Title :
Road-adaptive nonlinear design of active suspensions
Author :
Lin, Jung-Shan ; Kanellakopoulos, Ioannis
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
Abstract :
Recently (1995) we proposed a novel nonlinear control design for active suspensions, which features a filter whose bandwidth is a nonlinear function of suspension travel; this filter results in an improved tradeoff between ride comfort and rattlespace usage. In this paper we augment this controller with a new road-adaptive algorithm which continuously monitors suspension travel and adjusts online the shape of the filter nonlinearity in response to different road profiles. This adaptive design realizes the true potential of active suspensions, which is their ability to yield better performance over a much wider range of road surfaces than passive suspensions
Keywords :
adaptive control; automobiles; filtering theory; monitoring; nonlinear control systems; nonlinear filters; vibration control; active suspensions; rattlespace usage; ride comfort; road profiles; road surfaces; road-adaptive nonlinear design; suspension travel; Acceleration; Backstepping; Band pass filters; Control design; Energy consumption; Roads; Sea surface; Shape control; Suspensions; Vehicle driving;
Conference_Titel :
American Control Conference, 1997. Proceedings of the 1997
Conference_Location :
Albuquerque, NM
Print_ISBN :
0-7803-3832-4
DOI :
10.1109/ACC.1997.611894
