• 조명전기설비학회논문지
• /
• 제12권2호
• /
• pp.7-14
• /
• 1998

본 논문에서는 배전시스템에서의 재폐로에 의한 수용가측 영향을 정량적으로 평가하는 기법을 제시하였다. 제시한 평가기법은 재폐로시 발생하는 순간정전 및 순간전압강하를 예측하고, 전기적 외란에 대해 각 수용가측 민감 장비의 영향을 분석함으로써 수용가측 영향을 평가하였다. 시뮬레이션 결과에서는 재폐로 시도횟수를 늘릴수록 전력공급 신뢰도는 향상되는 반면, 수용가측의 전력품질은 저하됨을 정량적으로 나타내었다. 제시한 평가기법은 재폐로방식의 설정 및 계획수립에 활용할 수 있다.

• 로봇학회논문지
• /
• 제17권4호
• /
• pp.431-437
• /
• 2022

This paper deals with a study on the automatic depalletizing robot for parcels loaded in rolltainer of domestic postal distribution centers. Specifically, we proposed a robot system that detect parcels loaded in a rolltainer with a 3D camera and perform de-palletizing using a cooperative robot. In addition, we developed the task flow chart for parcel de-palletizing and the method of retreat motion generation in the case of collision with rolltainer. Then, we implemented the proposed methods to the robot's controller by developing robot program. The proposed robot system was installed at the Anyang Post Distribution Center and field tests were completed. Field tests have shown that the robotic system has a success rate of over 90% for depalletizing task. And it was confirmed that the average tact time per parcel was 7.3 seconds.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 1997년도 하계학술대회 논문집 F
• /
• pp.2190-2192
• /
• 1997

Recently, the research of the distribution automatic system is increased. Distribution automatic system in local switchgear side usually consists of a switchgear controller and a feeder remote unit. A feeder remote unit (FRU) analyzes remote control order from the sudstation communication control unit(SCCU) located remote position using MODEM and delivers order to a switchgear controller. The each state of a switchgear is also delivered to a SCCU through a FRU. Switchgear controller operates switchgear directly and collects the each state of switchgear. In this system between a FRU and a switchgear controller, there are many functions which is included both of them. In this paper the combined switchgear controller which unified the conventional control functions of a FRU and a swichgear controller is proposed. The combined switchgear controller has many advantages excluding redundancy in system cost, space, control reliability and etc.

• Journal of Advanced Marine Engineering and Technology
• /
• 제24권3호
• /
• pp.106-112
• /
• 2000

Since the oil crisis, we have been concerned about the energy saving techniques of electric generating systems. As a part of the effort to save energy, automatic electric load sharing device was developed. Usually, ship's electric generating system consists of two or three sets of generator. And, electric generating system is operated as single or parallel operation mode according to the demanded electric power. Therefore, it is important to investigate generators operating mode for the supply of required electric power in the ship in order to decrease the operating cost. So, this paper suggests the method to solve the optimal electric load distribution problem by dynamic programming. And, this thesis indicates that the proposed method is superior to the lagrange multiplier's method in obtaining optimal load distribution solution in the ship's electric generating system.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2009년도 추계학술대회
• /
• pp.420-421
• /
• 2009

본 최근 산업이 발전함에 따라 수출입 화물량이 급격하게 증가하고 있으나, 물류처리 시설 능력은 인간의 인력에 의해서 물류의 운반과 분류 및 설치를 수행해 왔다. 그러나 이러한 인력에 의한 물류처리에는 처리물류량과 그 효율성에 한계가 있다. 본 논문에서는 자동화 물류 시스템에 대한 연구를 포함하고 있다. 본 연구는 하드웨어 구조와 소프트웨어 관리 시스템을 포함하고 있다.

• 한국정보통신학회:학술대회논문집
• /
• 한국해양정보통신학회 2009년도 추계학술대회
• /
• pp.900-901
• /
• 2009

본 최근 산업이 발전함에 따라 수출입 화물량이 급격하게 증가하고 있으나, 물류처리 시설 능력은 인간의 인력에 의해서 물류의 운반과 분류 및 설치를 수행해 왔다. 그러나 이러한 인력에 의한 물류처리에는 처리물류량과 그 효율성에 한계가 있다. 본 논문에서는 자동화 물류 시스템에 대한 연구를 포함하고 있다. 본 연구는 하드웨어 구조와 소프트웨어 관리 시스템을 포함하고 있다.

• 한국정밀공학회:학술대회논문집
• /
• 한국정밀공학회 1996년도 춘계학술대회 논문집
• /
• pp.541-545
• /
• 1996

In this paper, The performance and functions of automatic flatness control system installed on the 4 hi-reversing mill and has been investigated under actualconditions. A new automatic flatness control system incorporates a measuring roll for measurement and correction calculations, hydraulic roll benders, selective roll cooling, and a programmable controller for interface and data logging. The test results are as following. The more the exit steel strip thickness is thick, the smaller the I value, and the more it is thin, the larger the I value. And, a complex distribution of strip tension was controlled, for example, not only a quarter buckle but also a simple center wave and edge wave. Because the tension deviation is larger at acceleration speed and deceleration speed than steady speed, so automatic flatness control system of contact type is better to adopt over 450 m/min, automatic flatness control system reduces rapidly large flatness deviation. The maximum I value of strip has been decreased to 13 I, and defects caused by poor flatness have been drastically decreased. And coolant temperature for work roll cooling system on the automatic flatness control system is better to adopt about 50-55 .deg. C.

• 전기학회논문지
• /
• 제64권3호
• /
• pp.365-369
• /
• 2015

In this paper, geographic information system(GIS) for an intelligent power distribution network was implemented with location informations acquired from automatic meter reading system, where the location informations of power line communication(PLC) modems installed at customer side were collected at data concentration units(DCUs) of headend equipment via PLC and then were transmitted to front end processor server. By displaying the connection status of the power distribution network on GIS map, operation of advanced metering infrastructure(AMI) or management of power grid system could be performed intuitionally and in real time, because the configuration state of the power grid could be easily monitored. The feasibility of the proposed system was confirmed with the especially constructed laboratory-level test bed and the verification test of the system will be carried out for a real power distribution network.

• 한국컴퓨터정보학회논문지
• /
• 제21권3호
• /
• pp.33-38
• /
• 2016

Research on the development of key technologies of social work protection and content mashup tools has been carried out as an R&D project granted by the Korea Copyright Commission from 2013. The research aims to provide efficiency of the production environment of the secondary work of the digital contents as well as a systematic solution to the regulation-related problems. The essential features of the distribution management system for cooperative works developed though this study are the decision of the selling prices reflecting various license fee factors and the transparent distribution of the license fees. This paper represents a model which can automatically calculate the amount of the license fee in each derivative stage, independently of the license fee policies on each of the subsidiary contents when N-th works are producted on the basis of a previously approved first work.

• 제어로봇시스템학회:학술대회논문집
• /
• 제어로봇시스템학회 1996년도 한국자동제어학술회의논문집(국내학술편); 포항공과대학교, 포항; 24-26 Oct. 1996
• /
• pp.828-831
• /
• 1996

Radiation monitoring system is needed at nuclear power plant and nuclear facility. Manual survey techniques are commonly used, but they are time consuming and somewhat inaccurate. Automatic radiation surveys are very important because it provides significant savings in men-rem and wages. Unmanned, remote automatic radiation measurement system should be small and light-weighted in order to mount on robotic system. The system we have developed consists of detection parts, signal processing part, interface, and software part. Position information is provided by using of a collimator. The measurement process is achieved by the scanning of detector and image processing techniques are used to display radiation levels. We designed collimators, detectors, signal processing circuit, and constructed prototype system. The goal of this system is the mapping of camera image and radiation level distribution.