Systems with two different execution rates

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Samy Alkhayat 2022-10-18

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https://ww2.mathworks.cn/matlabcentral/answers/1830233-systems-with-two-different-execution-rates

评论： Samy Alkhayat 2022-10-21

Hello,

I want to simulate 2 models that execute at 2 different rates

System 1 output (at 20 ms) is an input to system 2 (which executes at 10 ms), and system 2 output goes back to system 1 as a feedback signal.

How can this be accomplished in Simulink environment?

Thanks in anvance!

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Answer 1

Walter Roberson 2022-10-21

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If what you have is two blocks (or subsystems) both inside the same model, then you could use https://www.mathworks.com/help/simulink/slref/ratetransition.html rate transition block .

I am not familiar enough with Simulink to know all of the conditions under which blocks can end up running at different rates. I know that when you use a Simulink buffer block or a conversion between pixel streams and frames such as convertToFrames that the other side of the block is considered to run at a different rate.

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Samy Alkhayat 2022-10-21

I think this should fulfill the purpose of my application. Thank you!

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Answer 2

Paul 2022-10-18

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Hi Samy,

Are you intending to have one model reference the other via a Model block?

If so, and if you have at least R2022a, I suggest you check out this blog post, the comments at the bottom, and the links to the relevant doc pages. If you don't have 2022a, I don't think it can be done (I could be wrong).