How to use different sampling times for 2 blocks in the same simulink model?

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Lucky 2020-8-13

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https://ww2.mathworks.cn/matlabcentral/answers/579129-how-to-use-different-sampling-times-for-2-blocks-in-the-same-simulink-model

评论： Lucky 2020-8-20

I am trying to write a RLS (Root Least squares) algorithm. I am using ode4(Runge-kutta) as my solver with a fixed step size of 0.001 seconds for my mathematical system but for RLS algorithm, I want the sample time to be 0.1 s. I have tried using sleep, pause in the RLS simulink block but doesnot seem to be working as the output I am getting is wrong. The top block is RLS block.

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Answer 1

Fangjun Jiang 2020-8-13

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It looks like a MATLAB Function block. Right click it, select "Block Parameters (Subsystem)", specify sample time as 0.1. You might need some Rate Transition blocks to resolve the resulting sample time issues.