四轮独立驱动-独立转向电动车辆动力学控制现状

四轮独立驱动-独立转向(4WID-4WIS)电动车辆除具有分布式驱动电动车辆传动链短、传动高效、结构紧凑的优点外,车辆的机动性及可操控性更高。通过对4WID-4WIS车辆的运动学及动力学控制展开论述,提炼了相关研究的热点与难点:在车辆控制系统构架上广泛采用分布式网络控制系统,非理想网络下的控制实时性、可靠性问题是研究的难点,动力学分层控制方法是研究的热点;在车辆动力学控制方法上,主要研究集中在基于一个或多个优化目标的转矩分配方法,协调多个控制目标的集成控制成为重要的研究方向;为了解决4WID-4WIS车辆转向模式停车切换的问题,基于该车辆的控制自由度冗余对转向模式动态切换方法的研究成为一个新的研究方向。

Review on dynamics control of 4WID-4WIS electric vehicle

The four-wheel independent drive and four-wheel independent steering (4WID-4WIS) vehicle has the advantages of short transmission chain, high efficiency, compact structure, and high maneuverability. The kinematics and dynamic control of the 4WID-4WIS vehicle are discussed, then key and difficult problems are refined. The distributed network control system is widely used in the vehicle control system, so that real-time and reliable control under non-ideal network is the research challenges, and hierarchical control method is a hot research topic. For the vehicle dynamics control method, the main research focuses on torque distribution method under one or more optimization objectives, and integrated control which harmonizes multi control subjects has become an important research direction. In order to solve the problem of steering mode static switching of the 4WID-4WIS vehicle, the study on the dynamic switching method based on redundant control degree of freedom is a new research direction.