https://oak.chosun.ac.kr/handle/2020.oak/19138 2026-05-01T08:45:06Z 2026-05-01T08:45:06Z 변영현 이재진 정하영 한하영 곽근창 https://oak.chosun.ac.kr/handle/2020.oak/19288 2024-05-13T07:18:57Z 2017-12-31T15:00:00Z

Title: 3차 텐서기반 MPCA 방법을 이용한 심전도신호의 개인식별 Author(s): 변영현; 이재진; 정하영; 한하영; 곽근창 Abstract: In this paper, performance of individual identification on electrocardiogram using third-order tensor-based MPCA(Multilinear Principal Component Analysis) is performed. This method preserves the data structure by extracting features directly from the tensor representation without structural transformation of the data due to the vectorization process in order to reduce the dimension. It is also less susceptible to small data problems because it can learn more compact and potentially useful representation, and it can efficiently handle large tensors. Here, the third-order tensor is formed by reordering the one-dimensional electrocardiogram signal into a two-dimensional matrix and then taking the time frame into account. Physionet's PTB(Physikalisch-Technische Bundesanstalt) diagnostic database for performance evaluation is used, and MPCA showed 91.85% accuracy.

2017-12-31T15:00:00Z Man-Suck Oh Eun-A Moon https://oak.chosun.ac.kr/handle/2020.oak/19289 2024-05-13T07:18:57Z 2017-12-31T15:00:00Z

Title: Experimental Study on High Voltage Gain DC-to-DC Boost Type Converter EmployingSwitched-Inductor Author(s): Man-Suck Oh; Eun-A Moon Abstract: The high boost dc-dc scheme is one most of the topic that attracted the attention of researchers because they have some merits over the conventional boost converter. Recently, a high gain DC-to-DC boost type converter has been introduced by employing switched-inductor. The high gain DC-to-DC boost type converter topology is suitable for high gain conversion applications where a varying low dc input voltage is converted to a high stabilized dc output voltage. In the paper, the experimental results of the novel high gain DC-to-DC boost type converter employing switched-inductor are illustrated. Furthermore, an extended high gain DC-to-DC boost type converter is also proposed. Circuit analysis, operating theories of the extended high gain DC-to-DC boost type converter are presented. Finally, the experimental results of the high gain DC-to-DC boost type converter are also presented to validate the performance of the high gain DC-to-DC boost type converter for the practical implementation.

2017-12-31T15:00:00Z 김현철 이동호 https://oak.chosun.ac.kr/handle/2020.oak/19284 2024-05-13T07:18:56Z 2017-12-31T15:00:00Z

Title: 능동 EMI 필터의 향상된 공통모드잡음 검출회로에 관한 연구 Author(s): 김현철; 이동호 Abstract: This paper describes an new topology of the common mode noise detection circuit for improving the noise attenuation performance of the active EMI filter. The proposed Common Mode Detection Circuit is in form of an adder and attenuates a lot of differential mode noise. Therefore, In this paper the proposed common mode noise detection circuit indicates a much higher detection accuracy than the conventional Common Mode Detection Circuit. And MATLAB and OrCAD simulation were used for verification of proposed CM sensing circuit. Finally, the proposed sensing circuit was verified by experimental results.

2017-12-31T15:00:00Z 배현수 백진성 박희망 이선영 김준석 이성준 https://oak.chosun.ac.kr/handle/2020.oak/19287 2024-05-13T07:18:57Z 2017-12-31T15:00:00Z

Title: 극점배치기법을 이용한 계통 연계형 인버터의 사인입력 기준전압 추적 상태궤환 전류제어기 설계 연구 Author(s): 배현수; 백진성; 박희망; 이선영; 김준석; 이성준 Abstract: In this paper, the sine reference tracing state feedback current controller for the grid-connected inverter using the pole placement technique is proposed. The proposed state feedback controller can help to design the systematic current controller by using the pole arrangement technique according to given system requirements on the AC grid voltage conditions. Therefore, the state feedback control algorithm that can track the sign input voltage is designed using the average model of the inverter, and the proposed method are verified from experimental results of the 200W scale-down two-stage photovoltaic power conversion system.

2017-12-31T15:00:00Z