System impulse response and Convolution by matlab

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gedaa
gedaa 2011-2-20
回答： Arpan Patel 2021-2-25
Hi everyone, i am very new to matlab, and would like to konw how to obtain y(t) from below
Generate a unit step function as the input function, x(t), and an exponentially decay function as the impulse response function, h(t), such as h(t)=exp(-t/2) (note: 2 is the time constant of the system dynamic response). Using MATLAB to calculate the output of the system, y(t).
Thank you so much in advance

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回答（3 个）

psyx21
psyx21 2011-4-29
hey friends what will be the peak acceleration response for 100g 6ms half sine pulse with zeta=0. I need a matlab script with natural frequency on x axis..thanks
Paulo Silva
Paulo Silva 2011-2-20
t=0:0.1:10;
u=0*t;
u(t>=0)=1;
h=exp(-t/2);
y=u.*h;
plot(t,y)
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Paulo Silva
Paulo Silva 2011-2-21
I'm not sure about the amplitude at
plot(t,T*y(1:numel(t)))
with the step function is good compared to
step(tf([1],[1 1/2])) but with the impulse it's plot(t,y(1:numel(t))) without the T, I can't figure out why that happens.
gedaa
gedaa 2011-2-23
hey, paulo, i actually checked with my professor and he said that T doesn't need to be multiplied in the last line. Thank you soo much

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Arpan Patel
Arpan Patel 2021-2-25
t=0:0.1:10;
u=0*t;
u(t>=0)=1;
h=exp(-t/2);
y=u.*h;
plot(t,y)

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