Practical Semiactive Control of Hydropnematic Suspension Units

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Journal of the Korea Institute of Military Science and Technology 2003;6(4):9-21.

¹
²

유기압 현수장치의 반능동 제어 구현에 관한 연구

이윤복, 송오섭

¹국방과학연구소
²충남대학교 기계공학과

Abstract

This paper describes the practical implementation of a semiactive hydropneumatic suspension system to provide the high off-road performance of military tracked vehicles. Real gas behavior of a spring system, frictional forces of joints, and the dynamics of a continuously variable damper are considered. The control system is consisted of two control loops, an outer loop calculates a target spool position which can deliver the required damping force and an inner loop tracks the required spool position. Dynamic tests of the one axis model show that the semiactive suspension system considerably reduces the acceleration as well as velocity and displacement of the sprung mass than the passive one.

Key Words: Semiactive Control, Continuously Variable Damper, Hydropneumatic Suspension Units, Friction