How to give arguments to fmincon using ssest in system identification toolbox?

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Johan Lundström 2024-10-18

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https://ww2.mathworks.cn/matlabcentral/answers/2160665-how-to-give-arguments-to-fmincon-using-ssest-in-system-identification-toolbox

评论： Johan Lundström 2024-10-21

采纳的回答： Matt J

No examples exist anywhere as far as I can tell.

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采纳的回答

Matt J 2024-10-18

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https://ww2.mathworks.cn/matlabcentral/answers/2160665-how-to-give-arguments-to-fmincon-using-ssest-in-system-identification-toolbox#answer_1534030

在 MATLAB Online 中打开

Perhaps as follows,

opts=ssestOptions(SearchMethod='fmincon');
opts.SearchOptions.Algorithm='trust-region-reflective';
opts.SearchOptions.FunctionTolerance=1e-8;
opts.SearchOptions
ans = 
            Algorithm: 'trust-region-reflective'
        StepTolerance: 1.0000e-06
    FunctionTolerance: 1.0000e-08
        MaxIterations: 100

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Matt J 2024-10-20

Constraints and bounds are not set by passing arguments to fmincon. They are specified using the init_sys argument to ssest

https://www.mathworks.com/help/ident/ref/ssest.html#mw_e6d7f1cc-3ddb-4088-a662-155a9a206070

Johan Lundström 2024-10-21

Great! Thanks!

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