2011•Unpublished venueRequires access

Simulation study on ride comfort and road-friendliness of heavy vehicles based on multi-objective optimization

Feng He, Jing Zhao

Abstract

Mathematical model and dynamical model of passive suspension and semi-active suspension are established. A fuzzy PID controller is designed to control the damping of semi-active air suspension. Using multi-objective method and co-simulation technology and targeting the ride comfort and road-friendliness simultaneously, the differences among sprung mass acceleration, suspension working space and dynamic tire load of semi-active air suspension and passive suspension have been analyzed. The results shows that, under the control of fuzzy PID method, semi-active air suspension is superior to passive suspension, which can improve the ride comfort and road-friendliness of the vehicle effectively.

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Key concepts: Sprung mass, Suspension (topology), Air suspension, Acceleration, Automotive engineering, Controller (irrigation), PID controller, Control theory (sociology)