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The second input argument of the "minreal" command must be real valued.

Last post by esmatparast « Tue Mar 09, 2021 10:04 am

by esmatparast » Tue Mar 09, 2021 10:04 am

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499 Views

Last post by esmatparast
Tue Mar 09, 2021 10:04 am
The second, third, and fourth input arguments of the "pade" command must be nonnegative integers.

Last post by esmatparast « Tue Mar 09, 2021 10:03 am

by esmatparast » Tue Mar 09, 2021 10:03 am

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616 Views

Last post by esmatparast
Tue Mar 09, 2021 10:03 am
Pade approximation of delays gives rise to algebraic loops with infinite gain at all frequencies. Try a different approx

Last post by esmatparast « Tue Mar 09, 2021 10:00 am

by esmatparast » Tue Mar 09, 2021 10:00 am

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505 Views

Last post by esmatparast
Tue Mar 09, 2021 10:00 am
In the "pade(SYS,NU,NY,NINT)" command, NU must have as many entries as input channels.

Last post by esmatparast « Tue Mar 09, 2021 9:59 am

by esmatparast » Tue Mar 09, 2021 9:59 am

0 Replies

486 Views

Last post by esmatparast
Tue Mar 09, 2021 9:59 am
Frequency intervals must be less than Nyquist frequency, .

Last post by esmatparast « Tue Mar 09, 2021 9:58 am

by esmatparast » Tue Mar 09, 2021 9:58 am

0 Replies

442 Views

Last post by esmatparast
Tue Mar 09, 2021 9:58 am
The "zoh", "foh", and "impulse" methods cannot be used for improper (non-causal) models.

Last post by esmatparast « Tue Mar 09, 2021 9:56 am

by esmatparast » Tue Mar 09, 2021 9:56 am

0 Replies

936 Views

Last post by esmatparast
Tue Mar 09, 2021 9:56 am
In the expression "M^K", the model M must have the same number of inputs and outputs.

Last post by esmatparast « Tue Mar 09, 2021 9:56 am

by esmatparast » Tue Mar 09, 2021 9:56 am

0 Replies

468 Views

Last post by esmatparast
Tue Mar 09, 2021 9:56 am
The "modsep" command was unable to perform the decomposition because some of the model poles are too close to the region

Last post by esmatparast « Tue Mar 09, 2021 9:55 am

by esmatparast » Tue Mar 09, 2021 9:55 am

0 Replies

513 Views

Last post by esmatparast
Tue Mar 09, 2021 9:55 am
In the "modsep(G,N,REGIONFCN,...)" command, the function REGIONFCN must return region indices between 1 and N.

Last post by esmatparast « Tue Mar 09, 2021 9:54 am

by esmatparast » Tue Mar 09, 2021 9:54 am

0 Replies

469 Views

Last post by esmatparast
Tue Mar 09, 2021 9:54 am
The "matched" method of the command requires a SISO model.

Last post by esmatparast « Tue Mar 09, 2021 9:51 am

by esmatparast » Tue Mar 09, 2021 9:51 am

0 Replies

430 Views

Last post by esmatparast
Tue Mar 09, 2021 9:51 am
The "matched" method of the "d2c" command cannot be used for models with poles or zeros at z=0.

Last post by esmatparast « Tue Mar 09, 2021 9:51 am

by esmatparast » Tue Mar 09, 2021 9:51 am

0 Replies

528 Views

Last post by esmatparast
Tue Mar 09, 2021 9:51 am
The "inv" command requires a model with as many inputs as outputs.

Last post by esmatparast « Tue Mar 09, 2021 9:49 am

by esmatparast » Tue Mar 09, 2021 9:49 am

0 Replies

516 Views

Last post by esmatparast
Tue Mar 09, 2021 9:49 am
Inverse model is noncausal because of delays.

Last post by esmatparast « Tue Mar 09, 2021 9:48 am

by esmatparast » Tue Mar 09, 2021 9:48 am

0 Replies

475 Views

Last post by esmatparast
Tue Mar 09, 2021 9:48 am
Invalid syntax for conversion to . Type "help DynamicSystem/ for valid syntax.

Last post by esmatparast « Tue Mar 09, 2021 9:48 am

by esmatparast » Tue Mar 09, 2021 9:48 am

0 Replies

470 Views

Last post by esmatparast
Tue Mar 09, 2021 9:48 am
The command cannot be used with two output arguments for model arrays. To obtain the initial condition mappings, apply

Last post by esmatparast « Tue Mar 09, 2021 9:47 am

by esmatparast » Tue Mar 09, 2021 9:47 am

0 Replies

491 Views

Last post by esmatparast
Tue Mar 09, 2021 9:47 am
The option of the command must be set to a two-column matrix of non-negative real numbers.

Last post by esmatparast « Tue Mar 09, 2021 9:47 am

by esmatparast » Tue Mar 09, 2021 9:47 am

0 Replies

450 Views

Last post by esmatparast
Tue Mar 09, 2021 9:47 am
Gramians cannot be computed for models with unstable dynamics.

Last post by esmatparast « Tue Mar 09, 2021 9:46 am

by esmatparast » Tue Mar 09, 2021 9:46 am

0 Replies

474 Views

Last post by esmatparast
Tue Mar 09, 2021 9:46 am
In the "fselect(SYS,INDEX)" command, INDEX must be a vector of monotonically increasing positive integers.

Last post by esmatparast « Tue Mar 09, 2021 9:44 am

by esmatparast » Tue Mar 09, 2021 9:44 am

0 Replies

554 Views

Last post by esmatparast
Tue Mar 09, 2021 9:44 am
Some entries in the second input argument of the "fselect" command exceed the number of frequency points.

Last post by esmatparast « Tue Mar 09, 2021 9:44 am

by esmatparast » Tue Mar 09, 2021 9:44 am

0 Replies

420 Views

Last post by esmatparast
Tue Mar 09, 2021 9:44 am
In "exp(M*s)", M must be real and have negative or zero entries for causality.

Last post by esmatparast « Tue Mar 09, 2021 9:43 am

by esmatparast » Tue Mar 09, 2021 9:43 am

0 Replies

765 Views

Last post by esmatparast
Tue Mar 09, 2021 9:43 am
When converting models to the FRD representation, the command requires either two or three input arguments. Type "help

Last post by esmatparast « Tue Mar 09, 2021 9:43 am

by esmatparast » Tue Mar 09, 2021 9:43 am

0 Replies

506 Views

Last post by esmatparast
Tue Mar 09, 2021 9:43 am
One or more fast modes could not be separated from the slow modes. To force separation, increase the absolute or relativ

Last post by esmatparast « Tue Mar 09, 2021 9:42 am

by esmatparast » Tue Mar 09, 2021 9:42 am

0 Replies

521 Views

Last post by esmatparast
Tue Mar 09, 2021 9:42 am
The input argument of the "exp" command must be a transfer function of the form -M*s.

Last post by esmatparast « Tue Mar 09, 2021 9:37 am

by esmatparast » Tue Mar 09, 2021 9:37 am

0 Replies

417 Views

Last post by esmatparast
Tue Mar 09, 2021 9:37 am
The "exp" command can only be used for models of class "zpk" and "tf".

Last post by esmatparast « Tue Mar 09, 2021 9:37 am

by esmatparast » Tue Mar 09, 2021 9:37 am

0 Replies

548 Views

Last post by esmatparast
Tue Mar 09, 2021 9:37 am
Use the "isproper" command to first consolidate the set of algebraic state variables.

Last post by esmatparast « Tue Mar 09, 2021 9:36 am

by esmatparast » Tue Mar 09, 2021 9:36 am

0 Replies

591 Views

Last post by esmatparast
Tue Mar 09, 2021 9:36 am

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