汽车电动助力转向系统的混杂控制与试验  

Hybrid control and tests of automobile electric power steering system

作　　者：范鑫[1] 赵景波[1] 贝绍轶[1] 张兰春[1] 

机构地区：[1]江苏技术师范学院机械与汽车工程学院,江苏常州213001

出　　处：《传感器与微系统》2010年第11期90-93,97,共5页Transducer and Microsystem Technologies

基　　金：国家自然科学基金资助项目(50475121);高等学校博士学科点专项科研基金资助项目(20050299005)

摘　　要：汽车电动助力转向(EPS)系统以蓄电池为能源,以电动机为动力元件,汽车EPS控制系统的设计是提高EPS系统性能和电动机效率的关键。分析了汽车EPS系统的混杂特性,可分为助力工况、回正工况和阻尼工况。设计了汽车EPS混杂控制系统,助力工况采用由Bang-bang控制和变参数双模糊控制组成的双模态控制器;回正工况采用PID控制器;阻尼控制采用电动机制动转矩控制方式。设计了实车试验系统,进行了转向手感实车试验和回正控制实车试验。汽车EPS系统的混杂控制充分反映了汽车EPS系统的工作状况,优化了EPS系统的功能和控制效果,增强了转向操纵的安全性,提高了EPS电动机的工作效率和节能环保能力。The electric power steering（ EPS） system employs the battery as energy source and motor as actuator, the design of the automotive EPS control system is the critical step to improve the EPS performance and the motor efficiency. The EPS system has hybrid characteristics and has assist condition, return-to-centre condition and damping condition. The hybrid control framework and the switched controller were established. For assist condition, dual-mode controller consists of Bang-bang controller and variable parameters＇ s double-fuzzy controller is adopted. For return-to-center condition,PID controller is adopted. For damping condition, the motor＇s terminal voltage is short circuit to get reverse torque. The vehicle test system is established, the steering handle tests and the return-to-center control tests are operated. The hybrid control of EPS system working conditions can be fully reflected,the performance and control effect are optimized, the manipulation safety is enhanced and the motor＇ s work efficiency and energy conservation and environmental protection capacity are improved.

关 键 词：汽车 电动助力转向 混杂控制 切换控制 

分 类 号：TP291[自动化与计算机技术—检测技术与自动化装置] U463.4[自动化与计算机技术—控制科学与工程]