Technical Paper
Improvement of Vehicle Ride Performance Using a Switchable Damper Suspension System
2007-04-16
2007-01-0580
One of the various active suspensions, which have been shown to have considerable practical potential, is a switchable damper suspension system. However, previous studies of this system have concentrated on the improvements obtainable for certain fixed road roughness, fixed forward speed and fixed vehicle parameters using a quarter vehicle model. This paper is concerned with an analytical study of a four-degrees of freedom vehicle incorporating a passive and a switchable damper suspension system. A half vehicle model of the switchable damper suspension system with adaptive control strategy is developed. The controller provides a set of gains over different operating conditions. The vibrations of the half vehicle are induced by random road inputs at the front and rear wheels. An investigation of the influence of switchable damper suspension system on vehicle ride quality control is performed on this model and compared with the conventional passive suspension.