摘要
针对高速公路上因驾驶员注意力不集中容易发生车辆偏离车道事故的问题,提出采用四轮差动制动对车辆施加辅助横摆力矩以避免车辆偏离车道的方法。基于预瞄点处的车-路偏差、车辆状态和道路附着限制计算期望的横摆响应,设计滑模控制器控制辅助横摆力矩。通过在同侧车轮定比例分配制动力产生横摆力矩,使车辆横摆响应跟踪目标值,达到车道偏离辅助控制的目的。在Carsim/Simulink联合仿真平台上对基于差动制动的车道偏离辅助控制方法进行仿真实验,研究结果表明所提出方法将车辆限制在车道范围内,有效避免了车道偏离事故的发生。
A large number of lane departure accidents in high way is due to inattention of the driv- ers. Herein,a new method for lane departure avoidance was presented,which is applied additional yaw moment to correct lane departure of the vehicle by means of four wheels differential braking. The de- sired yaw rate was calculated by considering vehicle--lane deviation, vehicle dynamics and limitation of road adhesion. A SMC was designed to control the additional yaw moment. The yaw moment was pro- duced by the distribution of break forces between the same side brakes with fixed ratio,and lane de- parture avoidance was carried out by tracking desired yaw response. The proposed LDAS was evalua- ted via Carsim/Simulink. Simulation results show that the proposed method can restrict the vehicle in- to lane range and avoid lane departure accidents.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2013年第21期2977-2981,共5页
China Mechanical Engineering
基金
教育部长江学者与创新团队发展计划资助项目(531105050037)
湖南省自然科学基金资助项目(13JJ4033)
湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(61075002)
湖南大学青年教师科技创新扶持项目(531107040144)
关键词
车道偏离辅助控制
滑模控制
差动制动
横摆响应
lane departure avoidance system （LDAS）
sliding mode control （SMC）
differential breaking
yaw response
