• Title/Summary/Keyword: tolerance analysis

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Analysis on Image Compression using Weighted Finite Automata (WFA를 이용한 이미지 압축 알고리즘에 대한 분석)

  • 엄준형;김태환
    • Proceedings of the Korean Information Science Society Conference
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    • 2002.04a
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    • pp.727-729
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    • 2002
  • 본 논문에서 우리는 grey scale 영상을 weighted finite automata(WFA)로써 기술하는 두개의 알고리즘(2, 4)을 분석하였다. 또한 원영상과 WFA를 이용하여 압축된 영상간의 error를 분석하고 그 결과를 제시하였다. 구체적으로, 영상복원 tolerance $\delta$를 이용하여 찾아진 atomatone에 의해 복원된 영상과 원영상의 ι$^2$-norm의 차이가 $\delta$보다 작거나 같음을 증명하였다.

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A Study on the Construction of Database System for Automotive Shock Absorber (자동자용 충격흡수기의 데이터베이스 시스템 구축에 관한 연구)

  • 정영대;박재우;이석희;김영호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.942-946
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    • 1995
  • Using database obtained by means of experiments, or using the synamic behaviour analysis program of automotive shock absorber, database system is constructed within the limits of adequate reliability. Thus constructed data base can be used to find out corresponding specification of shock absorber design parameters to the required damping ability and tolerance.

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A Study on the Construction of Database System for Automotive Shock Absorber (자동차용 충격흡수기의 데이터베이스 시스템 구축에 관한 연구)

  • 정영대;박재우;김명호
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 1995.10a
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    • pp.227-231
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    • 1995
  • This paper describes a basic programming and interfacing modele which can link DataBase form experiments and dynamic analysis program of chock absorber within the limit of adequate reliability. The system developed can provid a user specific Database of shock absorber within the required damping performance and endurable tolerance, thus show a good application possibilities in commercial vehicle design.

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Influence of Manufacturing Errors on the Dynamic Characteristics of Planetary Gear Systems

  • Cheon, Gill-Jeong;Park, Robert G. er
    • Journal of Mechanical Science and Technology
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    • v.18 no.4
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    • pp.606-621
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    • 2004
  • A dynamic analysis using a hybrid finite element method was performed to characterize the effects of a number of manufacturing errors on bearing forces and critical tooth stress in the elements of a planetary gear system. Some tolerance control guidelines for managing bearing forces and critical stress are deduced from the results. The carrier indexing error for the planet assembly and planet runout error are the most critical factors in reducing the planet bearing force and maximizing load sharing, as well as in reducing the critical stress.

Development of Drilling Jig by Practical and Adaptive Tooling System(Part 2)

  • Sim, Sung-Bo;Lee, Sung-Taeg
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2000.04a
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    • pp.177-180
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    • 2000
  • This is the continue paper as part 2 in this study. In order to prevent the production defects, the optimum design of product, jig and fixture and their making are very significant devision. especially the result of tryout and its analysis become the characteristics of this paper that nothing might be ever seen before such as this type of research method on all processes.

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Sensitivity Analysis and Tolerance Design of the Stabilized Mirror (안정거울 장치의 민감도 해석 및 공차설계)

  • 정호섭;손석만;이종원
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 1995.04a
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    • pp.287-291
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    • 1995
  • 다구찌 방법을 이용하여 안정거울 시스템의 민감도 해석, 강건설계 및 공차설계를 행하였다. 민감도 해석을 통해 안정거울 시스템의 안정화 성능에 크게 영향을 미치는 7개의 중요한 설계변수를 도출하였다. $m_{M}$이 안정화 성능에 가장 크게 영향을 주므로 공차범위를 줄여야 한다. $m_{M}$, $m_{B}$, $K_{MB}$ , $p_{3}$, $b_{3}$는 공차범위가 크게 안정화 성능에 영향을 미치지 못함을 알 수 있다. 기타의 변수들은 각각 하한공차 및 상한공차로 주어진다.

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Development of Milling Fixture by Practical and Adaptive Tooling System(Part 2) -Fixture making System, Fixture components, Fixture making and Tryout-

  • Sim, Sung-Bo;Lee, Sung-Taeg;Jang, Chan-Ho
    • Proceedings of the Korea Committee for Ocean Resources and Engineering Conference
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    • 2000.10a
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    • pp.38-41
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    • 2000
  • This is the continued paper as part 2 in this study. In order to prevent the production defects, the optimum design of product, fixtures and their making are very significant division. Especially the result of modelling and its analysis become the characteristics of this paper that nothing might be over seen before such as this type of research method on all processes.

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