Nonlinear active suspension with preview

Author

Karlsson, NiMas ; Dahleh, Mohammed ; Hrovat, Davor

Author_Institution

Dept. of Mech. & Environ. Eng., California Univ., Santa Barbara, CA, USA

Volume

4

fYear

2001

fDate

2001

Firstpage

2640

Abstract

Optimal control with preview is investigated for a quarter-car, two-degree-of-freedom vehicle model, with a quadratic and quartic cost function. By solving a set of Euler-Lagrange equations, an optimization algorithm is derived to find the optimal control assuming complete knowledge of the disturbance (infinite time preview). The results give us merely an upper bound on the performance when using preview control, but suggest that nonlinear finite time preview controllers can contribute to substantial improvements in vehicle ride and/or handling performance

Keywords

automobiles; damping; nonlinear control systems; optimal control; predictive control; stability; vibration control; Euler-Lagrange equations; nonlinear active suspension; nonlinear finite time preview controllers; optimal control; optimization; quadratic cost function; quarter-car 2-DOF vehicle model; quartic cost function; Acceleration; Axles; Nonlinear equations; Optimal control; Performance analysis; Road vehicles; Sensor systems; Springs; Tires; Wheels;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 2001. Proceedings of the 2001

Conference_Location

Arlington, VA

ISSN

0743-1619

Print_ISBN

0-7803-6495-3

Type

conf

DOI

10.1109/ACC.2001.946273

Filename

946273