摘要
电动助力转向(EPS)是一种新型的汽车动力转向技术。为了提高系统的响应速度、控制精度、实时性等,分析了EPS系统的工作原理,结合EPS的结构和动力学特性,建立了EPS的数学模型。在模糊PID控制基础上,提出了一种将单纯性法与模糊PID控制相结合的改进模糊PID控制方法,并在MATLAB平台上建立了EPS系统仿真模型。仿真结果表明,方法明显改善了系统的瞬态响应和随从特性,具有良好的转向灵活性和操纵稳定性。
Electric Power Steering is a new steering power technology for vehicles. In order to improve the response speed, precision control, real - time etc, this paper analyses the working principle of electric power steering （EPS） system, and combining with the structure and dynamic characteristics of EPS, establishes a mathematical model of EPS. Based on fuzzy PID control, this paper proposes a modified fuzzy PID control method which combines simplicity shape algorithm with fuzzy PID control method, and establishes an EPS system simulation model in the MATLAB. The results of simulation experiment confirm that this method can obviously improve the transient response and attendant characteristics of the system, and has good steering flexibility and handling stability.
出处
《计算机仿真》
CSCD
北大核心
2009年第9期232-234,255,共4页
Computer Simulation
关键词
汽车
电动助力转向
模糊控制
建模
仿真
Automobile
Electric power steering（EPS）
Fuzzy control
Modeling
Simulation
