Active Fault Tolerant Control of Electric Power Steering System with Sensor Fault
作者单位：Ordos Institute of Technology Anhui Communications Vocational and Technical College School of Mechanical and Automotive EngineeringHefei University of Technology
会议名称：《第36届中国控制会议》
会议届次：36
主办单位：Dalian University of Technology;Systems Engineering Society of China (SESC);Technical Committee on Control Theory (TCCT), Chinese Association of Automation (CAA)
会议日期：2017年
学科分类：082304[工学-载运工具运用工程] 08[工学] 080204[工学-车辆工程] 0802[工学-机械工程] 0823[工学-交通运输工程]
基 金：supported by Natural Science Foundation of Inner Mongolia(2016MS0532) Science Research Project of Higher Education in Inner Mongolia(NJZY16376,NJZZ16369) Academic Subvention of Top-level Talents in Higher Education in Anhui Province(gxbjZD36) the open fund of Key Laboratory for New Technology Application of Road Conveyance of Jiangsu Province(Grant No.BM20082061504)
关 键 词：EPS Fault Estimation Sensor Reconstruction Fault Tolerant Control
摘 要：Considering the assist characteristics failure of electric power steering(EPS) system caused by the sensor fault,this paper presents a fault tolerant control strategy based on fault estimation and *** EPS model with torque sensor and the motor current sensor fault is *** the observer technology and the linear matrix inequality,robust sensor fault estimation with H performance index is achieved;the sensor reconstruction is derived from the fault estimation and sensor fault output,the reconstruction value is then used as the input of the EPS system controller to realize fault tolerant *** simulation result in Matlab/Simulink environment shows that:when the common fault of the torque sensor and the current senor occurs,the designed estimation algorithm could estimate sensor faults accurately;While the fault tolerant control can provide approximately equivalent assist performance of fault EPS to the normal one,which promotes the stability and security of EPS to a large extant.