; % integrator system
System 2:
sys2 = zpk([], [], 1) % just a static gain
sys2 = 1 Static gain.

추가 답변(1개)

Dyuman Joshi
Dyuman Joshi 2022년 11월 8일
Because that's what the step response of the transfer function you mentioned looks like.
You might be looking for heaviside
syms x
fplot(heaviside(x), [-5, 5],"LineWidth",1.5)
ylim([0 1.5])

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