• 대한기계학회논문집
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• 제18권4호
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• pp.805-815
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• 1994

The development of automatic production systems has a trend toward Computer Integrated Manufacturing System(CIMS) in recent years. In hardware configuration, CIMS are composed of intelligent CAD/CAM work stations, multifunction CNC machining centers including material handling systems. The DNC systems present the key element of automation hierarchy in a FMS. A DNC system is one which connects a number of numerically-controlled machines to a common memory in a digital computer for part program storage with provision for on-demand distribution of part program data to machines using communication in hierarchical structure of central computer, control computer and cell controller. This paper describes the development of Behind-the-Tape-Reader(BTR) type DNC system using CYBER 180-830 as a central computer and IBM PC-386 cell control computer and NC lathe with FANUC 5T NC controller. In this system, the connection between central computer and cell control computer is done via RS-232C serial interface board, and the connection between cell control computer and FANUC 5T controller is done via parallel interface board. The software consists of two module, central computer communication module for NC program downloading and status uploading, NC machine running module for NC operating.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1998년도 추계학술대회 논문집 학회본부A
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• pp.226-228
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• 1998

Current power systems are integrated and operated in the form of EMS/SCADA with the development of computer and communication. With this EMS/SCADA system, the production, transmission and distribution of power are effectively operated. But if the communication protocol are different from each other, it is difficult to integrate the whole system. To solve this problem, Electric Power Research Institute (EPRI) issued new standard communication protocol between control centers named Inter-Control Center Protocol (ICCP). ICCP specifies the use of Manufacturing Message Specification(MMS) for the messaging services needed by ICCP in layer 7 and support the communication between heterogeneous control centers. This study deals the characteristics of ICCP, relation between ICCP and MMS and also implements the data exchange between control centers using ICCP.

• ETRI Journal
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• 제30권5호
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• pp.696-706
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• 2008

With the increasing need for intelligent environment monitoring applications and the decreasing cost of manufacturing sensor devices, it is likely that a wide variety of sensor networks will be deployed in the near future. In this environment, the way to access heterogeneous sensor networks and the way to integrate various sensor data are very important. This paper proposes the common system for middleware of sensor networks (COSMOS), which provides integrated data processing over multiple heterogeneous sensor networks based on sensor network abstraction called the sensor network common interface. Specifically, this paper introduces the sensor network common interface which defines a standardized communication protocol and message formats used between the COSMOS and sensor networks.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1991년도 한국자동제어학술회의논문집(국내학술편); KOEX, Seoul; 22-24 Oct. 1991
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• pp.793-798
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• 1991

Implementation of AGVS (Automated Guided Vehicle System) in CIMS (Computer Integrated Manufacturing System) generally requires substantial study to optimize design and performance of the guide path. Traditional mathematical approaches have been used with limited success to analyze AGVS. These approaches, however, do not provide a practical opportunity to use by path designers. This paper presents a new approach based on Jules in designing and assessing AGV path to have better design of the closed-loop layout. A framework for the approach is proposed and a case study is reported to demonstrate the framework. Deletion of seldom used paths and addition of bypasses to solve the congestion problem are conducted automatically through simulation expefiments. To visualize die results a graphic control program is developed and integrated with AutoMod/AutoGram simulation package.

• 한국정밀공학회지
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• 제17권10호
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• pp.89-94
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• 2000

Engineering database for CIM of injection mold production has been developed to manage design information and parameters of injection mold. The database has direct connection with product data management system and management database. Design specifications are generated in initial stage of mold design with integration of management information. Design parameters and bill of materials for mold base parts are generated during the CAD process and transferred to the manufacturing database and procurement system. Standard modules for parts and mold base are constructed using national standard and legacy data of industries. The engineering database provides important information route for CIM of injection mold design and production.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 1996년도 춘계공동학술대회논문집; 공군사관학교, 청주; 26-27 Apr. 1996
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• pp.635-638
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• 1996

During the last decades, tremendous achievements have been made in the application of Computer-Integrated-Manufacturing(CIM) technologies to the real business fields. It has been recognized as a primary success factor that one should establish its own CIM environments, cultural backgrounds and technology levels. In this paper, an attmpt is made to accelerate the modernization process in a nation-wide range of industries, and so improve the competitiveness of our manufacturing industry as a whole. First of all, various korea-specific CIM concepts which have already been pointed out by industrial CIM practitioners are consolidated. Three major views (activity-based, function-based, and policy-based views) that could be included in the Korea CIM reference model have been derived from the detailed analysis of the technical survey. Twenty-nine research themes with higher priorities in each view are selected.

• 한국지능시스템학회논문지
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• 제7권2호
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• pp.79-86
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• 1997

자동화기술 및 정보통신의 급속한 발전 등의 환경 변화에 따라 컴퓨터를 기반으로 하는 통합생산 시스템 구축의 필요성이 급격히 증가하고 있다. 본 논문에서는 컴퓨터 통합생산(CIM)시스템을 구축하기 위한 제안 요구서에 따라 각 업체에서 제안한 업체별 구현방법을 효율적으로 평가하기 위하여 퍼지집합을 이용한 컴퓨터통합생산시스템의업체별 평가 방법을 제안한다.

• 한국정밀공학회지
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• 제11권5호
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• pp.12-24
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• 1994

최근 수년간에 걸쳐 이루어진 센서기술의 발달과 컴퓨터를 이용한 데이타 처리능력의 혁신적인 발전은 대형의 복잡한 시스템을 실시간으로 운용하는데 있어서 막대한 양의 정보를 적절히 처리할 수 있는 기술을 요구한다. 예를 들어, 제철 또는 화학공장 공정제어에 있어서 여러 단계의 복잡한 공정의 상태에 관련된 정보는 다양한 센서들에 의하여 감지되어 제어컴퓨터에 전달된다. 또한 제어컴퓨터에서 생성되는 데이타는 자동화장비들의 각 구동장치로 분배된다. 이와 더불어 전체공정의 운용 및 관리와 제품의 품질 검사 및 시험에 관련된 데이타들도 적절히 전송되어야 한다. 또한 공장의 생산자동화 시스템에서도 수많은 로봇, PLC, CNC,AGV,켠베이어, 자동창고 등 자동화장비관련장비들의 시간적,공간적인 작업상태와 작업환경에 대한 무수한 정보들은 다양한 센서들에 의하여 감지되어 제어컴퓨터로 전달되어야 한다. 이러한 막대한 양의 데이타들을 적시에 수집하여 가공한 후 적시, 적소에 분배해 줄 수 있는 데이타 전송기술의 확보는 미래의 첨단생산시스템으로 인식되는 CIM(Computer Integrated Manufacturing)및 분산제어시스템(Distributed Control System)의 구축을 위한 선결과제라 할 수 있다. 이러한 문제들은 발전소, 최신예 항공기와 인공위성 등과 같이 고도의 제어기능과 매우 높은 신뢰도를 요구하는 시스템들에서도 마찬가지로 제기된다.

• International Journal of Precision Engineering and Manufacturing
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• 제2권4호
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• pp.12-22
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• 2001

Vehicle driving simulators hale been used in the development and modification of models. A simulator can reduce cost and time through a variety of driving simulations in the laboratory. Recently, driving simulators have begun to proliferate in the automotive industry and the associated research community. This paper presents the hardware and software developed fur a driving simulator of construction vehicles. This effect involves the real-time dynamic analysis of wheel-type excavator, the design and manufacturing of the Stewart platform, an integrated control system of the platform, and three-dimensional graphic modeling of the driving environments.

• 산업경영시스템학회지
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• 제30권2호
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• pp.99-105
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• 2007

According to the automated manufacturing processes followed by the development of computer manufacturing technologies, products or quality characteristics produced on the processes have measured and recorded automatically. Much amount of data daily produced on the processes may not be efficiently analyzed by current statistical methodologies (i.e., statistical quality control and statistical process control methodologies) because of the dimensionality associated with many input and response variables. Although a number of statistical methods to handle this situation, there is room for improvement. In order to overcome this limitation, we integrated data mining and robust design approach in this research. We find efficiently the significant input variables that connected with the interesting response variables by using the data mining technique. And we find the optimum operating condition of process by using RSM and robust design approach.