传感技术学报2024，Vol.37Issue(9)：1563-1570,8.DOI:10.3969/j.issn.1004-1699.2024.09.013
针对频率失调问题的挖掘机ANC系统优化设计
Optimized Design of Excavator ANC Systems for Frequency Mismatch
摘要
Abstract
In narrowband active noise control(NANC),non-acoustic sensors are often used to obtain reference signals,but non-acoustic sensors can cause errors due to aging and fatigue accumulation,resulting in frequency mismatch(FM)in the NANC system,leading to reduced noise reduction performance.To address this problem,an adaptive compensation(AC)based control scheme is proposed,which uses filtering to enhance the correlation between the fittering enhanced signal and the original signal,and a frequency tracking quality evaluation factor is designed,so that the scheme can achieve more accurate tracking of frequency to achieve better FM compensation results.Through simulation comparison,it is found that the AC scheme can cope with larger FM compared to the conventional solution,giving the NANC system better stability and initially verifying the superiority of the algorithm.Further bench tests and real machine tests are carried out,and the test results show that when the FM reached 10%,the NANC system optimised by the AC solution still achievs 15.2 dB,24.1 dB and 21.2 dB noise reduction for the 2nd,4th and 6th order of the excavator,further verifying the performance of the solution.It also shows that the scheme can effectively achieve the control of FM and has high practical value.关键词
窄带主动噪声控制/频率失调/延时陷波算法/最速下降法/非声学传感器Key words
narrowband active noise control/frequency mismatch/delay notch algorithm/steepest descent method/non-acoustic sensor分类
信息技术与安全科学引用本文复制引用
袁守利,陈际,刘志恩,吴方博..针对频率失调问题的挖掘机ANC系统优化设计[J].传感技术学报,2024,37(9):1563-1570,8.基金项目
国家自然科学基金项目(52175111) （52175111）
