Title: Active control of vehicle active suspension with preview, using a variable structure model reference adaptive controller
Authors: Ardeshir Karami mohammadi
Addresses: Department of Mechanical Engineering, Shahrood University of Technology, Shahrood, Iran
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.
Keywords: active suspension; adaptive control preview; model reference; variable structure control; Model Reference Adaptive Controller; MRAC; vehicle suspension; quarter car model; skyhook dampers; simulation.
International Journal of Vehicle Autonomous Systems, 2005 Vol.3 No.2/3/4, pp.253 - 264
Available online: 25 Nov 2005 *Full-text access for editors Access for subscribers Purchase this article Comment on this article