From: Walter Driedger <driedgew@cadvision.com>
Subject: Re: dx/dt = (A + \Delta A(t))x + (B + \Delta B(t))u
Date: Fri, 02 Feb 2001 16:15:54 -0700
Newsgroups: sci.engr.control,sci.math
Summary: Designing feedback control systems

Allco:

Are you speaking real world or school talk.  If the former, try
standard industrial control, PID.  EVERY process industry control
function is non-linear, time variable, ec.  We can handle it.

Walter

allco@my-deja.com wrote:
> 
> Hi!
> 
> What are the standard methods for design of stabilizing feedback control
> u(x) for the following linear system with uncertain time varying
> parameters?
> 
> dx/dt = (A + \Delta A(t))x + (B + \Delta B(t))u
> 
> A,B,\Delta A(t),\Delta B(t) are matrices. A,B - constant and known,
> \Delta A(t),\Delta B(t) - time varying, unknown, componentwise bounded
> by
> known values, A_low <= \Delta A(t) <= A_up, B_low <= \Delta B(t) <= B_up
> 
> Please help! It would be great if you could give a method together with
> in your opinion good references (books, papers ...) on it.
> 
> Thank you very much
> 
> Allco
> 
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