سيستم فرمان باسيم تحمل پذير در برابر عيب

چكيده انگليسي :

AbstractFirstly the SBW system and its components are introduced in detail and the accepted level of reliability for suchsystem is discussed based on what is disseminated in authentic standards Then the proposed relevant techniquesproposed so far in literature for SBW system reliable development are reviewed After system introduction and theoretical discussion the SBW system is simulated in MATLAB Simulink Theelectric motors are simulated by using dynamic equations and controlled using vector control technique in rotor reference frame and employing SV PWM inverter Then these two electric motor drives are controlled using theproposed control scheme to study the SBW system performance Also the CarSim software is used to investigatethe vehicle dynamic behavior equipped with the proposed SBW system The angle and torque estimation areadded in next step Afterwards a FDIR unit is developed in order to detect possible faults in voltage current angular position and torque sensors with the aim of faulty sensor isolation and output reconstruction usingalternative analytical solutions The proposed SBW system performance under various faulty conditions is investigated Implementing the FDIRunit the proposed SBW system can endure faults in different sensors and keep working without any interruption Key WordsSteer by wire system fault tolerant sensor vehicle steering system permanent magnetsynchronous motorIntroductionVehicle technology has rapidly evolved and its efficiency safety and performance have beenhighly improved over the time Steering system transferring the drivers steering commands totries has experienced several evolution levels and has a trend from a pure mechanical toward apure electrical system The mechanical parts are being substituted by electrical sensors andactuators with the aim of improved performance Vehicle steering system has an evolution history started from pure mechanical generationupgraded with hydraulic power assisted system HPS electro hydraulic power assistedsteering EHPS electric power assisted steering EPS and moves toward SBW system The EPS system resolved all the environmental and acoustic issues reported for EHPS due tothe use of hydraulic oil Various locations have been considered for this electric motorinstallation It can be placed on the steering column which is the oldest arrangement at thesteering rack right at the steering pinion with slightly higher steering power at a second pinionsupplying higher power compared with the other arrangements or at an axis parallel with rack Eventually EPS became the best choice for passenger cars due to benefits of lower weight andsize less complexity minimum maintenance cost and also more possible steering functions Although the EPS could improve fuel efficiency up to 5 by power on demand function andalso passenger comfort using special functions such as lane keeping assistance system smartparking assistance system and vehicle stability management but still suffered from somedesign restrictions due to the use of steering column Fault tolerant EPS system is being widely studied through industrial researches and patents The utilization of multi winding electric motors fault tolerant control methods and virtualsensor techniques relying on advanced estimation methods are presented for EPS system Suchimprovements are extended to develop SBW as the next generation of steering system

مرتضوي زاده، ابوالفضل

سيستم فرمان باسيم تحمل پذير در برابر عيب

سيستم فرمان باسيم , تحمل پذير در برابر عيب , سنسور , سيستم فرمان خودرو , موتور سنكرون آهنرباي دائم