• Title/Summary/Keyword: Kim Jong Un

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신뢰성 및 정비성 요구조건 만족을 위한 직렬시스템의 중복 구조 설계

  • Kim, Jong-Un;Park, Jun-Seo;Yu, Won-Hui
    • Proceedings of the Korean Society for Quality Management Conference
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    • 2006.11a
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    • pp.105-109
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    • 2006

  • MTTR and MTBSF are two representative quantitative maintainability and reliability requirements for railway systems. we deal with the redundancy allocation problem to satisfy the two requirements. The redundancy increases MTBSF and changes MTTR. Parallel redundancy and the exponential lifetime distribution of components are considered for the series systems. Mathematical model and example are presented for the redundancy optimization problem of minimizing the cost subjecting to MTTR and MTBSF requirements.

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Research for experimental methods of mechanical parameters estimation of the mobile robots (로봇의 기구학적 계수 추정을 위한 실험적 방법에 대한 연구)

  • Choi, Jong-Mi;Park, Joong-Un;Lee, Ji-Hong;Kim, Ji-Yong
    • Proceedings of the IEEK Conference
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    • 2009.05a
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    • pp.106-108
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    • 2009

  • In this paper, we handle automatic estimation of mechanical parameters for mobile robots. Most estimation methods are based on the sequence and move-measurement-estimation. Estimated accuracy is largely dependent on the paths. Mathematical conditions minimizing estimation errors are derived, and then a method finding optimal paths for mechanical parameters estimation is proposed.

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