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300kHz ZVS Full Bridge PWM 컨버터에 관한 연구
주형준(H.J Joo),김의찬(E.C Kim),최재동(J.D Choi),손승찬(S.C Son),성세진(S J Seong) 전력전자학회 1997 전력전자학술대회 논문집 Vol.1997 No.-
This Paper is concerned on developing DC-DC converter using ZVS-FB-PWM Converter. The converter output is 28V and regulated by phase shift control methode. MOSFET is used by the main switching device and high frequency transfomer is made for operating at 300kHz swiching frequency When the load vary widely, converter's ZVS characteristic is expressed by experiment result
탄성체-삼투압 약물주입펌프 성능 최적화를 위한 시뮬레이션
김동선(D. S Kim),강성민(S. M. Kang),김의찬(E. C. Kim),최성욱(S. W. Choi) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Drug infusion pump is classified as electronic and mechanical. Electronic drug infusion pump precision control is possible by using a motor, but it is not easy to carry and it is expensive. The mechanical drug infusion pump can be portable and operations to use the easy. However, mechanical infusion pump flow rate is not constant. Therefore, there was a lot of attempts to solve the problems of the Mechanical infusion pump, there is a combination of elastomeric and osmotic pressure of the drug infusion. but this of elastomeric and osmotic infusion pumps is important to elasticity and concentration of difference because of injecting by interaction between elastic and osmotic pressure. Therefore, in this paper indicates interaction between the elasticity and concentration differences. Performance of the infusion pump is optimized by simulation programs.
대동물 실험을 통한 공압식 박동형 심실보조장치의 박출량 추정 시스템에 대한 유효성 검증
강성민(S.M.kang),김동선(D.S.Kim),김의찬(E.C.Kin),최성욱(S.W.Choi) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
It is necessary to implant a separate device through the skin to measure the flow rate that can indicate the operation status of a ventricular assist device. This has some limitations: high risk of infection and the need to install equipment that can communicate with the implanted device. So this study aims to make in-vivo assessment of blood flow rate estimation using pre-development cardiac output estimation system. The blood flow rate measured in-vivo by an ultrasonic blood flow meter and that based on the inner pressure variation were proved to be similar to each other. Therefore, it is expected that the blood flow rate estimation technique in this study will be able to estimate the flow rate without separate measurement equipment after the implantation of a ventricular assist device.