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[Octave-bug-tracker] [bug #42767] Minimal realization might not be corre
From: |
anonymous |
Subject: |
[Octave-bug-tracker] [bug #42767] Minimal realization might not be correct |
Date: |
Mon, 14 Jul 2014 07:26:54 +0000 |
User-agent: |
Mozilla/5.0 (Windows NT 6.3; WOW64; rv:30.0) Gecko/20100101 Firefox/30.0 |
URL:
<http://savannah.gnu.org/bugs/?42767>
Summary: Minimal realization might not be correct
Project: GNU Octave
Submitted by: None
Submitted on: Mon 14 Jul 2014 07:26:53 AM UTC
Category: Octave Forge Package
Severity: 3 - Normal
Priority: 5 - Normal
Item Group: Incorrect Result
Status: None
Assigned to: None
Originator Name: Saul Mtakula
Originator Email: address@hidden
Open/Closed: Open
Discussion Lock: Any
Release: 3.6.4
Operating System: Microsoft Windows
_______________________________________________________
Details:
Using the Control Package (ver 2.4.2) a modified S/KS mixed sensitivity
problem is to be solved for a plant G (see attached file-based on the book by
Skogestad Multivariable Feedback Control sec 13_2). The stacked function to be
optimized is ||W1 S W3; W2 K S W3||hinf. Since this won't fit into the exact
framework for the augw function the augmented plant
P=[W1*W3,-W1*G1;zeros(4,6), W2;W3,-G1] is formed directly with horzcat and
vertcat commands. P is not minimal, but using the minreal command does not
appear to minimize P, leading to a detectability error for A, C2 pair of the
augmented plant. Is there a way to form the augmented plant for this problem
for a successful solution of the h infinity problem?
_______________________________________________________
File Attachments:
-------------------------------------------------------
Date: Mon 14 Jul 2014 07:26:53 AM UTC Name: Sec12_2bug.m Size: 4kB By:
None
<http://savannah.gnu.org/bugs/download.php?file_id=31712>
_______________________________________________________
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