Physics-based Diagnostics on Gear Faults Using Transmission Error

전달오차를 이용한 물리기반(Physics-Based) 기어고장진단 이론연구

  • 박정호 (서울대학교 기계항공공학부) ;
  • 하종문 (서울대학교 기계항공공학부) ;
  • 최주호 (한국항공대학교 항공우주 및 기계공학부) ;
  • 박성호 (한국항공대학교 항공우주 및 기계공학부) ;
  • 윤병동 (서울대학교 기계항공공학부)
  • Published : 2014.10.29

Abstract

Transmission error (TE) is defined as "the angular difference between the ideal output shaft position and actual position". As TE is one of the major source of the noise and vibration of gears, it is originally studied with relation of the noise and vibration of the gears. However, recently, with the relation of mesh stiffness, TE has been studied for fault detection of spur gear sets. This paper presents a physics-based theory on fault diagnostics of a planetary gear using transmission error. After constructing the lumped parameter model using DAFUL, multi-body dynamics software, we developed a methodology to diagnose the faults of the planetary gear including phase calculation, signal processing. Using developed methodology, we could conclude that TE could be a good signal for fault diagnostics of a planetary gear.

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