Rank: 2844 based on 42 downloads (last 30 days) and 2 files submitted
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James Whidborne

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Cranfield University

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12 Nov 2014 System L1-norm Calculate L1-norm of impulse response of continuous-time SISO LTI system Author: James Whidborne control design, norm, l1norm, linear systems 17 2
  • 4.0
4.0 | 2 ratings
29 May 2009 Screenshot LSDPTOOL A graphical user interface for robust control design using McFarlane & Glovers's LSDP Author: James Whidborne robust control, lsdp, hinfinity 25 3
  • 5.0
5.0 | 4 ratings
Comments and Ratings by James Whidborne
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01 May 2013 QCAT Quadratic Programming Control Allocation Toolbox Author: Ola Harkegard

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03 Nov 2014 System L1-norm Calculate L1-norm of impulse response of continuous-time SISO LTI system Author: James Whidborne Ana

Dear James,

Thank you for this upload, it is very useful.

The function seems to work very well for the most of the systems. However, when I try it for some higher order systems (n=24), the returned norm is an imaginary number. When the system is reduced to a smaller order, e.g. n = 10 (by using balreal), the returned norm is a positive number.

Do you have insights on why this happens and how it could be circumvented?

Thank you in advance,

Ana.

03 Oct 2014 System L1-norm Calculate L1-norm of impulse response of continuous-time SISO LTI system Author: James Whidborne Timothy

Seems to work as intended. State-space input is a little inconvenient but easy to work around.

23 Apr 2008 LSDPTOOL A graphical user interface for robust control design using McFarlane & Glovers's LSDP Author: James Whidborne

EXCELLENT work

29 Aug 2005 LSDPTOOL A graphical user interface for robust control design using McFarlane & Glovers's LSDP Author: James Whidborne

Wery good for MIMO systems...

04 Jan 2005 LSDPTOOL A graphical user interface for robust control design using McFarlane & Glovers's LSDP Author: James Whidborne

Very usefull tool because it allows a very
quick 'first shot' design at MIMO problems.

The Glover/MacFarlane procedure is allways
a good starting point, because it provides
you, with very little effort, with a MIMO
controller, which then may serve as a good
starting point for developing a full blown
operational controller.
One suggestion for improvement: I added into
my copy of the S/w the option for the non-optimal solution, which will results
in a proper transfer function.

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