Title :
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
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;
Conference_Titel :
American Control Conference, 2003. Proceedings of the 2003
Print_ISBN :
0-7803-7896-2
DOI :
10.1109/ACC.2003.1240526
