摘要
本文对轮毂电机驱动式电动汽车驱动悬挂系统集成控制方法进行研究,构建包含扭转振动模型、纵向振动模型及垂向振动模型的轮毂电机驱动式电动汽车耦合动力学模型及路面模型,在此基础上,设计模糊控制器、滑模控制器及PID控制器,集成各控制器协调互补控制电动汽车的主动前轮转向、目标横摆力矩以及主动悬架,实现对电动汽车驱动悬挂系统的集成控制。结果表明:在该方法的集成协调控制下,可以显著降低峰值处的车体侧向加速度与横摆角速度,并实现质心垂向加速度与侧偏角的有效抑制,提升电动汽车的综合性能,显著改善汽车行驶中的悬架动行程与轮毂电机定转子位移,提升汽车的操纵平稳性与乘坐舒适性,并且可以降低汽车行驶时撞击限位的几率,保障轮毂电机驱动式电动汽车的稳定行驶。
The integrated control method for a hub motor-driven EV drive suspension system is studied in this paper. The coupling-dynamic model of a hub motor-driven EV and road excitation model are constructed, including the torsional, longitudinal and vertical vibration models. Then, the fuzzy, sliding mode and proportional-integral-derivative controllers are designed on this basis, and each controller is integrated to coordinate and complementarily control the active front-wheel steering, target yaw moment and active suspension of an EV. The integrated control of the drive suspension system of an EV is realized. The results reveal that the lateral acceleration and yaw rate of the vehicle body at the peak can be significantly reduced under the integrated and coordinated control using this method. Moreover, the vertical acceleration and yaw angle of the mass centre can be effectively suppressed, and the comprehensive performance of the EV can be improved. This method can significantly improve the dynamic stroke of the suspension and the hub motor stator and rotor displacement during driving, improving the handling stability and ride comfort of the vehicle. Further, this method can reduce the probability of impact during vehicle driving and ensure the stable driving of a hub motor-driven EV.
作者
张鹏
王洪新
程振邦
ZHANG Peng;WANG Hongxin;CHENG Zhenbang(School of Mechanical and Vehicle Engineering,West Anhui University,Lu′an 237012,Anhui,China)
出处
《机械科学与技术》
CSCD
北大核心
2022年第10期1543-1549,共7页
Mechanical Science and Technology for Aerospace Engineering
基金
安徽高校自然科学研究重点项目(KJ2020A0625,KJ2020A0626)
电气传动与控制安徽普通高校重点实验室开放基金项目(DQKJ202006)
皖西学院校级自然科学研究重点项目(WXZR202021)
皖西学院教师国内访学研修项目(wxxygnfx2021005)。
