电动轮汽车差速控制策略及仿真

Control Strategy and Simulation of Differential for Electric-wheel Powered Vehicle

电动轮驱动的汽车各车轮运动状态相互独立,存在差速问题。为了解决电动轮驱动汽车的差速问题,使各轮速度相协调,进行了电动轮汽车差速控制策略及仿真研究。利用仿真平台对电动轮驱动汽车的车体横摆、路面不平及车轮半径不同的工况进行了仿真分析。结果表明:对驱动电机按转矩指令进行控制,采用转速随动的控制策略,可实现电动轮驱动汽车在各种工况下的自适应差速,避免出现车轮拖滑或滑转的情况。

Each wheel of electric-wheel powered vehicle is independent, which has the difl＇erential prohlem. The wheel velocity is coordinated each other to solve the problem of the differential, therefore the control strategy and simulation research is put forward in this paper. The simulation is analyzed in the condition of body yawing, the rough road surface and the various wheel rolling radius based on the simulation platform. The resuhs show that the drive motor is controlled hy torsion moment command. using the control strategy of the rotating velocity following to realize the adaptive differential in the various conditions, preventing the vehicle wheel from sliding or slipping and turning.