摘要
为提高车辆的侧倾稳定性,针对侧倾力矩分配对车辆操纵稳定性的影响,提出了主动横向稳定杆抗侧倾与操稳集成控制研究。建立了9自由度整车动力学模型,采用backstepping非线性控制方法设计了抗侧倾控制器,可实现车身侧倾按需控制;利用轮胎垂向载荷与侧向动力学的耦合机理,采用模糊PID控制算法调整前后主动横向稳定杆扭矩分配系数,实现对车辆抗侧倾与操稳性集成控制。最后,采用转向盘阶跃输入,对控制系统进行了仿真,结果表明上述集成控制器实现了车身侧倾控制,并改善了车辆的操纵稳定性。
For the purpose of improving vehicle roll stability, and considering the effect of the roll moment distribution on the steering stability at the same time, an integrated control based on active anti-roll bar control system is developed. A 9 DOF full-car dynamics model is established, an active anti-roll bar controller aimed at enhancing the anti-roll capability as required is designed using backstepping nonlinear control method. Based on the coupling mech- anism of the tire vertical load and lateral force, a fuzzy-PID controller is developed to coordinate the roll moment distribution coefficient between the front and rear anti-roll bar, so as to integrate control the anti-roll and handling performance. Finally, a simulation is performed on the condition of step steering input, and the result shows that the controller can improve the anti-roll and handling performance at the same time.
出处
《计算机仿真》
CSCD
北大核心
2016年第9期169-173,218,共6页
Computer Simulation
基金
江西省教育厅科学技术研究项目(GJJ151160)
江西省科技厅科技支撑计划项目(20135BBG70010)
