Optimization of Road Comfort and Road-friendliness of Interconnected Hydro-pneumatic Suspension Based on Genetic Algorithm

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Journal of Vibration and Shock ›› 2011, Vol. 30 ›› Issue (8) : 133-138.

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Optimization of Road Comfort and Road-friendliness of Interconnected Hydro-pneumatic Suspension Based on Genetic Algorithm

Du Heng; Wei Jian-hua

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Abstract

In order to improve engineering vehicle road comfort and road-friendliness, co-simulation model with ADAMS/Simulink/AMESim and multi-objective optimization function were established based on 7-DOF whole vehicle interconnected hydro-pneumatic suspension model with considering of the nonlinear characteristic of all components and four-wheel road signal correlation. Co-simulation optimization was achieved by genetic algorithm. The results show that total weighted RMS acceleration of vehicle body decrease by 42.5% and road-friendliness factor decrease by 4.5% compared with the former in the case of speed 60km/h. Road comfort has been greatly improved and road-friendly factor has been slightly improved. Vehicle ride comfort and road-friendliness can be both improved by multiple software co-simulation based on genetic algorithm. The work presented in this paper can be used for the simulation research of multi-axis chassis performance improving in the future.

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hydro-pneumatic suspension / comfort / road-friendliness / optimization / co-simulation / genetic algorithm

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Du Heng;Wei Jian-hua. Optimization of Road Comfort and Road-friendliness of Interconnected Hydro-pneumatic Suspension Based on Genetic Algorithm[J]. Journal of Vibration and Shock, 2011, 30(8): 133-138