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Mathematical Modelling and Simulation Of Semi- Active Suspension System For An 8×8 Armoured Wheeled Vehicle With 11 DOF

Stability and ride comfort in multi-wheeled military vehicles depend on a combination of vertical motion and angular motion of pitch and roll. Since multi-wheeled military vehicles are intended to deliver accurate firing attack, stability and ride comfort for the military vehicles is a must. This study focuses on modelling and predicting vehicle response under the source of road disturbance. A mathematical model has been developed and control algorithm has been verified with the purpose/objective of reducing the unwanted sprung mass motions such as heave, pitch and roll. Semi active suspension gives better ride comfort with consumption of fraction of power required for active suspension. In this paper, the comparative performance of passive suspension along with two semi-active suspension control logics namely, on-off skyhook and continuous skyhook has been demonstrated through simulations. The ride comfort is evaluated in terms of rms acceleration at CG in vertical direction (Z), which is the major contributor for ORV Measurement. Keywords—AFV Suspension; Semi Active Suspension; Sky hook damping; MagetoRheological Damper; Ride comfort Analysis; Mathematical modelling;