Symbolic multi-objective optimisation of the dynamic behaviour of actively suspended road vehicles
by Massimiliano Gobbi, Giampiero Mastinu
International Journal of Vehicle Design (IJVD), Vol. 28, No. 1/2/3, 2002

Abstract: The dynamic behaviour of actively suspended rod vehicles is studied symbolically by means of two different simple linear system models (one and two degrees of freedom). In the order to describe the response of such systems to stochastic excitation, analytical formulae are derived estimation important vehicle performance indices such as ride comfort, working space (i.e. relative displacement between wheel and vehicle body), and road holding. Two different power spectral densities describing road roughness have been used. By applying Multi-objective Programming, analytical formulae have been derived for defining in a theoretically rigorous way the best compromise among ride comfort, working space and road holding. Fundamental but still un-referenced issues on sky-hook control strategy of active suspensions are presented and discussed.

Online publication date: Fri, 15-Aug-2003

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