Active suspension design based on linear-matrix inequalities and fixed-order controllers

Author

Türkay, Semiha ; Akçay, Hüseyin

Author_Institution

Dept. of Electr. & Electron. Eng., Anadolu Univ., Eskisehir, Turkey

fYear

2011

fDate

20-23 June 2011

Firstpage

748

Lastpage

753

Abstract

In this paper, influence of tire damping on multi objective control of quarter-car suspensions excited by random road disturbances is studied. The active suspension design problem is first formulated as a mixed H₂/H_∞ synthesis problem and this convex problem is solved using linear matrix inequalities. Next, the control design problem is re-formulated as a non-convex and non-smooth optimization problem with fixed order controllers and solved by using the recently developed HIFOO toolbox. Parametric studies show that tire damping can seriously impact closed-loop performance of actively controlled quarter-car models.

Keywords

automobiles; closed loop systems; control system synthesis; convex programming; damping; linear matrix inequalities; road safety; suspensions (mechanical components); tyres; vehicle dynamics; HIFOO toolbox; active suspension design; closed-loop performance; control design problem; convex problem; fixed order controller; linear matrix inequality; mixed synthesis problem; multiobjective control; nonconvex optimization problem; nonsmooth optimization problem; quarter-car model control; quarter-car suspension; random road disturbance; tire damping; Acceleration; Damping; Optimization; Roads; Suspensions; Tires; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Control & Automation (MED), 2011 19th Mediterranean Conference on

Conference_Location

Corfu

Print_ISBN

978-1-4577-0124-5

Type

conf

DOI

10.1109/MED.2011.5983116

Filename

5983116