汽车电动助力转向系统的容错控制研究  

Research on The Fault Tolerant Control of The Electric Power Steering System

作　　者：刘罡[1] 夏小虎 冯敏亮[1] 

机构地区：[1]合肥学院机械工程系,合肥230601

出　　处：《合肥学院学报（自然科学版）》2013年第2期62-66,80,共6页Journal of Hefei University :Natural Sciences

摘　　要：汽车转向系统的发展经历了从简单的纯机械转向系统、机械液压动力转向系统,到电控液压动力转向系统,直到更为节能、操纵性能更好的电动助力转向(简称EPS)等几个阶段.TIF是汽车动力转向的发展方向,相比较于以往的转向系统有安全、环保、节能、装置灵活、调整简单等优越之处.TIF是一个多输入多输出系统,传感器故障会导致控制系统的性能变差,所以要保证系统性能必须使闭环系统具有鲁棒性.在数学模型和助力特性研究基础上,根据汽车运行过程中转向工况,设计了基于完整性的被动容错控制系统.最后对容错控制算法进行了仿真分析.The developing process of steering system has experienced several phase from the simple Me- chanical Steering System, Mechanical-Hydraulic Steering System to Electric-Hydraulic Steering Sys- tem, till the Electric Power Steering System （EPS） with lower energy consumption and higher perform- ance. The EPS is applied more and more widely in the automobile industry, which is led by its advan- tages over the traditional hydraulic power steering systems in safety, environmental protection, engine efficiency, flexibility of installation, and easiness on the adjustment. EPS is multi-input and output system, sensor fault makes it difficult to keep the satisfying performance. Therefore, in order to guar- antee the system performance, the closed-loop system must have robustness. Based on the studies of mathematic modeling and the assist characteristics, the control algorithm of sensor fault is addressed in terms of steering operation ant Control Algorithm. At , in which the key research includes Integrity Control of Passive Fault Toler- last, the Fault Control Algorithm is analyzed by emulator.

关 键 词：电动助力转向 容错控制 传感器故障 

分 类 号：TM393[电气工程—电机]