• 대한전기학회:학술대회논문집
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• 대한전기학회 1991년도 추계학술대회 논문집 학회본부
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• pp.370-373
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• 1991

This paper considers the linear multivariable model following servo system synthesis method in which linear optimal regulator problem is used to design controllers that make the response of the plant should be kept close to a specified ideal response of the model. The characteristics of this system is that the constructed system is robust in the presence of the constant disturbances or the parameter perturbations of the plant. Especially, the steady state offset is excluded for the ramp response of the model by direct feedforward compensator from the reference input.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2008년도 춘계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.137-139
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• 2008

This paper presents how to make controller using frequency-response in power electronics. First, To make controller, a frequency response of plant are showed and then a controller is made as the procedure. That way give the easy method to make controller for power electronic converter.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 추계학술대회 논문집 전기기기 및 에너지변환시스템부문
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• pp.129-131
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• 2007

BLDC 모터의 진동 및 소음의 원인인 영구자석과 슬롯 개구부 형상에 의한 코깅토크를 저감시키기 위하여, RSM(Response Surface Method)과 FEM(Finite Element Method)를 이용하여 영구자석의 형상을 최적화 하였다. 최적화 과정은 총 2단계에 걸쳐 진행되었다. 1단계에서는 영구자석의 자극간격을 구하고, 2단계에서 자석의 형상을 변화시저 최적화한 결과, 최적화 전 후의 코깅도가, 최대 0.051[N.m]에서 0.029[N.m]로 약 50% 감소하였다.

• 전기학회논문지
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• 제62권8호
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• pp.1074-1079
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• 2013

Demand response(DR) is potential generation alternative to improve the reliability indices of system and load points. However, when demand resources scheduled in DR market fail to reduce demand, it can create new problems associated with maintaining a reliable supply. In this paper, a reliability model of demand resource is constructed considering customers' behaviors in the same form as conventional generation units, where availability and unavailability are associated with the simple two-state model. As a result, the generalized reliability model of demand resources is represented by multi-state model.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2006년도 6th International Meeting on Information Display
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• pp.1442-1446
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• 2006

In this paper, the response surface modeling of the pretilt angle control in the nematic liquid crystal (NLC) on the homogeneous polyimide surface with different surface treatment is investigated The rubbing strength and the hard baking temperature are considered as input factors. After the design of experiments is performed, the process model is then explored using the response surface methodology. The analysis of variance is used to analyze the statistical significance and the effect plots are also investigated to examine the relationship between the process parameters and the response.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1995년도 추계학술대회 논문집 학회본부
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• pp.358-360
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• 1995

PZT powders were prepared by the molten salt synthesis method. The porous PZT specimens were prepared from a mixture of PZT and polyvinylalcohol(PVA) powders by BURPS(Burnout Plastic Sphere) technique. The pulse-echo response of porous PZT transducer with various PVA wt.% were studied. The fall time of pulse-echo response of porous PZT transducer was shorten to that of solid PZT-maded transducer. Therefore, a good transmitting and receiving properties could be obtained. The distance between transducer and reflector was in good agreement both solid PZT and porous PZT fabricated transducer.

• 전기학회논문지
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• 제64권7호
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• pp.978-983
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• 2015

This paper presents Frequency Bias setting for the adequate AGC(Automatic Generator Control) operation based on the frequency response of power system in Korea. AGC frequency control recovers the frequency up to 60Hz following a primary control when the frequency suddenly drops due to a fault in power system. AGC can compensate an appropriate amount of generation by calculating ACE(Are Control Error) from the frequency deviation with the AGC frequency bias set from the actual frequency response in power systems. An appropriateness of the proposed AGC bias setting is verified through case studies employing the simulation model.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 하계학술대회 논문집 A
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• pp.67-69
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• 1999

This study deals with the unbalance response of a rotor of Switched Reluctance Motor(SRM) due to unbalanced mass. The method to analyze SRM with rotor-bearing system is based on an extension of the well-known Transfer Matrix Method(TMM). Most of the calculation results present the natural frequencies as a function of the speed of rotation which yields critical speeds and response to unbalanced mass.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2007년도 제38회 하계학술대회
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• pp.860-861
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• 2007

This paper deals with optimum design criteria to minimize torque ripple of concentrated winding Synchronous Reluctance Motor (SynRM) using Response Surface Methodology (RSM). The feasibility of using RSM with the finite element method(FEM) in practical engineering problem is investigated with computational examples and comparison between the fitted response and the results obtained from an analytical solution according to the design variables of stator and rotor in concentrated winding SynRM (6slot).

• 인터넷정보학회논문지
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• 제18권5호
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• pp.69-77
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• 2017

본 논문에서는 재난상황에서 딥러닝과 증강현실 기술을 활용한 재난대응 방안과 그에 따른 네트워크 자원 확보 방안을 제안한다. 딥러닝과 증강현실 기술의 특징과 현황을 파악하고, 재난분야와의 연관성에 관하여 설명한다. 딥러닝 기술을 사용하여 재난 상황을 정확하게 인지하고 관련 재난 정보를 증강현실로 구현하여 재난대응 현장 및 통합지원본부, 재난안전대책본부 등에 제공함으로써 재난대응 역량을 강화할 수 있다. 각종 재난사례 중 화재상황을 중점으로, 딥러닝 기반 화재상황 인식 및 증강현실 정보제공을 통해 효과적으로 재난대응 역량을 강화할 수 있는 방안을 제시한다. 마지막으로, 본 논문의 재난대응 방안을 활용하기 위한 네트워크 자원 확보 기법을 제시한다.