How to create a custom block for calculating RMS of a signal?

I want to create a custom MATLAB function block to replace the Simuink RMS block(for calculating RMS of sin wave). How do I proceed?

Answer 1

[Joel Van Sickel]

Hello Krish,

here is information on using matlab functions to work in Simulink. https://www.mathworks.com/help/simulink/ug/creating-an-example-model-that-uses-a-matlab-function-block.html

As to how to specifically implement RMS in MATLAB, that is going to depend on your requirements and why you want to use your own function instead of an existing one. You could research RMS approximations or simplifications (based on assumed constant frequency or other simplifications you can get away with) to implement this.

Regards,

Joel