摘要
建立了电动助力转向系统的数学模型,根据路感强度的表达式,运用伯德图进行了频域分析,并制定了比例微分助力的控制策略。结合考虑车身侧倾的三自由度汽车模型和轮胎模型,建立了用于分析电动助力转向特性的仿真模型,针对转向轻便性、高速回正性和合适路感的多重目标,进行了方向盘正弦输入和方向盘撒手仿真试验,总结出了控制器参数在不同车速和转向盘输入转矩下的变化规律。
The mathematical model of the electric power steering （EPS） system is developed,and control strategy is designed by the way of frequency analysis using Bode diagram,on a basis of steering feel expression.A complete model used for analysis of automotive steering characteristic,with four-tire and three-freedom vehicle models is built.In order to meet optimal goals,including steering agility,return-ability and steering effort requirements of drivers, the rule of controller parameter values under the condition of different speeds and steering torques is concluded through numerous simulation tests.
出处
《重庆大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2010年第8期80-84,共5页
Journal of Chongqing University
基金
重庆市科委科技计划项目重点自然基金项目资助(CSTC
2006BA6017)
关键词
电动助力转向
建模
控制策略
仿真
electric power steering
modeling
control strategy
simulation
