• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 1990년도 한국자동제어학술회의논문집(국제학술편); KOEX, Seoul; 26-27 Oct. 1990
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• pp.1200-1203
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• 1990

Recently, the CAD/CAM system to automatically design and process are used in almost every industry world. We designed an original digitizer system to digitize a real size car drawing. We succeeded in the development of super large size Laser Digitizer System (LDS) which has input area of 2m by 6m, resolution of 0.1mm and accuracy of .+-.0.5mm. This Laser Digitizer System can use in design of cars, ships, planes and big maps. Also can use in sensing the position of nozzle head of laser processing system, and so on.

• 한국조리학회지
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• 제9권4호
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• pp.54-68
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• 2003

This study aims at efficiency of kitchen management by adoption of a systematic central kitchen and conversion of conventional kitchen to convenience kitchen at ' H ' restaurant. First, integrated menu control of banquet buffet functions became more competitive with quality menu and eventually brought about guests satisfaction. Second, systematic central kitchen made possible standardization and mass production through simplified production line. Efficiency through quick service and shortened preparation time was realized, and food materials were recycled effectively at the same time. Integrated ordering lowered purchasing price and built an efficient cost control system. Third, conversion of conventional kitchen to convenience kitchen and strengthened central kitchen system facilitated agreeable work conditions and optimal work flow with butcher's and even sauce making utensils. Fourth, integrated supply system of buffet menu and sauce from western restaurants saved about 520 million won of labor costs. Last, one integrated kitchen out of two was easier in sanitation control with pleasant restaurant space. Sharing kitchen facilities and equipments also saved about 30% of maintenance fee. Power, water, and gas were also saved and eventually curtailed overall expenses.

• 한국인터넷방송통신학회논문지
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• 제14권6호
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• pp.183-188
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• 2014

최근 모바일 컴퓨팅과 센서 기술의 급속한 발전과 더불어, 유비쿼터스 센서 네트워크(USN) 관련 응용 기술이 다양한 관련 기술과의 융합을 통해 활발하게 확산되고 있다. 이러한 응용들은 대부분 다양한 센서를 통한 주변의 상황정보를 이용하여 적절하게 제어하고 시스템을 모니터링 하는데 그 목표를 두고 있다. 하지만 센서들로부터 발생하는 데이터들은 큰 용량과 다양성으로 인해 정확하고 유연한 통제나 모니터링을 하기가 쉽지 않은 상황이다. 본 논문에서는 센서 네트워크를 통해 센싱된 데이터를 기반으로 상황정보를 적절하게 반영하여 유연하게 시스템을 제어하고 모니터링할 수 있도록 USN에서의 퍼지 로직 기반 중앙 통제시스템을 설계하고 구현하였다. 제안한 시스템은 실제 테스트 베드를 구축하여 운영 중인 USN기반 가로등 제어 시스템에 적용하여 그 성능을 모의실험을 통해 가로등의 소비 전력량에 대한 에너지 절감 영향을 비교 평가하였다.

• 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.

• International Journal of Aeronautical and Space Sciences
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• 제12권2호
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• pp.179-189
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• 2011

In this paper, robust adaptive control design problem is addressed for a class of parametrically uncertain aeroelastic systems. A full-state robust adaptive controller was designed to suppress aeroelastic vibrations of a nonlinear wing section. The design used leading and trailing edge control actuations. The full state feedback (FSFB) control yielded a global uniformly ultimately bounded result for two-axis vibration suppression. The pitching and plunging displacements were measurable; however, the pitching and plunging rates were not measurable. Thus, a high gain observer was used to modify the FSFB control design to become an output feedback (OFB) design while the stability analysis for the OFB control law was presented. Simulation results demonstrate the efficacy of the multi-input multi-output control toward suppressing aeroelastic vibrations and limit cycle oscillations occurring in pre- and post-flutter velocity regimes.

• International Journal of Aeronautical and Space Sciences
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• 제13권2호
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• pp.210-220
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• 2012

The model-free control of aeroelastic vibrations of a non-linear 2-D wing-flap system operating in supersonic flight speed regimes is discussed in this paper. A novel continuous robust controller design yields asymptotically stable vibration suppression in both the pitching and plunging degrees of freedom using the flap deflection as a control input. The controller also ensures that all system states remain bounded at all times during closed-loop operation. A Lyapunov method is used to obtain the global asymptotic stability result. The unsteady aerodynamic load is considered by resourcing to the non-linear Piston Theory Aerodynamics (PTA) modified to account for the effect of the flap deflection. Simulation results demonstrate the performance of the robust control strategy in suppressing dynamic aeroelastic instabilities, such as non-linear flutter and limit cycle oscillations.

• 대한전기학회:학술대회논문집
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• 대한전기학회 1999년도 추계학술대회 논문집 학회본부 B
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• pp.680-682
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• 1999

This paper presents a design of central monitoring and control system using duplex redundancy modular. Communication protocol used fieldbus and application program for monitoring and control have been developed by CIMON. The performance and convenience of developed system is demonstrated cremation furnace.

• 한국산업융합학회 논문집
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• 제7권2호
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• pp.207-213
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• 2004

This paper describes the development of Behind-Tape-Reader (BTR) type DNC system using CYBER 180-830 as a central computer and IBM PC-AT 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 that 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.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2003년도 추계학술대회 논문집(III)
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• pp.176-182
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• 2003

Subway is working in the construction of station and wayside equipment which was controlled by central and local control operating system for more efficient management. Traffic controlled by functional integration to be interlocked but each part is constructed and operated individually that is not efficient. Therefore, this paper offer to plan of integrating central and local system in one place of each feild. Functional integration plan will help central and local system to link strengthening. This is also offering to integrating central of an officer in command and integrating local of control station and office.

• 생명과학회지
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• 제7권4호
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• pp.276-281
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• 1997

This study was investigated to determine whether nicotine causes the morphological changes and expression of heat shock protein(HSP) 70 in the central nervous system of rat embryo. The pregnant rats were injected s.c. twice daily with 3 mg nicotine per 100g body weight from day 0 to 14 of gestation and embryos were removed on gestation day 15. As morphological changes, retardation of cell proliferaton was observed in the telencephalon of nicotine-treated groups and no changes in the other region were found. Minimal HSP 70 was expressed over chole central nervous system was similar between control and nicotine-treated group, the expression of blood cells in the meinges and chroid plexus was significantly greater in nicotine-treated group than in control.