• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1995년도 추계학술대회 논문집
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• pp.822-825
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• 1995

Linear elastic stress analysis of aluminum wheel was studied using ANSYS and Unigraphics. The load condition of wheel impact test was replaced whit static force using energy valance concept. And the results were compared with strain gaga test. The test results were good agreement with analysis results.

• 정보처리학회논문지C
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• 제9C권5호
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• pp.615-626
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• 2002

최근 흠 네트워킹에 대한 관심이 증가하면서 멀티미디어 클립서비스에 관한 연구가 진행되고 있다. 가정내 네트워크의 대역폭이 가지는 한계로 인해 클라이언트-서버 방식을 통한 대용량 멀티미디어 자료들을 장시간 동안 받아야하고 서버에 트래픽이 증가하는 문제점들이 나타나고 있다. 본 논문에서는 서버를 거치지 않고 가정과 가정을 직접 연결하여 자료를 교환할 수 있는 Peer-to-Peer(P2P) 기술이 적용된 자료공유 네트워크 시스템을 설계하였고 서버의 트래픽을 줄이도록 하였으며 Java 언어로 플랫폼 독립적인 시스템을 구현하였다.

• 전기학회논문지
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• 제64권10호
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• pp.1426-1431
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• 2015

Piezoelectric pump can be considered as R-C load and it needs something special driver because the output voltage does not become 0 even though the applied voltage is 0 with common converter. This operating system consists of fly-back converter to increase the input voltage and energy recovery inverter to apply square voltage to the piezoelectric pump. The energy recovery inverter can charge and discharge the energy of capacitive load. In this paper, to enhance performance of the driver, a few elements or circuits are added and modified. To drive the inverter safely, current limit resister is added and adjusted the value to valance the charging and discharging current. In addition, a current limit inductor is added to the input side to limit the input current and enhance the efficiency. Inductor only may make oscillation and another resister is added parallel to the inductor to solve this problem. The converter and inveter are assembled to one board for compactness. The appropriateness is proved with simulation and experiments.