摘要
针对主动转向干预时转向盘力矩发生突变的问题,提出了助力电机前馈助力修正策略。为验证所提出的两种助力修正方案的控制效果,进行了主动转向干预时转向盘力矩阶跃仿真试验。借鉴阶跃响应瞬态特性的评价方法,提出了主动转向干预时助力修正方案的评价指标。两种助力修正控制方案的仿真和评价分析结果表明,与基于二自由度整车模型修正方案相比,基于扭矩传感器输出修正方案的助力修正控制能更好地满足转向路感的要求。
To solve mutations of steering wheel torque with the interference of active steering, feed--forward assisr force correction strategy for assist motor was presented. To verify the perform- ance of the proposed control programs, step simulation tests of steering wheel torque with the inter- ference of active steering were carried out. In view of the evaluation methods of transient characteris- tics for step response, evaluation indexes for correction control programs were introduced. Simulation and evaluation results of the performance of the two control programs indicate that the correction con- trol program based on the output of torque sensor can achieve better steering feeling than that based on two- degree- of- freedom vehicle model.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2012年第15期1873-1876,共4页
China Mechanical Engineering
基金
国家自然科学基金资助项目(51005113)
关键词
电动助力转向
主动转向
助力修正
控制策略
评价指标
electric power steering（EPS）
active steering
correction of assist force
control strat-egy
evaluation indexes
