摘要
针对驱动电机某一运转工况的噪声声压级与电机噪声频率的测试问题,提出了一种运用声学照相机See SV与传声器相结合,并同时检测电机振动信号的测试方法。通过选取See SV的不同频段对噪声源进行定位识别,分离出驱动电机的噪声频段,运用传声器测定电机的噪声强度,并用振动信号对声压信号进行验证。测试结果表明,用See SV和传声器相结合的方法,可在复杂噪声中识别出驱动电机的噪声频率为2 666.25 Hz,声压级为60.7 d B,对工程噪声的评价具有实践意义。
A test method combining the acoustic camera SeeSV with microphones to detect the motor vibration signal simultaneously is proposed for measuring a drive motor sound pressure level and noise frequency. Different SeeSV frequency bands are chosen to locate and identify the noise source, and isolate motor noise spectrum. Microphones are used to measure the motor noise intensity, which is verified by vibrating signal. The result shows that noise frequency and sound pressure level from drive - motors can be identified in complex noises by using the combination of SeeSV with sound transmission meter in practical engineer noise evaluation. The noise frequency and sound pressure level is 2666.25 Hz and 60. 7 dB, respectively.
出处
《电子科技》
2016年第8期61-63,共3页
Electronic Science and Technology
关键词
驱动电机
噪声测试
噪声分离
声源定位
driving motor
noise test
noise separation
acoustic source localization
