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MDPS 모터 전류센서리스 및 상 오픈 제어 알고리즘 개발
이창원(Changwon Lee),김문수(Munsu Kim),유지훈(Jihoon Yoo),김천규(Cheonkyu Kim),이세복(Sebok Lee) 한국자동차공학회 2017 한국자동차공학회 학술대회 및 전시회 Vol.2017 No.11
These days the technology about Autonomous Vehicles for accident by driver"s mistake attract great attention. Many advanced companies are developing a part of Autonomous Vehicles. For succeeding Autonomous Vehicles, Drivers have to drive safely without keeping eyes forward. Fail Operation technology with no breakdown while driving is needed for Autonomous Vehicles. In this paper, we suggest Fail Operation method which continue steering assist when MDPS‘s motor phase open or failure in current sensor. Open-Loop algorism using current commend controls MDPS when current sensor failed. In this case, Open-Loop control suggests the method of making 2D table type. Input current commend and motor speed of 2D table type, and Output voltage value of 2D table type. Also, the motor phase open propose the method using other 2 normal phases. It composed of coordinate system transform, Torque optimization and PWM conversion. Or these suggestions, it is possible to keep steering assist when current sensor and motor phase open are broken down.
박찬식(Chansik Park),이세복(Sebok Lee),김영광(Youngkwang Kim) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
Steering-pull in vehicle appears due to cross wind, road crown, wheel alignment and so on. In this study, real-time steering-pull compensation control logic, which is activated in continuous lateral load, is proposed. This system is composed of three subsystems such as signal pre-processing module, steering-pull estimation module and compensation steering-torque module. The algorithm is developed and verified by using vehicle test.