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

Volume

1

fYear

1997

fDate

4-6 Jun 1997

Firstpage

714

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;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 1997. Proceedings of the 1997

Conference_Location

Albuquerque, NM

ISSN

0743-1619

Print_ISBN

0-7803-3832-4

Type

conf

DOI

10.1109/ACC.1997.611894

Filename

611894