AEエンベロープ波形を用いた超低速転がり軸受診断法

カテゴリ: 論文誌(論文単位)

グループ名: 【D】産業応用部門

発行日: 2012/04/01

タイトル(英語): Diagnosis of Extremely Low-Speed Rolling-Element Bearing Using AE Envelope Waveform

著者名: 迫　孝司（早稲田大学），吉江　修（早稲田大学）

著者名(英語): Takashi Sako (Waseda University), Osamu Yoshie (Waseda University)

キーワード: 設備診断，信号処理，低速回転機械，転がり軸受，アコースティック・エミッション，機械状態監視　　machine diagnosis，signal processing，low speed rotating equipment，rolling element bearing，acoustic emission，machine condition monitoring

要約(英語): Most low-speed rotating equipments are large and important. Therefore, a plant will suffer substantial losses if the operation of such equipments stops because of any damage to their rolling-element bearings. This paper discusses a diagnostic method for rolling-element bearings in rotating equipments with extremely low speeds of 100rpm or less and further, it proposes a diagnostic method based on acoustic emission (AE) envelope waveform of 100kHz to 1MHz frequency. Abnormality diagnosis was performed even for a rotation number of 1rpm by improving the signal-to-noise (S/N) ratio by carrying out further amplification after envelope waveform processing and AE waveform amplification. Furthermore, a method for removing electric noises and an abnormality-diagnosis method based on an event-counting method in the case of extremely low-speed rotation are proposed. Further, we are manufacturing a diagnostic instrument based on this diagnostic method, and we are performing abnormality diagnosis and monitoring of on-site conditions.

本誌: 電気学会論文誌D（産業応用部門誌） Vol.132 No.4 （2012）

本誌掲載ページ: 501-509 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejias/132/4/132_4_501/_article/-char/ja/