Development of diagnosis index for tick/click and tone noise of blower motor using vibration signals

Songjune Lee; Cheolung Cheong; In-Hyuk Lee

doi:10.7776/ASK.2019.38.3.363

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2019 Vol.38, Issue 3 Preview Page

Research Article

Development of diagnosis index for tick/click and tone noise of blower motor using vibration signals 진동 신호를 이용한 블로워 모터 틱/클릭과 톤 소음의 진단 지수 개발

31 May 2019. pp. 363-369

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Abstract

Various studies have been conducted for the diagnosis of noise condition of complex rotary machines. In this study, diagnosis index using vibration signal is developed for the efficient and objective assessment of noise condition of a blower motor. The noise most commonly caused by the abnormal blower motor are Tick/Click noise and Tone noise. According to cause and noise characteristics, time-frequency analysis is used to diagnose Tick/Click noise, and smoothing in frequency domain is used to diagnose tone noise condition. The noise condition of the blower motors were diagnosed using the developed index and these results are compared with the diagnostic results by the experts. As a result, the agreement rate was about 95 %.

Keywords

Blower motor

Condition diagnosis

Time-frequency analysis

Wavelet transform

복잡한 회전 기계의 소음 상태 진단을 위한 다양한 연구가 수행되고 있다. 본 연구에서는 진동신호를 이용하여 블로워 모터의 효율적이고 객관적인 소음 상태진단을 위한 지수를 개발하였다. 블로워 모터의 이상 시 가장 흔히 나타나는 소음으로 틱/클릭 소음과 톤 소음이 있다. 발생 원인과 소음 특성에 따라 틱/클릭 소음의 상태 진단에는 시간-주파수 분석법을 그리고 톤 소음 상태 진단에는 주파수 영역에서의 평활화 기법을 이용하였다. 개발한 지수를 이용하여 블로워 모터의 소음 상태 진단을 수행하고 이를 전문가에 의한 진단 결과와 비교하였다. 그 결과 약 95 %의 일치율을 보였다.

키워드

블로워 모터

소음상태진단

시간-주파수 분석

웨이브렛 변환

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Information

Publisher :The Acoustical Society of Korea
Publisher(Ko) :한국음향학회
Journal Title :The Journal of the Acoustical Society of Korea
Journal Title(Ko) :한국음향학회지
Volume : 38
No :3
Pages :363-369
Received Date : 2019-03-27
Accepted Date : 2019-05-13
DOI :https://doi.org/10.7776/ASK.2019.38.3.363

The Journal of the Acoustical Society of Korea ISSN:1225-4428(Print) 2287-3775(Online) 한국음향학회지

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