Decentralized variable structure control for active suspensions based on a full-car model

Author

Park, Jong H. ; Kim, Young S.

Author_Institution

Sch. of Mech. Eng., Hanyang Univ., Seoul, South Korea

Volume

1

fYear

1998

fDate

1-4 Sep 1998

Firstpage

383

Abstract

A decentralized variable structure controller (DVSC) is designed for active suspensions of vehicles based on a 7-degree-of-freedom full-car model. Its nominal stability and stability robustness to parameter variations are assured through stability analysis. The performance of the DVSC is compared with that of a LQR controller in computer simulations. From the simulations, it is found that active suspensions with the DVSC reduce the acceleration of the sprung mass in the heaving, rolling, and pitching directions when the car is driven on a normal road or through an unequal bump. The suspension stroke and road holding capability are also compared under the assumption of equal power consumption

Keywords

automobiles; control system analysis; decentralised control; robust control; variable structure systems; vibration control; 7-degree-of-freedom full-car model; LQR controller; active suspensions; decentralized variable structure control; full-car model; heaving; nominal stability; pitching; road holding capability; rolling; stability analysis; stability robustness; suspension stroke; Acceleration; Actuators; Computer simulation; Mechanical variables control; Roads; Robust stability; Sliding mode control; Stability analysis; Suspensions; Vehicles;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Applications, 1998. Proceedings of the 1998 IEEE International Conference on

Conference_Location

Trieste

Print_ISBN

0-7803-4104-X

Type

conf

DOI

10.1109/CCA.1998.728460

Filename

728460