• 전기학회논문지
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• 제60권5호
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• pp.913-920
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• 2011

Distribution systems for operating the various systems should be operated organically. Distribution systems for organic operations extend the functionality of the system and system integration for the extension is doing. However, in systems integration for each unique non-standard definition of linkage and exchange systems are used. Non-standard definition of a unique linkage and exchange systems in the maintenance and expansion will result in many negative results. To solve these problems, the system and the exchange of information about the links between systems should define standards. IEC (International Electrotechnical Commission) power to solve these problems in the field of the Common Information Model (Common Information Model, CIM) standard (IEC61970, IEC61968) is defined as the transmission and distribution system integration and standardization for the exchange of information. In this paper, standardized system for building CIM-based distribution automation system should describe the process of building. In addition, the process of establishing a common information model needed (CIM) defined and associated services for a defined set of models is proposed in the standardization process.

• 한국화재소방학회논문지
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• 제31권5호
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• pp.78-86
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• 2017

우리나라의 재난환경은 산업고도화 및 도시노후화의 영향으로 인하여 점차 다양하고 복잡한 양상으로 전개되고 있다. 따라서 컨트롤타워와 현장인원간에 재난현장의 각종 정보를 신속하고 정확하게 공유할 수 있는 재난통신체계의 확보는 재난대응의 성공을 위하여 그 어느 때보다 절실히 요구된다. 본 연구는 재난관리 선진국인 미국의 국가재난관리체계, 재난통신 운영체계 및 표준운영절차 분석을 통해 우리나라 재난통신체계의 개선책을 다음과 같이 제안한다. 첫째, 재난통신조직이 보다 체계화되어야 한다. 중앙정부 재난통신조직과 지방정부 재난통신조직은 각각 상이한 역할 및 목표에 따라 운영되어야 하며, 상호운영성에 의거하여 유기적으로 공조해야 한다. 둘째, 재난통신 협의체는 재난 관련단체의 대표자들로 구성되어야 하며, 전국단위 및 지방단위로 각각 구성 및 운영되어야 한다. 셋째, 재난통신의 목표를 달성하기 위한 표준운영절차에는 운영적 요소와 기술적 요소가 모두 포함되고 각 재난통신체계 구성원들의 역할과 책임이 명확하게 수립되어야 한다. 이러한 개선책은 재난통신체계가 현장에서 정확하게 작동되도록 할 것이며, 이는 재난대응의 성공확률을 향상시킬 것으로 예상한다.

• 대한전기학회논문지
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• 제43권5호
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• pp.770-778
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• 1994

In this paper, the photovoltaic inverter system with instantaneous sinusoidal current tracking control is proposed to improve the utilization factor of photovoltaic power system which would be connected utility interactive system. The proposed inverter is designed to track maximum power point by two-state value control method and utility interactive operation, and to decrease output harmonics component. Optimal operating region is described by state space averaging method, and present tracking condition of standard guide line. The experimental result shows the effectiveness of inverter system using the instantaneous control method.

• 한국컴퓨터정보학회논문지
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• 제10권2호
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• pp.11-19
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• 2005

본 논문에서는 보안 운영체제의 성능 평가 모델 및 시나리오에 대해서 기술하고 있으며, 보안 운영체제 성능 평가 방법을 이용하여 상용 보안 운영체제의 성능을 분석하였다. 다양한 성능 분석 툴을 이용하여 보안 운영체제의 오버헤드 결과를 자세히 분석하고 있다. 본 연구를 통해서 보안 운영체제와 일반 운영체제의 성능 비교가 가능할 것이며, 보안 운영체제에 다양한 보안 정책이 추가되었을 때와 그렇지 않은 경우 직접적인 성능의 차이를 볼 수 있게 된다. 본 연구결과는 보안 운영체제 구매자, 평가자 및 개발자들에게 가이드라인이 될 수 있으며, 보안 운영체제의 성능 평가에 대한 기초 자료로 활용 될 수 있다

• 한국BIM학회 논문집
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• 제4권1호
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• pp.8-12
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• 2014

This research and project is going on the Korean government. The objective of project is that developing total energy management solution. So, this paper is going to introduce a proposal that energy total operating system development using spatial information visualization and energy monitoring. It could efficiently operate the building energy wirelessly controling cooling/heating, lighting, air-conditioning and geothermal system. The metering data is collected to total database. The data is linked to BAS gateway, which is connected the device by the standard protocol.

• 산업경영시스템학회지
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• 제32권2호
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• pp.104-111
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• 2009

Recently, it is becoming the big issue internationally where the safety problem of the industrial product including the foodstuffs. The way is able to construct the trust of the consumer that the external specialized agency independently operating confirms what production process of the product keep a standard or a technical regulation. This is conformity assessment. In the many countries, agencies entrusted government authority do conformity assessment. Specially, 'certification' in one form of conformity assessment process is operating a certification system at the government and the non-government body in Korea. Also non-government certification is fixed by trusted system from consumer. He has to prepare a competitive power in liberalization time, so need the countermeasure urgently. This study purpose that develops strategy so as to activating of non-government certification system in gist of the origination called 'self-control.' I present activation strategies using SWOT/AHP analysis.

• 제어로봇시스템학회논문지
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• 제14권11호
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• pp.1117-1123
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• 2008

This paper implements dual-kernel system using standard Linux and real-time embedded Linux for the real-time control of intelligent robot systems. Such system provides more useful services including standard Linux thread that is easy to implement complicated tasks and real-time tasks for the deterministic response to velocity control. Here, an open source real-time embedded Linux, XENOMAI, is ported on embedded target board. And for interfacing with motor controller we adopted a real-time serial device driver. The real-time task was implemented with a priority to keep the cyclic control command for trajectory control. In order to validate deterministic response of the proposed system, the performance measurement of the delay in performing trajectory control with feedback loop is evaluated with non real-time standard Linux. The proposed software architecture is anticipated to take advantage of features in both standard Linux and real-time operating systems for the intelligent robot systems.

• 대한안전경영과학회지
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• 제17권3호
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• pp.221-229
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• 2015

The economy is advancing at quite a bit is the role of the Distribution Center, a rise is evolving and mullyuryang Any existing storage facilities were not creating added value from contact with the customer service centers play the role. In order to increase its market competitiveness also pl approach to three in order to enforce cost savings and run. But by industry, the goods, operating characteristics of the cooperating in order to differentiate themselves with the operating process of improvement of operating system, including costs and took lots of time of service.Quality is lower ; all were missing. Such logistics centers, standard management model to address a little bit problem with highest academic. I want to try send it to, each product-category's industrial and business forms, standardisation is really a difficult situation, current study is further progress all you if you are The process managed to turn component is sure that we will be able to be judged.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.707-712
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• 1991

In machining a part in CAD/CAM system, it is required that the drawing information should be automatically generated, modified, deleted, and thus be used as an general information throughout the entire manufacturing process. This research addresses basic entities(point, line, circle, arc) for design feature and combination of this features, based on GT concepts, with minimum user's manual input. This paper deals with the generalization of operating system which can cover the s parts which appears in mechanical part handbook and the basic constitutional part of sold base. The system developed shows a strong application impact on automatic process planning system of medium - size injection sold companies.

• 시스템엔지니어링학술지
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• 제14권2호
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• pp.73-82
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• 2018

In this work, a hardware based cryptographic module for the cyber security of nuclear power plant is developed using a system engineering approach. Nuclear power plants are isolated from the Internet, but as shown in the case of Iran, Man-in-the-middle attacks (MITM) could be a threat to the safety of the nuclear facilities. This FPGA-based module does not have an operating system and it provides protection as a firewall and mitigates the cyber threats. The encryption equipment consists of an encryption module, a decryption module, and interfaces for communication between modules and systems. The Advanced Encryption Standard (AES)-128, which is formally approved as top level by U.S. National Security Agency for cryptographic algorithms, is adopted. The development of the cyber security module is implemented in two main phases: reverse engineering and re-engineering. In the reverse engineering phase, the cyber security plan and system requirements are analyzed, and the AES algorithm is decomposed into functional units. In the re-engineering phase, we model the logical architecture using Vitech CORE9 software and simulate it with the Enhanced Functional Flow Block Diagram (EFFBD), which confirms the performance improvements of the hardware-based cryptographic module as compared to software based cryptography. Following this, the Hardware description language (HDL) code is developed and tested to verify the integrity of the code. Then, the developed code is implemented on the FPGA and connected to the personal computer through Recommended Standard (RS)-232 communication to perform validation of the developed component. For the future work, the developed FPGA based encryption equipment will be verified and validated in its expected operating environment by connecting it to the Advanced power reactor (APR)-1400 simulator.