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상태관측기를 이용한 Active Front Steer 구동전동기 속도 검출
김재구(Jaegoo Kim),이진환(Jinhwan Lee),최치권(Chigwon Che),문형태(Hyungtae Moon),윤팔주(Paljoo Yoon) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Active Front Steering system controls steering gear ratio electrically. For embodiment of this function electric motor is used and it is needed to control position and speed of motor. Because of cost, position feedback comes from physical sensor, such as incremental encoder, but motor rpm is calculated from position signal of sensor. Generally, motor speed is calculated by the number of pulses which are counted in the sampling period. This method, is called M-method, can not calculate speed at lower rpm. And motor speed fluctuates at steady state by using low-resolution position sensor. In this paper, speed estimator was implemented using state observer. Simulation using SIMULINK and the experimentation show that the estimator has continuous speed signal from low to high rpm.
이진환(Jinhwan Lee),김재구(Jaegoo Kim),최치권(Chigwon Che),문형태(Hyungtae Moon),윤팔주(Paljoo Yoon) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently, the vehicle manufacturers are undergoing a revolution in the design of car electrical system. There are rapidly increasing demand of electric power for vehicle performance, price, system efficiency and force. These challenges result in the development of 42V power system instead of the existing 14V system. Accordingly many high-current electric chassis system such as EMB(Electro-Mechanical Brake), EPS(Electric Power Steering) and SBW(Steer By Wire) should switch their power bus to 42V. This paper describes the overall concept of R-EPS(Rack Assist type EPS) for 42V vehicles and outlines the components and control strategies. Finally, the results are confirmed from experiments.<br/> <br/>
이진환(Jinhwan Lee),한종철(JongChull Han),김재구(Jaegoo Kim),최치권(Chigwon Che),문형태(Hyungtae Moon),윤팔주(Paljoo Yoon) 한국자동차공학회 2003 한국자동차공학회 Symposium Vol.2003 No.8
Recently, the vehicle manufacturers are undergoing a revolution in the design of car electrical system. There are rapidly increasing demand of electric power for vehicle performance, price, system efficiency and force. These challenges result in the development of 42V power system instead of the existing 14V system. Accordingly many high-current electric chassis system, such as EMB(Electro-Mechanical Brake), EPS(Electric Power Steering) and SBW(Steer By Wire) should switch their power bus to 42V. This paper describes the overall concept of motor drive system for 42V R-EPS and outlines the components and control strategies. Finally, the results are confirmed from system performance experiments and them131 and EMI characteristics.<br/> <br/>