System Identification Toolbox

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The polynomial "A" of the IDARX model must be specified as a 3-dimensional double array with A being an identity

Last post by fyousefi « Wed Mar 03, 2021 6:21 pm

by fyousefi » Wed Mar 03, 2021 6:21 pm

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Last post by fyousefi
Wed Mar 03, 2021 6:21 pm
The property "na" of the IDARX model must be specified as a square matrix of non-negative

Last post by fyousefi « Wed Mar 03, 2021 6:20 pm

by fyousefi » Wed Mar 03, 2021 6:20 pm

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367 Views

Last post by fyousefi
Wed Mar 03, 2021 6:20 pm
The sizes of matrices "A" and "B" of an idarx model must match along the first dimension.

Last post by fyousefi « Wed Mar 03, 2021 6:19 pm

by fyousefi » Wed Mar 03, 2021 6:19 pm

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Last post by fyousefi
Wed Mar 03, 2021 6:19 pm
The polynomials "A" and "B" of the IDARX model must be specified as numeric arrays. Type "idprops idarx" for more inform

Last post by fyousefi « Wed Mar 03, 2021 6:19 pm

by fyousefi » Wed Mar 03, 2021 6:19 pm

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388 Views

Last post by fyousefi
Wed Mar 03, 2021 6:19 pm
The size of the "T" factor must be N1-by-N2 where N1 = sum(Free) and N2 = size(R, ).

Last post by fyousefi « Wed Mar 03, 2021 6:18 pm

by fyousefi » Wed Mar 03, 2021 6:18 pm

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372 Views

Last post by fyousefi
Wed Mar 03, 2021 6:18 pm
The value of the "T" factor must be a matrix of finite numbers.

Last post by fyousefi « Wed Mar 03, 2021 6:17 pm

by fyousefi » Wed Mar 03, 2021 6:17 pm

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351 Views

Last post by fyousefi
Wed Mar 03, 2021 6:17 pm
The number of TRUE entries in "Free" vector must be equal to the number of free parameters of the model (see help on "np

Last post by fyousefi « Wed Mar 03, 2021 6:17 pm

by fyousefi » Wed Mar 03, 2021 6:17 pm

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339 Views

Last post by fyousefi
Wed Mar 03, 2021 6:17 pm
The value of the "Free" factor must be a logical vector of length equal to the number of model parameters (see help on "

Last post by fyousefi « Wed Mar 03, 2021 6:16 pm

by fyousefi » Wed Mar 03, 2021 6:16 pm

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367 Views

Last post by fyousefi
Wed Mar 03, 2021 6:16 pm
In the "setcov(SYS, VALUE)" command, VALUE must be positive semidefinite symmetric matrix or a structure with fields ''R

Last post by fyousefi « Wed Mar 03, 2021 6:15 pm

by fyousefi » Wed Mar 03, 2021 6:15 pm

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369 Views

Last post by fyousefi
Wed Mar 03, 2021 6:15 pm
The value of the "R" factor must be a square matrix of finite and real numbers.

Last post by fyousefi « Wed Mar 03, 2021 6:15 pm

by fyousefi » Wed Mar 03, 2021 6:15 pm

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361 Views

Last post by fyousefi
Wed Mar 03, 2021 6:15 pm
The parameter covariance information could not be obtained in the factored form. Consider fetching it as a matrix.

Last post by fyousefi « Wed Mar 03, 2021 6:14 pm

by fyousefi » Wed Mar 03, 2021 6:14 pm

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361 Views

Last post by fyousefi
Wed Mar 03, 2021 6:14 pm
In the "getcov(SYS, FORMAT)" command, FORMAT must be ''value'' or ''factors''.

Last post by fyousefi « Wed Mar 03, 2021 6:13 pm

by fyousefi » Wed Mar 03, 2021 6:13 pm

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382 Views

Last post by fyousefi
Wed Mar 03, 2021 6:13 pm
Both "*" and "?" wildcards cannot be specified in the same entry for the algorithm property "FixedParameter".

Last post by fyousefi « Wed Mar 03, 2021 6:01 pm

by fyousefi » Wed Mar 03, 2021 6:01 pm

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374 Views

Last post by fyousefi
Wed Mar 03, 2021 6:01 pm
The length of the "PName" property value must equal the length of the "ParameterVector" property value.

Last post by fyousefi « Wed Mar 03, 2021 6:00 pm

by fyousefi » Wed Mar 03, 2021 6:00 pm

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358 Views

Last post by fyousefi
Wed Mar 03, 2021 6:00 pm
The value of the obsolete property "nk" cannot be set for continuous-time models.

Last post by fyousefi « Wed Mar 03, 2021 6:00 pm

by fyousefi » Wed Mar 03, 2021 6:00 pm

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370 Views

Last post by fyousefi
Wed Mar 03, 2021 6:00 pm
Estimation data has changed. Refreshing State Space Models window...

Last post by fyousefi « Wed Mar 03, 2021 5:59 pm

by fyousefi » Wed Mar 03, 2021 5:59 pm

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391 Views

Last post by fyousefi
Wed Mar 03, 2021 5:59 pm
System Identification app is opening. Please wait...

Last post by fyousefi « Wed Mar 03, 2021 5:58 pm

by fyousefi » Wed Mar 03, 2021 5:58 pm

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389 Views

Last post by fyousefi
Wed Mar 03, 2021 5:58 pm
Model refinement failed. Make sure that initial model is stable and use persistently exciting data.

Last post by fyousefi « Wed Mar 03, 2021 5:57 pm

by fyousefi » Wed Mar 03, 2021 5:57 pm

0 Replies

445 Views

Last post by fyousefi
Wed Mar 03, 2021 5:57 pm
Specified delay must be smaller than the data time span.

Last post by fyousefi « Wed Mar 03, 2021 5:57 pm

by fyousefi » Wed Mar 03, 2021 5:57 pm

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383 Views

Last post by fyousefi
Wed Mar 03, 2021 5:57 pm
The initial model must be a valid linear system with finite-valued parameters.

Last post by fyousefi « Wed Mar 03, 2021 5:55 pm

by fyousefi » Wed Mar 03, 2021 5:55 pm

0 Replies

377 Views

Last post by fyousefi
Wed Mar 03, 2021 5:55 pm
The initial model must be a valid linear system with finite-valued parameters.

Last post by fyousefi « Wed Mar 03, 2021 5:55 pm

by fyousefi » Wed Mar 03, 2021 5:55 pm

0 Replies

354 Views

Last post by fyousefi
Wed Mar 03, 2021 5:55 pm
The value of the tradeoff constant (Lambda) must be a positive real number.

Last post by fyousefi « Wed Mar 03, 2021 5:54 pm

by fyousefi » Wed Mar 03, 2021 5:54 pm

0 Replies

336 Views

Last post by fyousefi
Wed Mar 03, 2021 5:54 pm
The value of the regularization weighting matrix must be a vector of positive real numbers or a positive definite matrix

Last post by fyousefi « Wed Mar 03, 2021 5:54 pm

by fyousefi » Wed Mar 03, 2021 5:54 pm

0 Replies

335 Views

Last post by fyousefi
Wed Mar 03, 2021 5:54 pm
The input delay value must be a nonnegative, real and finite number. For discrete-time models, the value must be an inte

Last post by fyousefi « Wed Mar 03, 2021 5:53 pm

by fyousefi » Wed Mar 03, 2021 5:53 pm

0 Replies

383 Views

Last post by fyousefi
Wed Mar 03, 2021 5:53 pm
Specify the range of orders to test as a vector of positive integers.

Last post by fyousefi « Wed Mar 03, 2021 5:52 pm

by fyousefi » Wed Mar 03, 2021 5:52 pm

0 Replies

326 Views

Last post by fyousefi
Wed Mar 03, 2021 5:52 pm

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