Title :
Robust control via convex approximation of the stability region
Author_Institution :
Inst. of Cybern., Tallinn, Estonia
Abstract :
A Schur invariant transformation on the coefficient space of polynomials is used to obtain a sufficient stability condition in terms of simplexes. The order of polynomials could be increased step by step starting from some low order stable simplex. A stability measure is introduced as a minimal distance between the extreme points of interval system and the surface of the stable simplex. A straightforward robust controller design procedure is proposed for interval plants. Some low order examples are given.
Keywords :
control system synthesis; polynomial approximation; robust control; stability criteria; Schur invariant transformation; convex approximation; low order stable simplex; polynomial coefficient space; stability measure; stability region; straight-forward robust controller design procedure; sufficient stability condition; Aerospace electronics; Approximation methods; Closed loop systems; Polynomials; Robust control; Robustness; Tin; discrete-time systems; robust control; robust stability;
Conference_Titel :
Control Conference (ECC), 1997 European
Conference_Location :
Brussels
Print_ISBN :
978-3-9524269-0-6
