Abstract
This paper proposes a novel type of semi-active electrorheological (ER) shock absorber for a small-sized passenger vehicle. The field-dependent damping forces of the proposed orifice type of ER shock absorber are experimentally evaluated and compared with those of a conventional cylinder type of ER shock absorber. The governing equations of motion for a vehicle suspension system equipped with ER shock absorbers are derived and an optimal controller is designed to attenuate vibration due to bump and random road excitations. Control responses such as vertical acceleration of the vehicle body are evaluated in time and frequency domains, and comparative work is done between the orifice type and cylinder type of ER shock absorbers.
Published Version
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