Title :
Constrained H2 control of active suspensions using LMI optimization
Author :
Miaomiao Ma ; Hong Chen
Author_Institution :
Dept. of Control Sci. & Eng., Jilin Univ., Changchun, China
Abstract :
A constrained H2 control scheme for active suspensions with time-domain constraints is suggested. The H2 performance is used to measure ride comfort with white noise and impulse road disturbances. Time-domain hard constraints are captured directly using the concept of invariant ellipsoid. Hence, conflicting control objectives are specified separately in the framework of multi-objective control and solved using LMI optimization. Analysis and simulation results for a 2 DOF quarter-car model show possible improvements on ride comfort, while respecting time-domain hard constraints.
Keywords :
H∞ control; automobiles; linear matrix inequalities; mechanical variables control; optimisation; performance index; state feedback; suspensions (mechanical components); time-domain analysis; white noise; H2 performance; LMI optimization; active suspensions; constrained H2 control; impulse road disturbances; invariant ellipsoid; multiobjective control; quarter-car model; ride comfort; time-domain constraints; time-domain hard constraints; white noise; Analytical models; Constraint optimization; Ellipsoids; Hydrogen; Noise measurement; Road vehicles; Suspensions; Time domain analysis; Wheels; White noise; Active suspensions; H2 performance; LMI optimization; time-domain constraints;
Conference_Titel :
Control Conference, 2006. CCC 2006. Chinese
Conference_Location :
Harbin
Print_ISBN :
7-81077-802-1
DOI :
10.1109/CHICC.2006.280723
