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Asked: 2026-05-30T17:41:56+00:00

I am trying to run my simulink file which have pid controller connected to

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I am trying to run my simulink file which have pid controller connected to s-function block.

When i set three values parameters of pid which are proportional, integral and derivatives it takes too long to run the whole process. Why this is happened?

In the dialog box of my pid diagram, for porportional value, its equal to the value which correspond to the constant amplitude oscillation.

Then for integral, its equal to Kcu/Ti. Ti is the ultimate period(Pu)/2 and

lastly for derivatives, its equal tu Kcu*Td and Td is Pu /8. This is refer to ziegler nichols method. and again my question is why it takes too long to running this file?

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1 Answer

  1. Editorial Team

    MATLAB S-functions are slow because they run in the MATLAB interpreter. Consider implementing it using Simulink blocks or using a “Embedded MATLAB Function” (pre-R2011a) or “MATLAB Function” (R2011a+) block.

    Read Guy and Seth‘s thoughts on Simulation performance.

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