how to give output of a simulink circuit as input to transfer function to see the output?

Hello,

I have a transfer function of the system.I have another simulink circuit. I want to test how the system responds to the output of the simulink circuit.

how can i connect the output of the simulink circuit to the input of transfer function?

Answer 1

[Ayush Aniket]

Hi Manaswini,

You can use the 'Transfer Fcn' block in Simulink to visualize the system's response based on the output of the Simulink circuit. You will need to connect the circuit's output to the block's input, and then connect the block's output to a scope to view the response. For more information on how the block models a linear system, please refer to the following documentation link:

https://www.mathworks.com/help/simulink/slref/transferfcn.html

[Manaswini Gangineni]

Thank you Ayush Aniket for your answer but is it okay that my transfer function is in s domain. The output of my circuit is in time domain. Do I need to do fft of the circuit output before I connect it to the transfer function block?

[Ayush Aniket]

You do not need to perform fft operation on the output of the circuit. The 'Transfer Fcn' block in Simulink is designed to work directly with time-domain signals. Refer to the following section on the documentation page which states that the input and output are 'time-domain' signals:

https://www.mathworks.com/help/simulink/slref/transferfcn.html#br3neqy-1

[Manaswini Gangineni]

Thank you