DESIGN OF ACTIVE SUSPENSION AND ELECTRONIC STABILITY PROGRAM FOR ROLLOVER PREVENTION

YIM, S.; PARK, Y.; YI, K.

doi:2010.11.2.147

International Journal of Automotive Technology > Volume 11(2); 2010 > Article

Automobile Chassis & Vehicle Dynamic

International Journal of Automotive Technology 2010;11(2): 147-153.
doi: https://doi.org/10.1007/s12239-010-0020-6

DESIGN OF ACTIVE SUSPENSION AND ELECTRONIC STABILITY PROGRAM FOR ROLLOVER PREVENTION

S. YIM¹, Y. PARK², K. YI¹

¹Seoul National University
²KAIST

ABSTRACT

This paper presents a method for the design of a controller for rollover prevention using active suspension and an electronic stability program (ESP). Active suspension is designed with linear quadratic static output feedback control methodology to attenuate the effect of lateral acceleration on the roll angle and suspension stroke via control of the suspension stroke and tire deflection of the vehicle. However, this approach has a drawback in the loss of maneuverability because the active suspension for rollover prevention produces in vehicles an extreme over-steer characteristic. To overcome this drawback of the active suspension based method, ESP is designed. Through simulations, the proposed method is shown to be effective in preventing rollover.

Key Words: Rollover prevention, Active suspension, ESP, Optimal static output feedback control, Maneuverability

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