Synthesis of a semi-active suspension seat for attenuation of Whole-Body Vibration and shock
by Xiao Qing Ma, Subhash Rakheja, Chun-Yi Su
International Journal of Vehicle Design (IJVD), Vol. 47, No. 1/2/3/4, 2008

Abstract: In this study, two semi-active control algorithms are synthesised on the basis of the measured nonlinear force-velocity properties of a Magneto-Rheological (MR) damper, including the current-dependent hysteresis and post yield saturation. The control algorithms employ the well-known sky-hook control condition function, suspension travel limits and a modulation function to compensate for the switching discontinuities. The results show that the proposed semi-active control synthesis could help achieve improved shock isolation while retaining adequate control of continuous WBV. A Hardware-In-the-Loop (HIL) test and simulation platform are developed for tuning of the proposed semi-active controllers and validation of the analytical formulations.

Online publication date: Wed, 22-Oct-2008

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