Transfer function State Optimisation

2012 3 25
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更新时间：2015 1 8
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I have an input and an output file through experimental data. Input should go to a transfer function block and output graph should match with output of data from experiment. I have a rough transfer function, approximately matching with the output, but not precisely matching it. I am trying to use control and estimation under 'tools' but not getting the proper result. How exactly to go about configuring that tool? Akarsh

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Arkadiy Turevskiy
Arkadiy Turevskiy 2012-3-26

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Take a look at the function tfest in System Identification Toolbox. You can specify the number of poles and zeros for your transfer function and the tool will find the coefficients to ensure the best fit.
http://www.mathworks.com/help//ident/ref/tfest.html http://www.mathworks.com/products/demos/sysid/estimating-transfer-functions-and-process-models.html
HTH. Arkadiy

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yem
yem 2014-12-14
hi arkadiy please i have a differentiel equation how can i use this toolbox ??
You use case grey-box model estimation capabilities. See this example .

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