# How can i obtain response of MIMO for different 2 input?

1 view (last 30 days)
Volkan Yangin on 2 Dec 2020
Edited: Volkan Yangin on 2 Dec 2020
Hi,
You can see my arbitrary state space model below. First input should be 0.1*step, and second one 100*step.
How can i define these different inputs?
Thx!
clc
A=[-7463.41463414634,-626.936829268293,8090.33146341463;-723.377110694184,-16939.5629268293,17662.9400375235;373.180731707317,553.795365853659,-926.956092439024]
B=[37.8048780487805,4.87804878048781e-05;64.7335834896811,8.35272045028143e-05;85.2321951219512,0.000487804878048781]
C=[-7463.41463414634,-626.926829268293,8090.34146341463;0,1,0;373.170731707317,553.785365853659,-926.956092439024;1,0,0;0,0,1]
D=[37.8048780487805,4.87804878048781e-05;0,0;85.2321951219512,0.000487804878048781;0,0;0,0]
sys=ss(A,B,C,D);
step(0.1*sys)
##### 2 CommentsShowHide 1 older comment
Volkan Yangin on 2 Dec 2020
Thanks a lot

Ameer Hamza on 2 Dec 2020
Although lsim() as recommended by Mathieu is a general solution. However, an alternative way is to scale the B and D matrices and still use step()
sys=ss(A,0.1*B,C,0.1*D);
step(sys)
or
sys=ss(A,100*B,C,100*D);
step(sys)
Volkan Yangin on 2 Dec 2020
Thanks Ameer
It seems that creating of two signals with lsim and sum of the responses of them will solve my problem. I will create 2 row matrix to prepare 2 different signals according to my time scale.
I have found similar problem in MATLAB central https://www.mathworks.com/matlabcentral/answers/381118-lsim-with-two-input-signal
Thanks a lot all of contributions