Abstract
The detection of motor noise can be used to evaluate the condition of motor. Furthermore the detection of motor noise can be used to analyze the source of motor noise and is helpful to reduce the motor noise. Through analyzing the mechanism of motor noise, a laptop computer and LabVIEW software are used to design the experimental system. The hardware of noise detection system consists of an external microphone and sound card coming with the computer. LabVIEW is used to detect the noise signal and record the noise and realize the spectrum analysis. Through detecting and analyzing the noise of the permanent magnet DC motor and three-phase asynchronous motor, It is proved that the motor noise experimental system consisting of computer and LabVIEW can fully meet the requirements of electrical machine test and research.
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