How do I get transfer function of system shown in pic

I'm trying to get transfer function of this system ,please help.

Answer 1

[Vasco Lenzi]

Hi Sixthsem

You can simulate and save to workspace input and output of your system, then use System Identification to generate a transfer function:

https://www.mathworks.com/help/ident/gs/identify-linear-models-using-the-gui.html

Alternatively there is a more modern implementation that requires System Identification and Simulink Control Design, and you can identify transfer function from the PID tuner app. You would need to create a close loop system, but you are going ot identify the open loop system response:

https://www.mathworks.com/videos/developing-dc-dc-converter-control-with-simulink-designing-digital-controller-1535539773247.html