• Proceedings of the Korean Operations and Management Science Society Conference
• /
• 1992.04b
• /
• pp.570-570
• /
• 1992

• Journal of the military operations research society of Korea
• /
• v.35 no.2
• /
• pp.63-76
• /
• 2009

The rapid development of IT and Science & Technology has greatly influenced the aspect of future warfare. Accordingly, the Army Forces require efficient logistics support, hence the importance of AS/RS has steadily increased. This research validated mathematical propriety of the management problem of S/R machine in AS/RS with mathematical analysis based on its travel time and simulation analysis using Automod. After all, we could improve the performance of S/R machine based on its dwell point and turn-over distribution.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 2005.06a
• /
• pp.10-14
• /
• 2005

This report deals with a feeding system of the Coaxal grinding machine, processing optical ferrule. This report also examines the applicability of using the feeding system for the Coaxial grinding machine, by mean of conducting performance estimation. The results are as follow; Repeatability of regulating wheel is $17{\mu}m$, R/W rotation accuracy is between $30\;\~\;40{\mu}m$. This means 'Rotation accuracy' is lower than the concentricity level. Backlash generation level at the feeding system of the grinding wheel is under $1{\mu}m$, thereby positioning accuracy is controlled within $2{\mu}m$ In terms of repeatability, you can find occasional error at the returning process from the starting point. This error is resulted from the measurement tolerance of the starting point sensor. We will get the repeatability level under control by $1{\mu}m$, through improving the soft-ware used and up-grading the sensor at the starting point.

• Journal of the Korean Society of Manufacturing Technology Engineers
• /
• v.23 no.5
• /
• pp.498-504
• /
• 2014

Displacements and strains are very important for material evaluation as critical factors to a machine's life cycle and safety. Typically, the strain gauge has been employed to measure displacement and strain. However, this contact-type measurement method has disadvantages that are not quantified under the test conditions of a specific object shape, surface roughness, and temperature. In this paper, the measurement of deflection and flexural strain due to the three-point bending test is presented, employing Digital Image Correlation (DIC) methods. In order to ensure measurement reliability, DIC and universal test machine methods were compared by measuring the deflections and flexural strains developed by such bending tests.

• 제어로봇시스템학회:학술대회논문집
• /
• 1997.10a
• /
• pp.1836-1839
• /
• 1997

This paper presents machine vision technique with a camera modeling that accounts for major sources of camera distortion, namely, radial, decentering, and thin prism distortion. Radial distortion causes an inward or outward displacement of a given image point from its ideal location. Actual optical systems are subject to various degrees of decentering, that is, the optical centers of lens elements are not strictly collinear. It is our purpose to develop the vision system for the pattern recognition and the automatic test of parts and to apply the line of manufacturing.

• Communications for Statistical Applications and Methods
• /
• v.6 no.2
• /
• pp.337-344
• /
• 1999

Support vector machine(SVM) is a new and very promising regression and classification technique developed by Vapnik and his group at AT&T Bell laboratories. This article provides a brief overview of SVM focusing on linear regression. We explain from statistical point of view why SVM might be attractive and how this could be compared with other linear regression techniques. Furthermore. we explain model selection based on VC-theory.

• Proceedings of the KIEE Conference
• /
• 1989.07a
• /
• pp.153-157
• /
• 1989

In this paper, a new method of Eye Movement Pattern Encoding (EMPE) which is based on electrooculography(EOG) was suggested for the purpose of effective communication between man and machine, instead of Point-Of-Regard-Selection (PORS) method. Also, ocular interface is designed and the typing aid, eye-pattern writer, was constructed for the test of theoretical validity and its practical aspect. Effect of eye fatigue on the performance of ocular interface was quantified through fatigue test.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 1997.04a
• /
• pp.179-185
• /
• 1997

This paper presents machine vision technique with a camera modeling that accounts for major sources of camera distortion, namely,radial, decentering, and thin prism distortion. Radial distortion causes an inward or outward displacement of a given image point from its ideal location. Actual optical systems are subject to varios degrees of decentering,that is,the optical centers of lens elements are not strictly collinear. Thin prism distortion arises form imperfection in lens design and manufacturing as well as camera assembly. It is our purpose to develop the vision system for the pattern recognition and the automatic test of and to apply the line of part manufacturing.

• Proceedings of the Korean Information Science Society Conference
• /
• 2000.10a
• /
• pp.329-331
• /
• 2000

G-Machine은 수행하는데 있어서 그래프를 표현하기 위해 많은 그래프 공간을 필요로 한다. 이를 줄이기 위한 노력으로 최근 태그 옮김을 이용한 ZGM이 설계되었다. 하지만, ZGM은 태그와 자료의 분리로 인하여 많은 상대 주소를 갖게 되어 실행 시간 부담이나 공간 활용 부담이 된다. 본 논문에서 우회 노드 장소에 자료를 중복 사용하는 방법을 이용하여 G-Machine에서 필요로 하는 그래프 공간을 절약한 poGM(Point Over lapped GM)을 제안한다. poGM은 ZGM과 같이 상대 주소를 사용하지만, 일반적인 노드 나타내는데 ZGM과 달리 자료의 분리가 일어나지 않고, 상대 주소를 줄일 수 있으며, 실험을 통하여 공간 효율과 시간 효율이 높은 것을 보인다.

• Proceedings of the Korean Society of Precision Engineering Conference
• /
• 1994.10a
• /
• pp.9-14
• /
• 1994

The modern CNC machine require increasingly an exact monitoring and control of cutting process. They are to make final taret which construct full automation factories as unmanned system. In this study, we decided that we develop new techique to monitor and detect tool breakage on the machining operation using face milling machine with multi-point throwaway tips. The technology in which the tool is illuminated by an beam of Laser is used by image of tool fracture through CCD camera.