Static Output-Feedback Control for Vehicle Suspensions: A Single-Step Linear Matrix Inequality Approach

In this paper, a new strategy to design static output-feedback controllers for a class of vehicle suspension systems is presented. A theoretical background on recent advances in output-feedback control is first provided, which makes possible an effective synthesis of static output-feedback controlle...

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Bibliographic Details
Published in:Mathematical problems in engineering Vol. 2013; no. 2013; pp. 1 - 12
Main Authors: Karimi, Hamid Reza, Rossell, Josep M., Palacios-Quiñonero, Francisco, Rubió-Massegú, Josep
Format: Journal Article Publication
Language:English
Published: Cairo, Egypt Hindawi Publishing Corporation 01.01.2013
John Wiley & Sons, Inc
Subjects:
93 Systems Theory; Control
Algorithms
Applied mathematics
Automàtica i control
Classificació AMS
Computer simulation
Control systems
Control theory
Controllers
Design
Design engineering
Engineering
Feedback
Feedback control
Feedback control systems
H-infinity control
Informàtica
Linear matrix inequalities
Matemàtiques i estadística
Mathematical analysis
Mathematical models
Mathematical problems
Matrius (Matemàtica)
Matrix inequalities
Matrix methods
Output feedback
Ressorts i suspensió
Sistemes de control per retroacció
Springs and suspension
Suspension systems
Suspension systems (vehicles)
Vehicles
Àrees temàtiques de la UPC
ISSN:1024-123X, 1563-5147
Online Access:Get full text
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Summary:In this paper, a new strategy to design static output-feedback controllers for a class of vehicle suspension systems is presented. A theoretical background on recent advances in output-feedback control is first provided, which makes possible an effective synthesis of static output-feedback controllers by solving a single linear matrix inequality optimization problem. Next, a simplified model of a quarter-car suspension system is proposed, taking the ride comfort, suspension stroke, road holding ability, and control effort as the main performance criteria in the vehicle suspension design. The new approach is then used to design a static output-feedback H∞ controller that only uses the suspension deflection and the sprung mass velocity as feedback information. Numerical simulations indicate that, despite the restricted feedback information, this static output-feedback H∞ controller exhibits an excellent behavior in terms of both frequency and time responses, when compared with the corresponding state-feedback H∞ controller.
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ISSN:1024-123X
1563-5147
DOI:10.1155/2013/907056