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.
关键词
煤矿通风机/噪声主动控制/声场重构
Key words
coal mine ventilation fan/active noise control/sound field reconstruction
维普
万方数据