• NEWSLETTER 전기공업
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• no.10 s.10
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• pp.1-14
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• 1990

• ICROS
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• v.2 no.1
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• pp.18-24
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• 1996

본 연구에서는 향후 초소형, 초저가의 ABS가 개발되어 보편적으로 차량에 장착될 것을 대비해 독자적으로 설계, 제작된 ABS에 대해 제시하고자 한다. 개발의 목표는 유압 모듈레이터의 핵심 부품인 솔레노이드 밸브의 개발과 장착성이 우수한 소형의 PCB(Printed Circuit Board)형의 ECU(Electronic Control Unit)이다. 특히 개발된 밸브의 경우 현재 범용적으로 많이 사용되는 2포지션 2웨이 밸브가 아닌 2포지션 3웨이 밸브이며, 이로써 1채널당 브레이크 라인 압력을 제어하기 위해 1개의 밸브만 소요된다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.05a
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• pp.448-451
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• 2001

일반적으로 전기기기는 사람의 스위칭조작으로 작동이 되고 있다. 이를 개선하기 위하여 본 연구는 전기기기의 자동 스위칭과 홈네트워킹을 위한 제어용 임베디드 시스템을 설계하고, 제작하였다. 설계 제작한 제어 시스템은 PIC16F84에서 접근 센서의 입력 신호를 이용하여 전원 단속, 기기의 on/off를 수행하였으며, 내부의 상태를 감지하여 기기의 상태 표시용LED구동, 솔레노이드 밸브의 open/close 기능을 부여하였다. 본 임베디드 시스템은 통신 모듈을 구성하여 PIC의 기능을 강화하면 홈네트워킹용 시스템으로 발전할 수 있다.

• Proceedings of the Korea Society for Industrial Systems Conference
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• 2002.06a
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• pp.53-55
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• 2002

본 연구는 자동차 급발진 사고에 관한 안전장치 개발에 그 목표를 두고 있다. 최근들어서 자동차 급발진 사고는 사회문제화되고 있고, 인명피해뿐만 아니라 자동차회사와 소비자간의 법적 피해 보상문제가지도 대두되고 있으며, 최근 자동차 설계구조의 문제가 있다는 법적 해석이 나오기도 했다. 본 연구는 자동변속기를 장착한 자동차의 급발진 방지용 변속레버 제어장치에 관한 것으로 구체적으로는 브레이크 페달을 밟고 있어야 변속레버조작이 이루어지도록 한 변속레버 제어수단을 솔레노이드 작동에 의한 스토퍼로 제어하되 스토퍼를 걸림 작동부로 간편하고 있도록 한 안전장치이다.

• Journal of the Korean Society of Propulsion Engineers
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• v.10 no.2
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• pp.95-101
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• 2006

A fuel metering unit using PWM(Pulse Width Modulated) solenoid valve has some advantages such as low cost, small size and simple structure. The mathematical model and its experimental rig of the fuel metering unit using PWM solenoid valve and CPDV(Constant Pressure Drop Valve) for miniature turbo engines were constructed. As the results of simulation, some major parameters which have dominant effects on the performance were found. And the experimental results verified the validity of established model by showing the good agreement with the numerical simulation results. Hence, this system modeling could be used effectively in the actual development of a PWM fuel control system.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.36 no.10
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• pp.971-977
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• 2012

It is well known that the performance of a diesel injector is directly related to the power, emission, and fuel consumption of the diesel combustion engine. In this study, the injection response characteristics of CRDi injectors driven by a solenoid coil and a piezoceramic were investigated by using the AMESim simulation code. Some analytical parameters such as the fuel pressure and hole diameter were considered. From this study, it was shown that the piezo-driven injector had a faster response and had better control capability than the solenoid-driven injector. In addition, it was found that the piezo-driven injector can be utilized more effectively in a multiple injection scheme than a solenoid-driven injector.

• Journal of the Korean Society of Propulsion Engineers
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• v.17 no.2
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• pp.128-134
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• 2013

A 2-way solenoid valve regulates to maintain the pressure of ullage volume of propellant tanks when the command is given by control system for the liquid-propellant feeding system of space launch vehicle. The simulation model of solenoid valve for pressurization is designed with AMESim to verify the designs and evaluate the dynamic characteristics and pneumatic behaviors of valve. To improve the accuracy of the model, numerical flow analysis by using FLUNET code. The simulation results of their operating durations of valve by AMESim analysis are matched up with the results of experiments and validate valve model. Using the model, we analyze performance of valve; opening/closing pressure, operating time on various design factors of basic valve and control valve; geometrical size of valve seat, ratio of basic valve and sealing area.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.1055-1056
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• 2010

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2010.05a
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• pp.745-746
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• 2010

• Transactions of the Korean Society for Noise and Vibration Engineering
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• v.22 no.5
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• pp.451-458
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• 2012

This paper is concerned with the suppression of noise and vibrations of the brake system of elevator traction machine by means of a solenoid control technique. The solenoid is used to hold the brake shoe, which is then released by turning the solenoid off. Since the brake shoe hits the brake disk, vibrations and noise occur. We developed the solenoid control technique based on the dynamic behavior of the solenoid. The theoretical model for the solenoid is modeled by using linear magnetic principles. The solenoid model was then combined with the vibration model to simulate the vibrations of brake system. The simulation results show that the additional pulse input to the solenoid can decrease the vibrations. The timing of the applied pulse is determined by observing the current. The experimental results show that both the vibrations and noise can be substantially decreased, which validates the approach developed in this paper.