Matlab function in Simulink

I have a function which is also consist of some functions.

I want to run a simulink to put a controller to control the mass flow rate.

But, when I can the matlab function from simulink, I received a lot of errors (about the optimization part and etc.).

How can I run this matlab function continiously insimulink without error?

[Sam Chak]

Hi @Mohammad Nasiri

Yes, it is possible to control the mass flow rate in Simulink.

But can you show the governing flow equation, and the flow control law, ?

You are also encouraged to display the control block diagram here.

[Mohammad Nasiri]

Let me explain better.

There is a mass flow rate of H2 inside a fuel cell. As H2 is consued, H2O is produced and electricty and heat is generated.

All is done my some functions all in matlab.

I want to use the remaining H2 at the outlet egain (it is called recirculation), and I am sugessted to do it in simulink,

But, as I have some function like fmincon, I receive a lot of errors.

Answer 1

[Joel Van Sickel]

Hello Mohammad,

This answer addresses using the 'coder.extrinsic' setting to use more complicated functions so they work with Simulink inside of the matlab function block.

https://www.mathworks.com/matlabcentral/answers/65202-optimization-calling-fmincon-in-simulink-embedded-block

Regards,

Joel