基于汽车稳定性控制系统的侧翻控制策略  

Rollover Control Strategy Based on Vehicle Stability Control System

作　　者：欧健[1] 程相川[1] 周鑫华[1] 杨鄂川[1] 张勇[1] 

机构地区：[1]重庆理工大学汽车零部件制造及检测技术教育部重点实验室,重庆400054

出　　处：《西南交通大学学报》2014年第2期283-290,共8页Journal of Southwest Jiaotong University

基　　金：重庆市自然科学基金资助项目(CSTS;2008BB6338);2013年重庆高校创新团队建设计划资助项目(KJTD201319)

摘　　要：为提高汽车在极限工况下的侧翻控制功能,建立了包括横摆运动和侧倾运动的8个自由度整车动力学模型.基于传统电子稳定控制(electronic stability control,ESC)系统直接横摆控制,提出了一种包含紧急侧倾控制的综合控制策略.采用ESC标准传感器提供的汽车侧向加速度信息计算侧倾系数,当侧倾系数超过设置的参考值时,紧急侧倾控制被激活;通过对侧向加速度的适时调节,达到对汽车侧翻的有效控制.对直接横摆控制和综合控制进行了鱼钩试验仿真,结果表明,直接横摆控制的汽车在持续小转角下具有一定的抗侧翻能力,而极限大转向工况下会发生侧翻;综合控制则提高了极限工况下汽车ESC系统的抗侧翻能力,并增强了汽车的侧翻控制功能.To enhance the rollover control function of vehicles in extreme conditions,a vehicle dynamics model with 8 degrees of freedom covering yaw and roll motions was established,and an integrated control strategy with emergency roll control was proposed based on the direct yaw control of the traditional electronic stability control （ESC）system. The roll coefficient was calculated using the vehicle lateral acceleration provided by the standard ESC sensor. The emergency roll control was activated when the roll coefficient exceeded its reference value,and the vehicle rollover got controlled effectively by adjusting the lateral acceleration in time. The results of fishhook test simulation on direct yaw control and integrated control show that under the direct yaw control strategy,the vehicle has the ability to resist rollover under continuous small steering wheel angle,but cannot resist rollover in extreme conditions with a big steering wheel angle. In contrast,the integrated control strategy improves the ability to resist the rollover in the extreme conditions and enhances the rollover control function of the vehicle ESC system.

关 键 词：电子稳定控制 侧翻控制 横摆控制 综合控制 侧倾系数 

分 类 号：U461.6[机械工程—车辆工程]