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Cannot select parameters to estimate using Simulink design optimization

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bit123
bit123 on 5 Apr 2020
Edited: ALESSANDRO GENTILI on 21 Jan 2021
I have a Simulink model with 6 parameters of 6 gain blocks. I specified them as the Simulink parameters directly for each gain block in the model. I also specified 6 initial values for these parameters. Then, I used the parameter estimation function in the Simulink design optimization tool to estimate the 6 gain parameters following my input/output experiment data. But I could not select these parameters to estimate (the boxes next to the parameters could not be checked as in the attachment). I would appreciate if someone could advise me on this.
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ALESSANDRO GENTILI
ALESSANDRO GENTILI on 21 Jan 2021
I've found a solution for the Input Panel problem. I've simply added an input and output block (under sinks and sources), this way the Parameter Estimator can see the input.

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