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Performance Evaluation of a Semi-active Vehicle Suspension Using Piezostack Actuator Valve
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 Title & Authors
Performance Evaluation of a Semi-active Vehicle Suspension Using Piezostack Actuator Valve
Han, Chulhee; Yoon, Gun-Ha; Park, Young-Dai; Choi, Seung-Bok;
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This paper proposes a new type of semi-active direct-drive valve(DDV) car suspension system using piezoelectric actuator associated with displacement amplifier. As a first step, controllable piezoelectric DDV damper is designed and governing equation of a quarter-vehicle suspension system consisting of sprung mass, spring, tire and the piezostack DDV damper is constructed. After deriving the equations of the motion, in order to control spool displacement and damping force the skyhook controller is designed and applied. The performance evaluation of the proposed semi-active suspension system is conducted with different displacement of spool. Then, the ride comfort analysis is undertaken in time domain with bump road profile.
Piezostack Actuator;Vehicle Suspension;Direct-drive Valve;Hydraulic Damper;Semi-active Control;
 Cited by
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