2% and 5% settling times

Question

Daniel 2024-2-28

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https://ww2.mathworks.cn/matlabcentral/answers/2088126-2-and-5-settling-times

回答： Sam Chak 2024-2-28

Hello,

I have simulated the same system within matlab and simulink for 2% and 5% settling time however the results are slightly different and I am unsure why. Can somebody help explain why i may get slightly different settling values for matlab and simulink?

Matlab

2% = 28.9 seconds

5% = 21.8 seconds

Simulink

2% = 30.45 seconds

5% = 21.75 seconds

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Answer 1

Sam Chak 2024-2-28

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https://ww2.mathworks.cn/matlabcentral/answers/2088126-2-and-5-settling-times#answer_1418206

Hi @Daniel

The intellectual explanation for the discrepancy could be that one of the settling times was measured incorrectly. To confirm this, I suggest plotting both responses in MATLAB and Simulink. As for the fix, make sure that both settling times are measured using the same baseline for accurate comparison.