Abstract
In order to satisfy the noise source identification of driving motor system on electric vehicle, based on the 'sum and delay' algorithm of the beamforming theory in the time domain signal processing, the experiments about noise are studied through the crossed planar microphone array, which consists of 27 microphones. During the experiment, the motor runs at the speed of 1000 r/min and the torque is 380 N?m. The results indicate that the main noise sources are fan, gear-box and some structures of the traction motor. To validate the experiment results, the experiments about noise are studied through the measurement at discrete points based on the theory of sound intensity. The results indicate that the method based on sound array can identify noise sources more quickly than that based on sound intensity and they are all effective. The method of sound array can also be feasibly used in the other mechanism or electric equipment to identify noise source.
Original language | English |
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Pages (from-to) | 109-112 |
Number of pages | 4 |
Journal | Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering |
Volume | 28 |
Issue number | 30 |
Publication status | Published - 25 Oct 2008 |
Keywords
- Electric vehicle
- Experimental study
- Microphone array
- Noise source identification
- Traction motor