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Find property of InputNonLineraity with idPiecewiseLinear with 0 Number of Units on idnlhw

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Clément
Clément 2023-10-12
回答： Tianyu 2023-10-18
Hi,
I Have estimate an Hammerstein-Wiener models with idnlhw. I have use for the non linearity input an idPiecewiseLinear like this :
InputNonlinearity=idPiecewiseLinear;
InputNonlinearity.NumberOfUnits = 0;
OutputNonlinearity=idPiecewiseLinear;
OutputNonlinearity.NumberOfUnits = 40;
sys1 = nlhw(data1, [1 1 3], InputNonlinearity, OutputNonlinearity);
I need to know the slope of my non-linear inlet :
But in the workspace with 0 Number of units I can't know my slope :
If someone know to extract some data to know my input you can help me a lot.
Thanks.

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回答（1 个）

Tianyu
Tianyu 2023-10-18
Hi Clément,
The slope is not a public property. You can access this using the internal command:
>> p = getInternalParameters(sys1.InputNonlinearity);
>> slope = p.LinearCoef;
Please be aware that this internal command is not documented and may change its usage in the future.

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