Research on Active Control Technology of Noise at the Air Inlet of Coal Mine Ventilation Fan
Coal mine ventilation fan is an important equipment in coal mine production,and the noise it generates seriously affects the work efficiency of workers. Based on this,an active control method is proposed for the noise source at the inlet of coal mine ventilation fans. This method achieves noise reduction by installing a microphone array and a secondary sound source near the air inlet to measure noise signals in real time,and radiating secondary sound waves to cancel out the original noise field. The experimental results show that this method exhibits stable noise reduction effects on different working conditions,and has good practicality and robustness.
coal mine ventilation fanactive noise controlsound field reconstruction
万方数据
维普
