Individual input/output response in Simulink

I'm studying the design of a controller in a MIMO system.

Example (2 input, 2 output)

Using MATLAB I obtain the following step response (with the step command)

while in Simulink

I use the following scheme

I'd like to view the effect that a single input has on a single output. Is there a way to obtain the (n_input X n_output) representation in Simulink?

Answer 1

[Suhan]

Yes, you can analyze the effects of a specific input on an output. In Simulink, you can use Linear System Analyzer Tool.

Alternatively, since you know the transfer function or state-space model of the system you might want to consider working in MATLAB as mentioned below:

• You can use the transfer function corresponding to the input-output pair of interest for frequency domain analysis in MATLAB. Please refer to the following page to know more:

https://in.mathworks.com/help/control/ug/frequency-response-of-a-mimo-system.html

https://in.mathworks.com/help/control/ug/mimo-transfer-function-models.html

https://in.mathworks.com/help/control/ug/analyzing-mimo-models.html ( I find this one a great tool for MIMO system analysis)

• The following is a simpler way which allows you to choose the input and output pair for SS or Frequency domain analysis:

https://in.mathworks.com/help/control/ug/select-inputoutput-pairs-in-mimo-models.html