• 한국소음진동공학회논문집
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• 제23권2호
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• pp.160-166
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• 2013

This paper proposes a driver supportive device with haptic cue function which can be applicable for vehicles adopting manual transmission system to transmit gear-shifting information to a driver by kinesthetic forces. This haptic cue function is implemented on accelerator pedal by utilizing magnetorheological(MR) fluid and clutch mechanism. In order to achieve this goal, an MR clutch mechanism is devised to be capable of rotary motion of accelerator pedal. The proposed MR clutch is then optimally designed and manufactured under consideration of spatial limitation of vehicles. After transmission torque is experimentally evaluated according to field intensity. The manufactured MR clutch is integrated with accelerator pedal and electric motor to establish the haptic cue device. Control performances are experimentally evaluated via a simple feed-forward control algorithm.

• 한국철도학회:학술대회논문집
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• 한국철도학회 1999년도 추계학술대회 논문집
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• pp.267-272
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• 1999

The auxiliary power supply system fur passenger service of railway car has been developed from MA(Motor-Alternator) to CVCF Inverter (Static Inverter). Generally, a customer wants to apply tile new control method and device for auxiliary power supply of railcar However, if the auxiliary power supply is supplied to extended existing line, the maintenance cost of the old system is less expensive than new developed system, so, the customer specifies that the auxiliary power supply has compatibility with existing one completely. At that time, the hardware is nearly same as existing system except small changes of accessories for better performance. This paper describes the flicker control using feed-forward method of auxiliary power supply system for new 50 electric railcars, which are delivered to Korean National Railroad (KNR) Kwa-chon Line. The existing power supply system has damping resistor box to stabilize the DC input (1.5 ㎸). At this time, for better system efficiency the new system has not include resistor box but new control method including feed-forward control is applied. This control algorithm realizes the better stabilization of input power compared to the result of the existing system, which includes resistor box

• 한국융합학회논문지
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• 제10권12호
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• pp.93-99
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• 2019

전기 자전거 또는 전동 킥보드와 같은 소형 전동차량은 차량에 장착된 배터리를 충전하여 운행되는데,이들 이용자 중 일부는 공동주택이나 공공시설물에 설치된 비상용 전기 소켓을 시설물 허락 없이 이용하는 경우가 늘어나고 있다. 이와 같은 사유로 간단한 설비 구축만으로 전력의 사용을 승인 받고 아울러 이용 요금을 즉시 지불할 필요성이 건물관리자는 물론 소형 차량 이용자들로부터 증가하고 있다. 본 논문에서는 공동주택이나 공공건물에 기 설치된 15[A] 전기 소켓에 급전제어장치를 추가로 설치하여 1[kW] 이하의 소형 전동차량에 장착된 배터리를 충전하여 사용할 수 있는 기법을 제안한다. 또한 전력 사용자 승인 알고리즘과 사용된 요금의 부과 방안에 대하여도 기술한다. 본 연구의 결과로 소형 전동차량에 장착된 배터리를 손쉽게 충전할 수 있는 환경을 조성함으로써 도전(electricity theft) 방지 효과를 가진 사용자인증 전력공급시스템을 구현한다.