System Identification Toolbox

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Systems with more zeros than poles cannot be converted into IDSS models.

Last post by fyousefi « Sat Mar 06, 2021 2:28 pm

by fyousefi » Sat Mar 06, 2021 2:28 pm

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Last post by fyousefi
Sat Mar 06, 2021 2:28 pm
Negative frequencies were removed because they are not allowed for this type of FRD model.

Last post by fyousefi « Sat Mar 06, 2021 2:27 pm

by fyousefi » Sat Mar 06, 2021 2:27 pm

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816 Views

Last post by fyousefi
Sat Mar 06, 2021 2:27 pm
In the "NOISECNV(SYS,NOISE)" command, the systems in the array SYS cannot contain both zero and nonzero values for the "

Last post by fyousefi « Sat Mar 06, 2021 2:26 pm

by fyousefi » Sat Mar 06, 2021 2:26 pm

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904 Views

Last post by fyousefi
Sat Mar 06, 2021 2:26 pm
In the "NOISECNV(SYS,NOISE)" command, the systems in the array SYS cannot contain both zero and nonzero values for noise

Last post by fyousefi « Sat Mar 06, 2021 2:26 pm

by fyousefi » Sat Mar 06, 2021 2:26 pm

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1078 Views

Last post by fyousefi
Sat Mar 06, 2021 2:26 pm
Noise transfer functions must have same number of poles and zeros.

Last post by fyousefi « Sat Mar 06, 2021 2:25 pm

by fyousefi » Sat Mar 06, 2021 2:25 pm

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842 Views

Last post by fyousefi
Sat Mar 06, 2021 2:25 pm
In the command, the value of the "NOISE" input argument must be ''innovations'' or ''normalize''.

Last post by fyousefi « Sat Mar 06, 2021 2:25 pm

by fyousefi » Sat Mar 06, 2021 2:25 pm

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950 Views

Last post by fyousefi
Sat Mar 06, 2021 2:25 pm
You cannot resample a grey box model of FunctionType ''c'' using the "d2d" command. Convert the model into idss format f

Last post by fyousefi « Sat Mar 06, 2021 2:24 pm

by fyousefi » Sat Mar 06, 2021 2:24 pm

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1088 Views

Last post by fyousefi
Sat Mar 06, 2021 2:24 pm
Grey box models using FunctionType=''c'' cannot be discretized. Convert the model into idss format first.

Last post by fyousefi « Sat Mar 06, 2021 2:24 pm

by fyousefi » Sat Mar 06, 2021 2:24 pm

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902 Views

Last post by fyousefi
Sat Mar 06, 2021 2:24 pm
Process models cannot be discretized. Convert the model into idtf or idpoly format first.

Last post by fyousefi « Sat Mar 06, 2021 2:24 pm

by fyousefi » Sat Mar 06, 2021 2:24 pm

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824 Views

Last post by fyousefi
Sat Mar 06, 2021 2:24 pm
Models containing NaN parameter values cannot be converted into models.

Last post by fyousefi « Sat Mar 06, 2021 2:23 pm

by fyousefi » Sat Mar 06, 2021 2:23 pm

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778 Views

Last post by fyousefi
Sat Mar 06, 2021 2:23 pm
Variables of class cannot be converted to polynomial model form.

Last post by fyousefi « Sat Mar 06, 2021 2:23 pm

by fyousefi » Sat Mar 06, 2021 2:23 pm

0 Replies

882 Views

Last post by fyousefi
Sat Mar 06, 2021 2:23 pm
Variables of class cannot be converted to identified transfer function form.

Last post by fyousefi « Sat Mar 06, 2021 2:21 pm

by fyousefi » Sat Mar 06, 2021 2:21 pm

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809 Views

Last post by fyousefi
Sat Mar 06, 2021 2:21 pm
Pade approximation is not supported for models.

Last post by fyousefi « Sat Mar 06, 2021 2:21 pm

by fyousefi » Sat Mar 06, 2021 2:21 pm

0 Replies

809 Views

Last post by fyousefi
Sat Mar 06, 2021 2:21 pm
Elimination of delays is not supported for models.

Last post by fyousefi « Sat Mar 06, 2021 2:20 pm

by fyousefi » Sat Mar 06, 2021 2:20 pm

0 Replies

979 Views

Last post by fyousefi
Sat Mar 06, 2021 2:20 pm
Negative delays cannot be eliminated from the model.

Last post by fyousefi « Sat Mar 06, 2021 2:20 pm

by fyousefi » Sat Mar 06, 2021 2:20 pm

0 Replies

826 Views

Last post by fyousefi
Sat Mar 06, 2021 2:20 pm
Pade approximation is not supported for models containing negative delays.

Last post by fyousefi « Sat Mar 06, 2021 2:19 pm

by fyousefi » Sat Mar 06, 2021 2:19 pm

0 Replies

790 Views

Last post by fyousefi
Sat Mar 06, 2021 2:19 pm
The model does not allow negative input delays. Negative delays will be reset to zero.

Last post by fyousefi « Sat Mar 06, 2021 2:19 pm

by fyousefi » Sat Mar 06, 2021 2:19 pm

0 Replies

976 Views

Last post by fyousefi
Sat Mar 06, 2021 2:19 pm
An model array cannot be converted into an idarx model. Convert each array element individually.

Last post by fyousefi « Sat Mar 06, 2021 2:18 pm

by fyousefi » Sat Mar 06, 2021 2:18 pm

0 Replies

901 Views

Last post by fyousefi
Sat Mar 06, 2021 2:18 pm
The specified LTI model has more zeros than poles. The excess zeros will appear as negative input delays in the resultin

Last post by fyousefi « Sat Mar 06, 2021 2:18 pm

by fyousefi » Sat Mar 06, 2021 2:18 pm

0 Replies

948 Views

Last post by fyousefi
Sat Mar 06, 2021 2:18 pm
For converting input channels into noise channels, the system must have at least as many inputs as there are outputs.

Last post by fyousefi « Sat Mar 06, 2021 2:17 pm

by fyousefi » Sat Mar 06, 2021 2:17 pm

0 Replies

891 Views

Last post by fyousefi
Sat Mar 06, 2021 2:17 pm
For treating some input channels as noise channels, the system must have more inputs than outputs.

Last post by fyousefi « Sat Mar 06, 2021 2:17 pm

by fyousefi » Sat Mar 06, 2021 2:17 pm

0 Replies

944 Views

Last post by fyousefi
Sat Mar 06, 2021 2:17 pm
Frequency Response Data cannot be converted into models. Use the command to estimate a model using the FRD obj

Last post by fyousefi « Sat Mar 06, 2021 2:16 pm

by fyousefi » Sat Mar 06, 2021 2:16 pm

0 Replies

865 Views

Last post by fyousefi
Sat Mar 06, 2021 2:16 pm
The last { number,integer} input channels of the input model will be ignored since an idtf model has no noise component

Last post by fyousefi « Sat Mar 06, 2021 2:15 pm

by fyousefi » Sat Mar 06, 2021 2:15 pm

0 Replies

853 Views

Last post by fyousefi
Sat Mar 06, 2021 2:15 pm
In the "IDTF(SYS, TYPE)" command, TYPE must be ''measured'' or ''split''.

Last post by fyousefi « Sat Mar 06, 2021 2:14 pm

by fyousefi » Sat Mar 06, 2021 2:14 pm

0 Replies

820 Views

Last post by fyousefi
Sat Mar 06, 2021 2:14 pm
Noise input groups would not convert to noise channels of model. Use the ''split'' input argument for conversion int

Last post by fyousefi « Sat Mar 06, 2021 2:14 pm

by fyousefi » Sat Mar 06, 2021 2:14 pm

0 Replies

856 Views

Last post by fyousefi
Sat Mar 06, 2021 2:14 pm

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