Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Reliability Qualification Test of a Unmanned Control Robot System for an Excavator

굴삭기용 무인조종로봇 신뢰성 보증 시험에 대한 연구

  • Back, Seung Jun (Dept. of Mechanical & Automotive Engineering, Education and Research Centre for Reliability, Andong Nat'l Univ.) ;
  • Son, Young Kap (Dept. of Mechanical & Automotive Engineering, Education and Research Centre for Reliability, Andong Nat'l Univ.) ;
  • Kim, Jun Hee (Aerospace R&D Center / Hanwha TechMuthor Affiliation) ;
  • Lee, Jong Cheol (Aerospace R&D Center / Hanwha TechMuthor Affiliation)
  • 백승준 (안동대학교 기계자동차공학과) ;
  • 손영갑 (안동대학교 기계자동차공학과) ;
  • 김준희 ((주)한화테크엠 항공사업부) ;
  • 이종철 ((주)한화테크엠 항공사업부)
  • Received : 2014.02.28
  • Accepted : 2015.01.29
  • Published : 2015.04.01
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Abstract

This paper proposes the development of a method for assessing the system reliability of an unmanned control robot system for an excavator. It then shows the results of the reliability qualification test based on the proposed method. The robot system functions to ensure the safety of the workers who control excavators in dangerous working environments, and the system reliability was calculated by integrating the reliabilities of the system components. Thus, test equipment for the three key units of the robot system were constructed and used in accelerated life testing. From the life testing results, guaranteed mean time between failures for the chosen confidence level was estimated, and the reliability qualification testing method of the robot system using small sample sizes was proposed.

본 논문은 개발 중에 있는 굴삭기 무인조종 로봇을 대상으로 시스템 신뢰도 평가 방법을 제안하고, 제안한 방법을 이용하여 수행한 신뢰도 보증시험에 대한 결과를 나타낸다. 로봇 시스템은 위험한 작업환경에서 작업자의 안전을 위하여 개발되었으며 전체 시스템의 신뢰도는 각 구성품의 신뢰도로부터 계산될 수 있다. 따라서 세 가지 주요 구성품 각각에 대한 전용 시험 장비를 제작하여 가속수명시험에 사용하였다. 가속수명시험 결과를 이용하여 신뢰수준에 따른 보증할 수 있는 평균수명을 추정하고, 적은 시료 수를 사용하는 시스템 신뢰도 보증 시험법을 제안하였다.

Keywords

References

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