Fractional PI^λD^μ control and optimisation for vehicle active suspension
by Long Zhi, Yunqing Zhang, Liping Chen, Jingzhou (James) Yang
International Journal of Vehicle Autonomous Systems (IJVAS), Vol. 6, No. 3/4, 2008

Abstract: This paper presents an active suspension for a quarter-car model with two Degrees Of Freedom (DOF) using a fractional I^λD^μ controller. The active control is expressed as the summation of PI^λ and PD^μ, which use vertical acceleration of the body and suspension deflection, respectively, as input variables. The parameters of the controller are optimised using a Genetic Algorithm (GA). The simulation results indicate that the fractional PI^λD^μ controller for the suspension system is effective in the vibration isolation of the vehicle body and has better performance than the classical PID controller.

Online publication date: Mon, 02-Mar-2009

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