Title :
Study on mixed H∞/h2 control for enhancing the tracking performance of EPS
Author :
Zhao, Wanzhong ; Shi, Guobiao ; Lin, Yi
Author_Institution :
Beijing Inst. of Technol., Beijing
Abstract :
According to the operating mode of pure electric power bus, the recirculating ball-type EPS (Electric Power Steering System) is designed and its dynamic model is established by the optimum design. Because of the existence of system uncertainty model, disturbance signals, sensor noises and the demand of system dynamic performance, the mixed H∞/H2 controller is designed for the EPS. The simulation results show that the EPS with the mixed H∞/H2 controller could attenuate the random noises and disturbances and track the boost curve well, so it has improved the system´s robust performance and dynamic performance. At last, the bench test is experimented to verify the simulation results and it shows that the mixed H2/H∞ controller for EPS is feasible, and it could improve the steering and handling performance and provide satisfied road feeling for the drivers.
Keywords :
Hinfin control; automobiles; random noise; steering systems; uncertain systems; disturbance signals; electric power bus; electric power steering system; mixed Hinfin/H2 control; random noises; sensor noises; system uncertainty model; tracking performance; Control systems; Hydrogen; Noise robustness; Power system modeling; Roads; Robust control; Sensor systems; Signal design; Uncertainty; Vehicle dynamics; Electrical power steering system(EPS); Mixed H·∞/H2; Recirculating ball-type;
Conference_Titel :
Automation and Logistics, 2007 IEEE International Conference on
Conference_Location :
Jinan
Print_ISBN :
978-1-4244-1531-1
DOI :
10.1109/ICAL.2007.4338640
