NOISE ANALYSIS METHOD, NOISE ANALYSIS PROGRAM, AND NOISE ANALYSIS DEVICE

Through the present invention, order resolution and SN ratio are both achieved. This noise analysis method comprises a spectrum calculation step for applying discrete Fourier transformation to the measured value of at least one of vibration and sound generated by a rotating body and calculating a fr...

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Main Author TOYOSHIMA, Naoko
Format Patent
LanguageEnglish
French
Japanese
Published 16.12.2021
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Abstract Through the present invention, order resolution and SN ratio are both achieved. This noise analysis method comprises a spectrum calculation step for applying discrete Fourier transformation to the measured value of at least one of vibration and sound generated by a rotating body and calculating a frequency spectrum, a spectrum conversion step for converting the frequency spectrum to an order spectrum, and a filter processing step for applying SN ratio enhancement filter processing to the order spectrum for each range common to an order. Grâce à la présente invention, une résolution d'ordre et un rapport signal sur bruit (SN) sont tous les deux obtenus. Le procédé d'analyse de bruit comprend une étape de calcul de spectre consistant à appliquer une transformée de Fourier discrète sur la valeur mesurée d'au moins l'un parmi une vibration et un son générés par un corps rotatif et calculer un spectre de fréquence, une étape de conversion de spectre consistant à convertir le spectre de fréquence en un spectre d'ordre, et une étape de traitement de filtre consistant à appliquer un traitement de filtre d'amélioration de rapport SN sur le spectre d'ordre pour chaque plage commune à un ordre. 次数分解能とSN比とを両立させる。騒音解析方法は、回転体が発する振動および音の少なくとも一方の計測値に離散フーリエ変換を施して周波数スペクトルを算出するスペクトル算出ステップと、上記周波数スペクトルを次数スペクトルに変換するスペクトル変換ステップと、上記次数スペクトルに対して次数共通の範囲毎に、SN比向上のフィルタ処理を施すフィルタ処理ステップと、を経る。
AbstractList Through the present invention, order resolution and SN ratio are both achieved. This noise analysis method comprises a spectrum calculation step for applying discrete Fourier transformation to the measured value of at least one of vibration and sound generated by a rotating body and calculating a frequency spectrum, a spectrum conversion step for converting the frequency spectrum to an order spectrum, and a filter processing step for applying SN ratio enhancement filter processing to the order spectrum for each range common to an order. Grâce à la présente invention, une résolution d'ordre et un rapport signal sur bruit (SN) sont tous les deux obtenus. Le procédé d'analyse de bruit comprend une étape de calcul de spectre consistant à appliquer une transformée de Fourier discrète sur la valeur mesurée d'au moins l'un parmi une vibration et un son générés par un corps rotatif et calculer un spectre de fréquence, une étape de conversion de spectre consistant à convertir le spectre de fréquence en un spectre d'ordre, et une étape de traitement de filtre consistant à appliquer un traitement de filtre d'amélioration de rapport SN sur le spectre d'ordre pour chaque plage commune à un ordre. 次数分解能とSN比とを両立させる。騒音解析方法は、回転体が発する振動および音の少なくとも一方の計測値に離散フーリエ変換を施して周波数スペクトルを算出するスペクトル算出ステップと、上記周波数スペクトルを次数スペクトルに変換するスペクトル変換ステップと、上記次数スペクトルに対して次数共通の範囲毎に、SN比向上のフィルタ処理を施すフィルタ処理ステップと、を経る。
Author TOYOSHIMA, Naoko
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DocumentTitleAlternate PROCÉDÉ D'ANALYSE DE BRUIT, PROGRAMME D'ANALYSE DE BRUIT, ET DISPOSITIF D'ANALYSE DE BRUIT
騒音解析方法、騒音解析プログラム、および騒音解析装置
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RelatedCompanies NIDEC CORPORATION
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Snippet Through the present invention, order resolution and SN ratio are both achieved. This noise analysis method comprises a spectrum calculation step for applying...
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SubjectTerms MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
PHYSICS
TESTING
TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES
TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR
Title NOISE ANALYSIS METHOD, NOISE ANALYSIS PROGRAM, AND NOISE ANALYSIS DEVICE
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