• Title/Summary/Keyword: 측정 정밀도 향상

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A geometric analysis of range measurement error (거리 영상 측정 오차의 기하학적 분석)

  • 윤강식;이병욱;박래홍
    • The Journal of Korean Institute of Communications and Information Sciences
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    • v.22 no.6
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    • pp.1259-1265
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    • 1997

  • We investigate depth measurement error of a range finder based on triangulation method. Geometric analysis resulted in intuitive understanding of the error sensitivity. We show that the depth error is propostional to the distance between the object andthe camera. The measurement value has the highest accuracy when the line connecting the focal point of the camera and the object is perpendicular to the line joining the object and the light source of herange finder. Also we analyze the error using a perturbation method and verify that the results are identical through an experiment.

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광간섭법을 이용한 절대높이 측정 정밀도 향상에 관한 연구

  • 안근식;장경영;문희관
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1993.10a
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    • pp.493-498
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    • 1993

  • This paper proposes a high precision measurement technique to obtain the height of gage block. The proposed technique is consisted of two steps : In the first step, laser position transducer and electric micrometer are adopted to obtain a coarse value of the height of gage block, and then, second, heterodyne laser interferometry is adopted to acquire the precision value. The experiment results show that accuract in the order of a few nanometer is achieved for the gage blacks of as high as a few millimeter.

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이송물체의 질량 측정 속도 및 정밀도 향상 모사 연구

  • 이우갑;정진완;김광표
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1992.10a
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    • pp.161-165
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    • 1992

  • The important properties of industrial scale or weighing machine operated in production lines are quickness and precision. This paper presents an algorithm which meets the importance. The algorithm of Recursive Least Squares Regression is described for the weighing system simulated as a dynamic model of the second order. Using the model and the algorithm, model parameters and then the mass being weighed can be determined from the step input. The performance of the algorithm is illustrated in digital simulation. Discussions have been extended to the development of fast converging algorithm. It turns out that the algorithm shows several desirable features suitable for microcomputer assisted realtime signal processing.

DC 블로워 모터의 이상소음 및 진동 진단 시스템 개발

  • 김정욱;김성렬;김화영;안중환
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2004.05a
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    • pp.280-280
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    • 2004

  • 기계의 소음 및 진동은 환경요인과 함께 기계의 정밀도 향상 및 고장진단과 관련하여 가장 중요한 분야중 하나이다. 특히 기계의 구동원으로 가장 많이 사용되고 모터는 기계설비이면서도 전기적인 현상으로 작동하기 때문에 설비보전의 사각지대로 나타나고 있다. 또한, 진동으로 모터의 전기적인 결함을 분석하기에는 미흡한 부분이 나타나기 때문에 모터 전용분석 기법을 사용하여 전동기의 전기적 결함을 분석하면 보다 정확한 진단이 가능하다. 현재 일부 생산 현장에서는 모터를 진단하기 위해 진동, 온도, 전류 등의 측정기법 들을 이용하여 분석하고 있다.(중략)

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