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Type: Artigo de periódico
Title: Pole location control design of an active suspension system with uncertain parameters
Author: Leite, VJS
Peres, PLD
Abstract: This paper addresses the problem of robust control design for an active suspension quarter-car model by means of state feedback gains. Specifically, the design of controllers that assure robust pole location of the closed-loop system inside a circular region on the left-hand side of complex plane is investigated. Three sufficient conditions for the existence of a robust stabilizing state feedback gain are presented as linear matrix inequalities: (i) the quadratic stability based gain; (ii) a recently published condition that uses an augmented space and has been here modified to cope with the pole location specification; (iii) a condition that uses an extended number of equations and yields a parameter-dependent state feedback gain. Unlike other parameter-dependent strategies, neither extensive gridding nor approximations are needed. In the suspension model, the sprung mass, the damper coefficient and the spring constant are considered as uncertain parameters belonging to a known interval (polytope type uncertainty). It is shown that the parameter-dependent gain proposed allows one to impose the closed-loop system pole locations that in some situations cannot be obtained with constant feedback gains.
Subject: active suspension control
linear matrix inequalities
robust control
parameter dependent control
robust pole location
uncertain systems
Country: Inglaterra
Editor: Taylor & Francis Ltd
Citation: Vehicle System Dynamics. Taylor & Francis Ltd, v. 43, n. 8, n. 561, n. 579, 2005.
Rights: fechado
Identifier DOI: 10.1080/0042311042000266702
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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