Can you compile a SIMULINK model with parameters in a transfer function block?

I have a SIMULINK model with a Transfer Fcn block defined as

• Numerator coefficients: [A*B]
• Denominator coefficients: [C 2*D E^2]

I have set A, B, C, D, E as global (tunable) parameters. However when I try to compile the model I get several warnings resembling:

Warning: Reducing expression [C 2*D E^2] in parameter field Denominator of model to its numerical equivalent because the expression has one or more unsupported operators. This expression resolves to tunable variables (C (base workspace)). You will be unable to tune this expression during model execution

• Is it possible to compile a SIMULINK model with runtime set parameters in transfer functions?
• If not how can I speed up a large number of calls to the SIMULINK model with different parameters?

(all parameters are scalar constants which are set when calling the model.)

Answer 1

[Vaibhav Awale]

Hi Jonathan,

The build warnings arise due to limitations on the use of tunable variables in expressions. For example, expressions containing the ^ or [] operators are unsupported expressions for code generation. Please refer to the documentation titled "Tunable Expression Limitations."

Documentation Link

Regards,

Vaibhav