摘要
针对高速电梯运行过程中所产生的轿厢噪声,基于主动噪声控制(ANC)技术,设计并开发了一个3入1出的多通道DSP自适应控制系统。利用该系统在模拟电梯环境中,分别针对130 Hz单频正弦噪声,正弦加白噪声和录取的电梯轿厢嗓声进行了控制实验,获得了20 dB,12 dB,8 dB的降噪效果,验证了本文系统在高速电梯轿厢噪声控制中的可用性和有效性。
A multi-channel self-adaptive active noise control system which has three inputs and one output based on digital signal processor is designed by using the active noise control(ANC)technology to relieve the complex noise during the moving process of high-speed elevator.The 130 Hz single-frequency sine noise,the single-frequency sine noise mixed with white noise and the recorded noise from high-speed elevator were experimented respectively in simulated elevator environment,and 20 dB,12 dB,and 8 dB noise reduction effects were obtained,which verifies the feasibility and effectiveness of the system.
作者
戴欲峰
吴亚锋
马英博
DAI Yu-feng;WU Ya-feng;MA Ying-bo(School of Power and Energy,Northwestern Polytechnical University,Xi'an 710129,China)
出处
《测控技术》
2019年第1期132-135,共4页
Measurement & Control Technology
