Robotics System Toolbox

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The "lsim" and "lsimplot" commands cannot plot the time response of models with no inputs.

Last post by esmatparast « Tue Mar 02, 2021 1:23 pm

by esmatparast » Tue Mar 02, 2021 1:23 pm

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Last post by esmatparast
Tue Mar 02, 2021 1:23 pm
The input arguments "U" and "X0" of the "lsimplot" command must be real valued.

Last post by esmatparast « Tue Mar 02, 2021 1:23 pm

by esmatparast » Tue Mar 02, 2021 1:23 pm

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479 Views

Last post by esmatparast
Tue Mar 02, 2021 1:23 pm
Nonzero initial conditions not allowed for models with internal delays.

Last post by esmatparast « Tue Mar 02, 2021 1:22 pm

by esmatparast » Tue Mar 02, 2021 1:22 pm

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439 Views

Last post by esmatparast
Tue Mar 02, 2021 1:22 pm
The "lsim" command requires at least three input arguments when used with output arguments. Type "help lsim" for more in

Last post by esmatparast « Tue Mar 02, 2021 1:22 pm

by esmatparast » Tue Mar 02, 2021 1:22 pm

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445 Views

Last post by esmatparast
Tue Mar 02, 2021 1:22 pm
When simulating the response of multiple linear systems, all models must have the same number of inputs.

Last post by esmatparast « Tue Mar 02, 2021 1:21 pm

by esmatparast » Tue Mar 02, 2021 1:21 pm

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467 Views

Last post by esmatparast
Tue Mar 02, 2021 1:21 pm
The "isstable" command cannot assess the stability of models with internal delays. Use the "step" or "impulse" command t

Last post by esmatparast « Tue Mar 02, 2021 1:21 pm

by esmatparast » Tue Mar 02, 2021 1:21 pm

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509 Views

Last post by esmatparast
Tue Mar 02, 2021 1:21 pm
The "isproper" command operates on a single model when used with two output arguments.

Last post by esmatparast « Tue Mar 02, 2021 1:21 pm

by esmatparast » Tue Mar 02, 2021 1:21 pm

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451 Views

Last post by esmatparast
Tue Mar 02, 2021 1:21 pm
The input argument "X0" of the "initialplot" command must be a vector of real numbers.

Last post by esmatparast « Tue Mar 02, 2021 1:20 pm

by esmatparast » Tue Mar 02, 2021 1:20 pm

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411 Views

Last post by esmatparast
Tue Mar 02, 2021 1:20 pm
The first and second input arguments of the "imargin" command must be matrices.

Last post by esmatparast « Tue Mar 02, 2021 1:20 pm

by esmatparast » Tue Mar 02, 2021 1:20 pm

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427 Views

Last post by esmatparast
Tue Mar 02, 2021 1:20 pm
Hankel singular values are evaluated for zero input and output delays. Use "pade" to better approximate the true Hankel

Last post by esmatparast « Tue Mar 02, 2021 1:19 pm

by esmatparast » Tue Mar 02, 2021 1:19 pm

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433 Views

Last post by esmatparast
Tue Mar 02, 2021 1:19 pm
Some systems have infinite R-index at all frequencies.

Last post by esmatparast « Tue Mar 02, 2021 1:18 pm

by esmatparast » Tue Mar 02, 2021 1:18 pm

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455 Views

Last post by esmatparast
Tue Mar 02, 2021 1:18 pm
The R-index vs. frequency only makes sense when the sector matrix Q has as many negative eigenvalues as inputs in H(s).

Last post by esmatparast « Tue Mar 02, 2021 1:09 pm

by esmatparast » Tue Mar 02, 2021 1:09 pm

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449 Views

Last post by esmatparast
Tue Mar 02, 2021 1:09 pm
All systems must have the same number of outputs.

Last post by esmatparast « Tue Mar 02, 2021 1:08 pm

by esmatparast » Tue Mar 02, 2021 1:08 pm

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442 Views

Last post by esmatparast
Tue Mar 02, 2021 1:08 pm
Cannot compute directional index from frequency-domain data.

Last post by esmatparast « Tue Mar 02, 2021 1:08 pm

by esmatparast » Tue Mar 02, 2021 1:08 pm

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439 Views

Last post by esmatparast
Tue Mar 02, 2021 1:08 pm
To compute the R-index from frequency-domain data, Q must have as many negative eigenvalues as inputs in H.

Last post by esmatparast « Tue Mar 02, 2021 1:08 pm

by esmatparast » Tue Mar 02, 2021 1:08 pm

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445 Views

Last post by esmatparast
Tue Mar 02, 2021 1:08 pm
Cannot compute band-limited directional index.

Last post by esmatparast « Tue Mar 02, 2021 1:08 pm

by esmatparast » Tue Mar 02, 2021 1:08 pm

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428 Views

Last post by esmatparast
Tue Mar 02, 2021 1:08 pm
To compute the R-index on a frequency band, Q must have as many negative eigenvalues as inputs in H.

Last post by esmatparast « Tue Mar 02, 2021 1:07 pm

by esmatparast » Tue Mar 02, 2021 1:07 pm

0 Replies

490 Views

Last post by esmatparast
Tue Mar 02, 2021 1:07 pm
Sample time or time unit mismatch between system H and frequency-dependent sector matrix Q.

Last post by esmatparast « Tue Mar 02, 2021 1:00 pm

by esmatparast » Tue Mar 02, 2021 1:00 pm

0 Replies

439 Views

Last post by esmatparast
Tue Mar 02, 2021 1:00 pm
The sector geometry must be specified as a symmetric matrix or a para-Hermitian LTI model.

Last post by esmatparast « Tue Mar 02, 2021 12:59 pm

by esmatparast » Tue Mar 02, 2021 12:59 pm

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424 Views

Last post by esmatparast
Tue Mar 02, 2021 12:59 pm
Frequency-dependent sector matrix Q(s) must have a state-space representation.

Last post by esmatparast « Tue Mar 02, 2021 12:59 pm

by esmatparast » Tue Mar 02, 2021 12:59 pm

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435 Views

Last post by esmatparast
Tue Mar 02, 2021 12:59 pm
The frequency response H(s) must have full rank at all but a finite number of frequencies.

Last post by esmatparast « Tue Mar 02, 2021 12:58 pm

by esmatparast » Tue Mar 02, 2021 12:58 pm

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427 Views

Last post by esmatparast
Tue Mar 02, 2021 12:58 pm
Not supported for continuous-time models with delays. Use the "pade" command to approximate delays.

Last post by esmatparast « Tue Mar 02, 2021 12:58 pm

by esmatparast » Tue Mar 02, 2021 12:58 pm

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432 Views

Last post by esmatparast
Tue Mar 02, 2021 12:58 pm
The matrix dQ must be nonnegative definite.

Last post by esmatparast « Tue Mar 02, 2021 12:57 pm

by esmatparast » Tue Mar 02, 2021 12:57 pm

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421 Views

Last post by esmatparast
Tue Mar 02, 2021 12:57 pm
Cannot compute directional index with frequency-dependent Q matrix.

Last post by esmatparast « Tue Mar 02, 2021 12:57 pm

by esmatparast » Tue Mar 02, 2021 12:57 pm

0 Replies

413 Views

Last post by esmatparast
Tue Mar 02, 2021 12:57 pm
The direction dQ must be a numeric symmetric matrix with {number,integer} rows.

Last post by esmatparast « Tue Mar 02, 2021 12:56 pm

by esmatparast » Tue Mar 02, 2021 12:56 pm

0 Replies

426 Views

Last post by esmatparast
Tue Mar 02, 2021 12:56 pm

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