Active control of vehicle active suspension with preview, using a variable structure model reference adaptive controller
by Ardeshir Karami mohammadi
International Journal of Vehicle Autonomous Systems (IJVAS), Vol. 3, No. 2/3/4, 2005

Abstract: A Variable Structure Model Reference Adaptive Controller (VS-MRAC) is proposed for the active control of vehicle suspension with preview. A two DOF quarter car model has been considered. The reference model is also a two DOF vibrating system with a skyhook damper. The structure of the switching functions is designed, based on global exponential stability requirements, and shows perfect model following at a finite time. Sliding surfaces are independent of system parameters and, therefore, VS-MRAC is insensitive to system parameter variations. Simulation is presented for some road irregularities, and compares to active suspension with fixed structure MRAC, and passive suspension. VS-MRAC shows the best performance on ride and working space.

Online publication date: Fri, 25-Nov-2005

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