patchGNU Octave - Patches: patch #9179, [octave forge] (control) dcgain.m


patch #9179: [octave forge] (control) dcgain.m

Submitted by:  None
Submitted on:  Wed 30 Nov 2016 04:29:04 PM UTC  
Category:  Forge : new function Priority:  5 - Normal
Status:  Done Privacy:  Public
Assigned to:  None Originator Email:  -email is unavailable-
Open/Closed:  Closed

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Fri 30 Mar 2018 08:05:13 AM UTC, comment #4: 

I added the documentation and tests. This can be closed.

Alexander Wilms <alexanderw>
Fri 30 Mar 2018 05:50:05 AM UTC, comment #3: 

Should this be closed as "won't do" since the control package already has @lti/dcgain.m?

Mike Miller <mtmiller>
Project Administrator
Fri 16 Feb 2018 04:11:06 PM UTC, comment #2: 

There's already

The list of missing functions needs to be updated. Could the only implementation of dcgain automatically be called when no arguments have been supplied (which would call print_usage)?

The existing implementation could reuse the help text and tests of the patch, though.

Alexander Wilms <alexanderw>
Sun 01 Jan 2017 07:52:03 PM UTC, comment #1: 

Thank you for the contribution.

I think the documentation is misformatted. Check to see if it all shows up when you type `help dcgain`.

Also, could you add some unit tests to help users verify that the function works?

Nir Krakauer <nir_krakauer>
Wed 30 Nov 2016 04:29:04 PM UTC, original submission:  

Implements the dcgain function for the control toolbox.

## Compute the DC gain k of a linear time invariant (LTI) system
## Transfer function for a continuous state space system (A,B,C,D)
## G(s) = C * inv(s*I - A) * B + D
## DC Gain: evaluate G(s) as s -> 0
## k = C * inv(-A) * B + D
## Transfer function for a discrete state space system (A,B,C,D,T)
## G(z) = C * inv(z*I - A) * B + D
## DC Gain: evaluate G(z) as z -> 1
## k = C * inv(I-A) * B + D



(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attach Files:

Attached Files
file #39358:  dcgain.m added by None (2KiB - application/octet-stream - Apologies for the error in formatting the help function. This is now corrected in the attached new version, which also contains three unit tests to confirm correct operation. Geraint)
file #39111:  dcgain.m added by None (2KiB - text/x-objcsrc)


Depends on the following items: None found

Items that depend on this one: None found


Carbon-Copy List
  • -email is unavailable- added by mtmiller (Posted a comment)
  • -email is unavailable- added by alexanderw (Posted a comment)
  • -email is unavailable- added by nir_krakauer (Posted a comment)
  • -email is unavailable- added by None (Submitted the item)

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    Follow 7 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2018-03-30 mtmiller StatusWont Do => Done
    2018-03-30 mtmiller StatusNeed Info => Wont Do
        Open/ClosedOpen => Closed
    2018-03-30 mtmiller StatusNone => Need Info
        Summarydcgain.m: control toolbox => [octave forge] (control) dcgain.m
    2017-01-03 None Attached File- => Added dcgain.m, #39358
    2016-11-30 None Attached File- => Added dcgain.m, #39111

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