Energy management strategy for active suspension with linear motor

Abstract

To reduce the energy consumption of active suspension, an coordinated control strategy of the energy management for the active suspension with linear motor is proposed. The quarter model of vehicle active suspension is established to analyze active mode and regenerative mode for the active suspension with linear motor. And the relationship between the optimal active force and suspension speed is analyzed. The LQG controller of the active suspension with linear motor is established. Under the coordinated control strategy, the simulation analyses for the active suspension with linear motor are carried out. The results show that the coordination control strategy can greatly reduce the energy consumption of the active suspension, while improving vehicle ride comfort and stability. And the regenerative efficiency of for the active suspension with linear motor is about 20%.