基于IIR陷波器应对频率失调的窄带ANC系统新结构

doi:10.3969/j.issn.0372-2112.2015.01.020

电子学报 ›› 2015, Vol. 43 ›› Issue (1): 129-134.DOI: 10.3969/j.issn.0372-2112.2015.01.020

基于IIR陷波器应对频率失调的窄带ANC系统新结构

温良^1,2, 黄博妍¹, 肖业贵³, 魏国¹, 孙金玮¹

1. 哈尔滨工业大学自动化测试与控制系, 黑龙江哈尔滨 150001;
2. 96361部队, 青海西宁 810000;
3. 广岛县立大学, 日本广岛 734-8558

收稿日期:2014-05-08 修回日期:2014-08-04 出版日期:2015-01-25
- 通讯作者:
- 魏国
- 作者简介:
- 温良男.1984年9月出生, 2007年至今任职于中国人民解放军96361部队, 哈尔滨工业大学电气工程及自动化学院在读博士研究生.从事自适应信号处理、主动噪声控制方面的有关研究.E-mail:lwen@hit.edu.cn;黄博妍 女.1984年出生, 哈尔滨工业大学电气工程及自动化学院讲师.从事自适应信号处理、语音增强及主动噪声控制方面的有关研究.E-mail:byhuang@hit.edu.cn
- 基金资助:
- 国家自然科学基金 (No.61171183); 2012航天支撑基金 (No.01320214); 中央高校基本科研业费专项资金 (No.HIT.IBRSEM.201306)

New Structure for Dealing with Frequency Mismatch of Narrowband ANC System Based on IIR Notch Filter

WEN Liang^1,2, HUANG Bo-yan¹, XIAO Ye-gui³, WEI Guo¹, SUN Jin-wei¹

1. Department of Automatic Test and Control, Harbin Institute of Technology, Harbin, Heilongjiang 150001, China;
2. 96361 PLA Troops, Xining, Qinghai 810000, China;
3. Prefectural University of Hiroshima, Hiroshima 734-8558, Japan

Received:2014-05-08 Revised:2014-08-04 Online:2015-01-25 Published:2015-01-25

摘要/Abstract

摘要：

窄带主动噪声控制(ANC)系统中往往存在频率失调(FM)问题,传统的频率失调补偿(FMC)系统能应对一定程度的FM,但当噪声信号非平稳或失调量较大时,系统将无法工作.针对此问题,本文提出一种带有频率估计的窄带ANC系统新结构,其采用声学和非声学两路传感器获取参考信号,引入可变极半径及平滑下降(PG)算法构建IIR陷波器,完成参考信号的频率估计,通过一阶FIR滤波器实现幅值和相位的调节.仿真表明,在保证合理的稳态误差情况下,与传统的FMC系统相比,新系统能够应对较大的FM,且具有良好的收敛和追踪性能.

关键词: 窄带主动噪声控制, 频率失调, 非平稳噪声, IIR陷波器, 可变极半径

Abstract:

Since the narrowband active noise control (ANC) system always gives rise to frequency mismatch (FM),the traditional frequency mismatch compensation (FMC) technique can cope with small FM,but is unable to deal with non-stationary noise signals or large FM.In order to solve the above problem,a new ANC structure with a frequency estimator is first introduced,whose inputs are measured by both the acoustic and non-acoustic sensors.The IIR notch filter based on plain gradient (PG) algorithm is employed as the frequency estimator,and the adjustment of amplitude and phase of secondary source is achieved by a first-order FIR filter updated by filtered-x LMS (FXLMS) or RLS (FXRLS) algorithm.Simulations indicated that the new system,in the condition of ensuring reasonable steady-state error,compared with the traditional FMC system,could effectively handle larger FM and revealed fine convergence and tracking performance.

Key words: narrowband active noise control, frequency mismatch, non-stationary noise, IIR notch filter, variable pole radius

中图分类号:

TB535

温良, 黄博妍, 肖业贵, 魏国, 孙金玮. 基于IIR陷波器应对频率失调的窄带ANC系统新结构[J]. 电子学报, 2015, 43(1): 129-134.

WEN Liang, HUANG Bo-yan, XIAO Ye-gui, WEI Guo, SUN Jin-wei. New Structure for Dealing with Frequency Mismatch of Narrowband ANC System Based on IIR Notch Filter[J]. Acta Electronica Sinica, 2015, 43(1): 129-134.

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基于IIR陷波器应对频率失调的窄带ANC系统新结构

New Structure for Dealing with Frequency Mismatch of Narrowband ANC System Based on IIR Notch Filter

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