A multi-objective control design for active suspensions with hard constraints

Author

Chen, H. ; Sun, P.-Y. ; Guo, K.-H.

Author_Institution

Dept. of Control Sci., Jilin Univ., Changchun, China

Volume

5

fYear

2003

fDate

4-6 June 2003

Firstpage

4371

Abstract

The generalized H₂ norm is adapted to capture requirements of satisfying time-domain hard constraints such as suspension stroke limitation, road holding constraint and actuator saturation. The peak amplitudes can then be bounded directly. The H₂ norm is used as a measure for ride comfort. This way, conflicting control objectives are specified independently in the framework of multi-objective control and solved using LMI optimization. Simulation results for a 2 DOF quarter-car model confirm a significant improvement on robust ride comfort, while it is guaranteed that suspension stroke and active force remain within given bounds and the wheel is in firm control to road, for all uncertainties considered.

Keywords

actuators; automobiles; control system synthesis; linear matrix inequalities; optimisation; DOF quarter-car model; H₂ norm; LMI optimization; active suspensions; actuator saturation; multiobjective control design; ride comfort measure; road holding constraint; suspension stroke limitations; time-domain hard constraints; Control design; Roads; Robustness; Suspensions; Time domain analysis; Tires; Vehicle dynamics; Vehicle safety; Vibrations; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2003. Proceedings of the 2003

ISSN

0743-1619

Print_ISBN

0-7803-7896-2

Type

conf

DOI

10.1109/ACC.2003.1240526

Filename

1240526