Comprehensive performance improvement of IWM-EVs with active suspension based on multi- objective integrated optimization

It is well known that active suspensions require high actuation power and consume a lot of energy in the aggressive operation condition, which will reduce the achievable driving range for electric vehicles. To solve the contradiction between dynamic performances and efficiency in active suspension system and improve the capacity utilization rate, this paper presents a multi-objective optimization method for the comprehensive performance improvement in active suspension adopted in IWMEVs (in-wheel motor electric vehicles). The simulation results show that not only a better balance between the ride comfort and stability in vehicle is accomplished, but also the active suspension utilization rate is improved. This research demonstrates the application potential of the co-operative optimization method in parameters design of active suspension system.