Rainflow cycle counting in Simulink for Embedded Coder

Hi,

I am currently trying to implement a rainflow count in Simulink and the further usage on an development board (STM) by embedded coder. My input data is all of type int16, which contradicts the possibility of using an interpreted Matlab function (only double type). I also tried rainflow() as Matlab function in Simulink, but I receive a dimension mismatch error.

Anyone with an advise for rainflow cycle counting in Simulink?

Thanks

[Zahra]

Hi, I have the same problem. Have you tried to solve it? Thanks

Answer 1

[Anurag]

Hi Matthias,

I understand that you want to implement a rainflow count in Simulink and facing dimensionality inconsistencies. Please refer to the following to solve the issue you are facing:

• Data Type Conversion: Convert your int16 data to double precision for calculations. You can use the "Data Type Conversion" block in Simulink for this purpose. Make sure to set the output data type to double.
• Implement the rainflow counting algorithm in Simulink using standard blocks.
• After counting cycles, you may need to convert the results back to int16 if that's the required data type.

Links for reference:

• https://in.mathworks.com/help/ecoder/ug/data-type-conversion.html

Hope this helped.

Regards,

Anurag