Area acoustic and electromagnetic emissions monitoring of 3-phase motors

Browne, Aidan F.; Patel, Snehalbhai; Kaloti, Sujay; Lopez, Stephen; Parikh, Prayag K.

doi:10.1109/iemdc.2017.8002368

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2018

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“…Mechanical and electrical equipment fault sound source localization based on TDE can determine Fault location, then posing solutions to fault, aiming to avoid fault to expand, reduce risk of accidents and decrease maintenance costs. Such as generator acoustic fault detection, [1] wind turbines source positioning, [2] power station boiler leakage source positioning. [3] Sound source positioning is in two stages to complete，TDE and geometric positioning.…”

Section: Introductionmentioning

confidence: 99%

Characteristics Analysis and Modeling of Fault Sound and Background Noise of Large Central Air Conditioner

Li¹,

Liu²

2018

JEEE

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Performance of time delay estimation (TDE) algorithm directly affects effect of electromechanical equipment fault sound source positioning based on TDE. Designing more accurate algorithm based proper models of background noise and fault sound can improve accuracy of localization. Firstly, this paper analyzes the characteristics of noise and fault sound of external central air conditioners, then, models environmental noise using Alpha distribution. Finally, Analyzes measured data and preprocess them, realize the more appropriate modeling of environmental noise and eliminate operating noise sources interference. This study has a guiding significance in large-scale mechanical and electrical equipment failure sound source signal modeling, and is helpful to research on TDE algorithm.

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Section: Introductionmentioning

confidence: 99%