Problem after Converting the simulink model from R2024a to R2022b

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Vangala 2024-12-9

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https://ww2.mathworks.cn/matlabcentral/answers/2171699-problem-after-converting-the-simulink-model-from-r2024a-to-r2022b

回答： Vangala 2025-2-11

I have a Simulink model (1D model using simscape blocks) in R2024a. I have to generate .exe file. Bz of situation, I wanted to degrade my model to R2022b. But when I run that model in R2022b, it causing multiple errors. I have rearranged the simscape blocks there according to R2022b. Even then this error persists. What are the precautions should be taken to eliminate this error?

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Yukthi S 2024-12-9

Hi @Vangala,

Can you share the error message and the simulink model for better understanding?

Vangala 2024-12-9

Error " No of variables exceeds no of equations"

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Answer 1

Vangala 2025-2-11

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https://ww2.mathworks.cn/matlabcentral/answers/2171699-problem-after-converting-the-simulink-model-from-r2024a-to-r2022b#answer_1559488

Hi guys,

Thanks for anwering the question above. I had solved it myself.

In R2022b, When you use pressure and temperature sensor, connect its A to main stream flow and B to the absolute reference. Remove unwanted sensors in the whole loop.

This method solved the issue: "No of variables greater than no. of equations".