Active noise control with online feedback-path modeling using adaptive notch filter
Active noise control with online feedback-path modeling using adaptive notch filter
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DOI：
10.1109/icamechs.2018.8507069
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发表时间：
2018-08
期刊：
影响因子：
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通讯作者：
T. Bai;Yegui Xiao;Yaping Ma;Jian-ming Ding;Jianhui Lin
中科院分区：
文献类型：
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作者：
T. Bai;Yegui Xiao;Yaping Ma;Jian-ming Ding;Jianhui Lin
反馈路径(FBP)补偿是有源噪声控制(ANC)领域几十年来的研究课题，文献中提出了许多离线和在线的FBP建模技术。本文提出了一种带有在线FBP建模(FBPM)和中和(FBPMN)子系统的新型ANC系统。新系统由三个自适应子系统组成，即1)每个频率目标只有两个权值的ANC控制器，2)二阶自适应IIR陷波滤波器，3)FBPMN滤波器。对于风扇、电机、大型绞线机等旋转机械产生的窄带噪声信号，它具有非常好的性能。在ANC系统中注入辅助的高斯白噪声来实现FBPMN，该网络根据剩余噪声的函数进行缩放，以降低其对剩余噪声功率的贡献。对合成/真实二次路径的大量仿真表明，所提出的ANC方案在保证良好的降噪性能的同时，具有较高的计算效率。
The feedback path (FBP) compensation has been a research topic in the field of active noise control (ANC) for decades and a number of offline and online FBP modeling techniques have been proposed in the literature. In this paper, a novel ANC system equipped with an online FBP modeling (FBPM) and neutralization (FBPMN) subsystem is proposed. The new system consists of three adaptive subsystems, namely 1) ANC controller with only two weights for each frequency target, 2) second-order adaptive IIR notch filter, and 3) an FBPMN filter. It yields very promising performance for narrowband noise signals generated by rotating machines such as fans, motors, large-scale strandcutters, etc. An auxiliary white Gaussian noise is injected into the ANC system to implement the FBPMN, which is scaled by a function of the residual noise to reduce its contribution to the residual noise power. Extensive simulations with synthetic/real secondary paths reveal that the proposed ANC scheme ensures excellent noise reduction performance as well as practically attractive computational efficiency.