Analysis of motor fan radiated sound and vibration waveform by automatic pattern recognition technique using ‘ ‘ Mahalanobis distance’ ’

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TOMA EIJI

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Journal Paper

Paper Information

Journal: JOURNAL OF INDUSTRIAL ENGINEERING INTERNATIONAL Year:2019 | Volume:15 | Issue:1 Page(s): 81-92

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Title

Analysis of motor fan radiated sound and vibration waveform by automatic pattern recognition technique using ‘ ‘ Mahalanobis distance’ ’

Author(s)

TOMA EIJI | Issue Writer Certificate

Keywords

MT system

Mahalanobis distance (MD)

Feature value

Effectiveness analysis

Abstract

In recent years, as the weight of IT equipment has been reduced, the demand for motor fans for cooling the interior of electronic equipment is on the rise. Sensory test technique by inspectors is the mainstream for quality inspection of motor fans in the field. This sensory test requires a lot of experience to accurately diagnose differences in subtle sounds (sound pressures) of the fans, and the judgment varies depending on the condition of the inspector and the environment. In order to solve these quality problems, development of an analysis method capable of quantitatively and automatically diagnosing the sound/vibration level of a fan is required. In this study, it was clarified that the analysis method applying the MT system based on the waveform information of noise and vibration is more effective than the conventional frequency analysis method for the discrimination diagnosis technology of normal and abnormal items. Furthermore, it was found that due to the automation of the vibration waveform analysis system, there was a factor influencing the discrimination accuracy in relation between the fan installation posture and the vibration waveform.

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APA: Copy

TOMA, EIJI. (2019). Analysis of motor fan radiated sound and vibration waveform by automatic pattern recognition technique using ‘ ‘ Mahalanobis distance’ ’. JOURNAL OF INDUSTRIAL ENGINEERING INTERNATIONAL, 15(1), 81-92. SID. https://sid.ir/paper/310195/en

Vancouver: Copy

TOMA EIJI. Analysis of motor fan radiated sound and vibration waveform by automatic pattern recognition technique using ‘ ‘ Mahalanobis distance’ ’. JOURNAL OF INDUSTRIAL ENGINEERING INTERNATIONAL[Internet]. 2019;15(1):81-92. Available from: https://sid.ir/paper/310195/en

IEEE: Copy

EIJI TOMA, “Analysis of motor fan radiated sound and vibration waveform by automatic pattern recognition technique using ‘ ‘ Mahalanobis distance’ ’,” JOURNAL OF INDUSTRIAL ENGINEERING INTERNATIONAL, vol. 15, no. 1, pp. 81–92, 2019, [Online]. Available: https://sid.ir/paper/310195/en

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