System Identification Toolbox

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The sample time of the linear model used for initializing the model must match that of the estimation data.

Last post by fyousefi « Tue Mar 02, 2021 3:10 pm

by fyousefi » Tue Mar 02, 2021 3:10 pm

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Last post by fyousefi
Tue Mar 02, 2021 3:10 pm
In the "nlarx(DATA, LINMOD, NONLINEARITY,...)" command, LINMOD must be an IDPOLY model.

Last post by fyousefi « Tue Mar 02, 2021 3:10 pm

by fyousefi » Tue Mar 02, 2021 3:10 pm

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Last post by fyousefi
Tue Mar 02, 2021 3:10 pm
The nonlinearity estimator must be specified using a nonlinearity estimator object or a character vector that represents

Last post by fyousefi « Tue Mar 02, 2021 3:09 pm

by fyousefi » Tue Mar 02, 2021 3:09 pm

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687 Views

Last post by fyousefi
Tue Mar 02, 2021 3:09 pm
The "nk" property must have as many elements as there are inputs.

Last post by fyousefi « Tue Mar 02, 2021 3:08 pm

by fyousefi » Tue Mar 02, 2021 3:08 pm

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Last post by fyousefi
Tue Mar 02, 2021 3:08 pm
The prediction horizon must be larger than the model order.

Last post by fyousefi « Tue Mar 02, 2021 3:08 pm

by fyousefi » Tue Mar 02, 2021 3:08 pm

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721 Views

Last post by fyousefi
Tue Mar 02, 2021 3:08 pm
The number of input samples must be same as the length of the frequency vector.

Last post by fyousefi « Tue Mar 02, 2021 3:07 pm

by fyousefi » Tue Mar 02, 2021 3:07 pm

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Last post by fyousefi
Tue Mar 02, 2021 3:07 pm
The sizes of K and/or E matrices are incompatible with that of the prediction horizon.

Last post by fyousefi « Tue Mar 02, 2021 3:06 pm

by fyousefi » Tue Mar 02, 2021 3:06 pm

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429 Views

Last post by fyousefi
Tue Mar 02, 2021 3:06 pm
Parametric models cannot be estimated using frequency response data with no inputs.

Last post by fyousefi « Tue Mar 02, 2021 3:06 pm

by fyousefi » Tue Mar 02, 2021 3:06 pm

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711 Views

Last post by fyousefi
Tue Mar 02, 2021 3:06 pm
Time series models (no inputs) cannot be estimated using frequency domain data.

Last post by fyousefi « Tue Mar 02, 2021 3:05 pm

by fyousefi » Tue Mar 02, 2021 3:05 pm

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630 Views

Last post by fyousefi
Tue Mar 02, 2021 3:05 pm
When estimation focus is ''simulation'', non differentiable nonlinearity estimators ("treepartition", "neuralnet") canno

Last post by fyousefi « Tue Mar 02, 2021 3:04 pm

by fyousefi » Tue Mar 02, 2021 3:04 pm

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377 Views

Last post by fyousefi
Tue Mar 02, 2021 3:04 pm
The weighting filter used for estimation must be stable. Note that the cell array '{'A,B,C,D'}' specification of the fil

Last post by fyousefi « Tue Mar 02, 2021 3:04 pm

by fyousefi » Tue Mar 02, 2021 3:04 pm

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416 Views

Last post by fyousefi
Tue Mar 02, 2021 3:04 pm
The weighting filter used for estimation must be stable.

Last post by fyousefi « Tue Mar 02, 2021 3:04 pm

by fyousefi » Tue Mar 02, 2021 3:04 pm

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656 Views

Last post by fyousefi
Tue Mar 02, 2021 3:04 pm
The ETFE resolution value must be a positive number greater than 2.

Last post by fyousefi « Tue Mar 02, 2021 3:03 pm

by fyousefi » Tue Mar 02, 2021 3:03 pm

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727 Views

Last post by fyousefi
Tue Mar 02, 2021 3:03 pm
Data should be specified using an IDDATA object when there are more than one input or output signals.

Last post by fyousefi « Tue Mar 02, 2021 3:02 pm

by fyousefi » Tue Mar 02, 2021 3:02 pm

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770 Views

Last post by fyousefi
Tue Mar 02, 2021 3:02 pm
The command cannot be used for frequency domain data. Use the "arx" command instead.

Last post by fyousefi « Tue Mar 02, 2021 3:02 pm

by fyousefi » Tue Mar 02, 2021 3:02 pm

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559 Views

Last post by fyousefi
Tue Mar 02, 2021 3:02 pm
The model size is not consistent with the number of columns in the data matrix.

Last post by fyousefi « Tue Mar 02, 2021 3:01 pm

by fyousefi » Tue Mar 02, 2021 3:01 pm

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408 Views

Last post by fyousefi
Tue Mar 02, 2021 3:01 pm
The first input argument of the "delayest" command must be an IDDATA object.

Last post by fyousefi « Tue Mar 02, 2021 3:01 pm

by fyousefi » Tue Mar 02, 2021 3:01 pm

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381 Views

Last post by fyousefi
Tue Mar 02, 2021 3:01 pm
The combination of delay limits will result in {0,number,integer} delay-combinations, which is more than the allowed num

Last post by fyousefi « Tue Mar 02, 2021 3:00 pm

by fyousefi » Tue Mar 02, 2021 3:00 pm

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437 Views

Last post by fyousefi
Tue Mar 02, 2021 3:00 pm
In the "delayest(DATA,NA,NB,NKMIN,NKMAX)" command, NKMIN must be non-negative. Shift data if necessary to look for negat

Last post by fyousefi « Tue Mar 02, 2021 3:00 pm

by fyousefi » Tue Mar 02, 2021 3:00 pm

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384 Views

Last post by fyousefi
Tue Mar 02, 2021 3:00 pm
The "delayest" command cannot be used for multi-output data.

Last post by fyousefi « Tue Mar 02, 2021 2:55 pm

by fyousefi » Tue Mar 02, 2021 2:55 pm

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762 Views

Last post by fyousefi
Tue Mar 02, 2021 2:55 pm
In the "delayest(DATA,NA,NB,NKMIN,NKMAX)" command, NKMAX must be a row vector of length equal to the number of inputs in

Last post by fyousefi « Tue Mar 02, 2021 2:54 pm

by fyousefi » Tue Mar 02, 2021 2:54 pm

0 Replies

393 Views

Last post by fyousefi
Tue Mar 02, 2021 2:54 pm
In the "delayest(DATA,NA,NB,...)" command, NB must be a row vector of length equal to the number of inputs in DATA.

Last post by fyousefi « Tue Mar 02, 2021 2:54 pm

by fyousefi » Tue Mar 02, 2021 2:54 pm

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557 Views

Last post by fyousefi
Tue Mar 02, 2021 2:54 pm
The estimated impulse response is complex. Absolute values will be shown in the plot.

Last post by fyousefi « Tue Mar 02, 2021 2:53 pm

by fyousefi » Tue Mar 02, 2021 2:53 pm

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393 Views

Last post by fyousefi
Tue Mar 02, 2021 2:53 pm
The "cra" command cannot be used for a single signal. Use the "covf" command instead.

Last post by fyousefi « Tue Mar 02, 2021 2:53 pm

by fyousefi » Tue Mar 02, 2021 2:53 pm

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378 Views

Last post by fyousefi
Tue Mar 02, 2021 2:53 pm
The initial model or the orders specified do not correspond to a Box-Jenkins (BJ) model structure.

Last post by fyousefi « Tue Mar 02, 2021 2:52 pm

by fyousefi » Tue Mar 02, 2021 2:52 pm

0 Replies

329 Views

Last post by fyousefi
Tue Mar 02, 2021 2:52 pm

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