• 전력전자학회:학술대회논문집
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• 전력전자학회 2001년도 Proceedings ICPE 01 2001 International Conference on Power Electronics
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• pp.751-755
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• 2001

This paper presents the parameter measurement methods for high performance drive of induction motors. The proposed methods are selected by considering the factors that affect accuracy of measurement. Each method are refined to be adequate for measurement of each motor parameters. Proposed methods are easy to implement and only require inverter-motor system, which are important for practical application.

• 한국품질경영학회:학술대회논문집
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• 한국품질경영학회 2004년도 품질경영모델을 통한 가치 창출
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• pp.307-312
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• 2004

Contamination of industrial sites has happened by a variety compounds. Petroleum hydrocarbons, which are readily biodegradable, are reported principle contaminats in most industrial sites. Therefore, the use of biological processes will be a promising technology for remediation of industrial sites. This paper addresses the possible use of biological processes in remediation of contaminated industrial sites and discusses the background and main streams of the process. The paper also characterizes representative biological systems developed for application.

• 산업경영시스템학회지
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• 제13권21호
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• pp.43-50
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• 1990

Fault tree analysis(FTA) is available to the engineer for determining reliability of complex industrial safety system. Therefore quantitative aspects of FTA greatly multiply its power this paper proceeds of presenting the methodology of FTA, including an approach to constructing in fault tree. A working guide to the use of FTA for the purpose of cost/benefit determination in industrial safety system is given. Finally, an analytic method for uncertainty analysis of the top event of a complex system is described.

• 한국신뢰성학회지:신뢰성응용연구
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• 제8권2호
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• pp.61-73
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• 2008

Reliability program in one of the most efficient tools for cost saving during the acquisition process including alternatives for design configurations, operation concepts, maintenance concepts. Industrial reliability centers have already equipped with infrastructure such as reliability standards, reliability apparatus. In this study revitalizing plans are proposed to apply industrial reliability technology to national defense technology.

• 한국산학기술학회논문지
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• 제12권6호
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• pp.2793-2800
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• 2011

본 연구에서는 범용 이동정보통신기기인 스마트폰을 플랫폼으로 하는 차선이탈경보 애플리케이션을 개발하고 최적화하였다. 최근 안전주행지원 솔루션 중 하나인 차선이탈경보시스템이 상용화되고 있지만, 고성능의 전용 플랫폼을 필요로 하기 때문에 시장에 쉽게 진입하지 못하고 있다. 본 연구에서는 스마트폰인 iPhone 3GS를 플랫폼으로 하는 차선이탈경보 애플리케이션으로 개발하고 처리 속도를 최적화하였다. 효율적인 영상처리를 위해서 OpenCV를 사용하였고, 차선인식을 위해서는 차선의 기하학적 특징을 고려한 Hough Transform 기반의 휴리스틱 알고리즘이 고안되었다. 차선이탈경보 애플리케이션은 매킨토시 컴퓨터에서 Xcode 3.2.4 개발툴을 사용하여 개발되었고, 스마트폰에 다운로드하여 실제 도로에서 실험하였다. 실험결과 1.52fps의 처리 속도를 보였고, 최적화 작업을 통해 처리 속도를 3.84fps까지 향상시켰다. 향후 차선인식 알고리즘 보완, 추가 최적화 작업 및 고성능 스마트폰 플랫폼 채택 등을 통해 스마트폰용 차선이탈경보 애플리케이션을 상용화할 계획이다.

• 전기저널
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• 4호통권100호
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• pp.48-51
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• 1985

• 멤브레인
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• 제1권1호
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• pp.93-93
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• 1991

• 한국물환경학회지
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• 제26권1호
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• pp.1-9
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• 2010

Technology-Based Effluent Limitations (TBELs) is a permit limits for a pollutant that is based on the capability of a treatment technology to reduce the pollutant to a certain concentration. Widely practiced for regulations of industrial wastewater in US, TBELs has been accepted as an effective means that can achieve balanced goals between complete elimination of pollutants discharge and economic feasibility for industries. The review of TBELs application in US and the applicability of TBELs to the domestic industry categories was given in three papers. In the first paper, the development and practices of TBELs in US were reviewed including case studies. The developments of TBELs in US in the four major categories, the metal products & machinery, the petroleum refining, the porcelain enameling and the meat & poultry products were reviewed. The applicability of TBELs to the domestic industrial categories was also assessed. In the second paper, the pollution loads analysis for domestic industrial wastewater was conducted based on risk assessment indicator using Toxic Weighting Factors (TWFs). This is an essential part to determine the priority of TBELs application for the domestic industrial categories. In the last paper, the application of TBELs to the domestic industries was demonstrated through a case-study for the pulp/paper/paperboard category. Direct application of TBELs of US into the Korean regulation system may not be desirable because the specific goals and the environment for the regulations for the two countries may not be identical. For example, unlike US, Korea does not adopt the individual permit system for pollution sources. However, among the unproductive and exhaustive controversies over the uniform regulations regardless of the industrial categories in Korea, the introduction of the principles of TBELs are inevitable and more extensive study for applications of TBELs optimized for Korean regulation system will be necessary.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2007년도 7th International Meeting on Information Display 제7권2호
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• pp.1220-1224
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• 2007

The effects of plasma damages to the organic thin film transistor (OTFT) during the fabrication process are investigated; metal deposition process on the organic gate insulator by plasma sputtering mainly generates the process induced damages of bottom contact structured OTFTs. For this study, various deposition methods (thermal evaporation, plasma sputtering, and neutral beam based sputtering) and metals (gold and Indium-Tin Oxide) have been tested for their damage effects onto the Poly 4-vinylphenol(PVP) layer surface as an organic gate insulator. The surface damages are estimated by measuring surface energies and grain shapes of organic semiconductor on the gate insulator. Unlike thermal evaporation and neutral beam based sputtering, conventional plasma sputtering process induces serious damages onto the organic surface as increasing surface energy, decreasing grain sizes, and degrading TFT performance.

• 전자통신동향분석
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• 제36권5호
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• pp.92-102
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• 2021

Owing to various restrictions in-field application, the low-speed, low-power-based industrial Internet-of-Things (IoT) network built in extremely harsh industrial environment sites requires multi-hop, channel hopping, and low-latency transmission characteristics. In the past, wired networks were used in industrial facilities; however, network technologies based on the Industrial IoT Network standard standardized for industrial applications, such as WirelessIO link, WirelessHART, SmartMesh, and eStar Link satisfy industrial requirements. Recently, the use of industrial IoT networks in industrial facilities has rapidly expanded. This paper covers the developments in industrial IoT network technologies and summarizes the major industrial IoT standard technologies that meets the requirements of industrial sites.