面向涡桨飞机座舱的多通道主动噪声控制算法改进  

Improvement of multi-channel active noise control algorithm for turboprop aircraft cabin

作　　者：沈昊 薛青 陈亭宇 李嘉璐 沈星[1] SHEN Hao;XUE Qing;CHEN Tingyu;LI Jialu;SHEN Xing(College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;Key Laboratory of Aeronautical Science and Technology for Aeroacoustics and Vibration,Aircraft Strength Research Institute of China,Xi’an 710065,China)

机构地区：[1]南京航空航天大学航空学院,南京210016 [2]中国飞机强度研究所航空声学与振动航空科技重点实验室,西安710065

出　　处：《航空工程进展》2024年第5期67-78,共12页Advances in Aeronautical Science and Engineering

基　　金：强度与结构完整性全国重点实验室开放基金(ASSIKFJJ202303001)。

摘　　要：目前主动噪声控制(ANC)领域应用最广的控制算法是经典FxLMS算法及其改进算法,该类算法在应用于涡桨飞机座舱这类大空间、大范围的噪声控制时,算法的计算量会随着ANC系统通道数的增加而迅速膨胀,算法的实时性难以满足。连续局部迭代FxLMS(SPU-FxLMS)算法有效解决了这一问题,但其收敛性能弱于FxLMS算法,本文针对SPU-FxLMS算法收敛慢的问题进行改进,使得该算法在运行初期能够以较快的速度收敛,在收敛至平稳状态后以低计算量持续运行,并对改进算法进行理论推导和仿真分析。结果表明:该算法在进一步降低计算量的同时,还具有良好的降噪性能和鲁棒性,工程应用前景良好。At present,the most widely used control algorithms in the field of active noise control(ANC)are the classical FxLMS algorithm and its improved algorithms,which are applied to noise control in large spaces and ar-eas such as the turboprop aircraft cabin,the amount of algorithmic calculations will be rapidly expanded with the in-crease in the number of channels of the ANC system,and the real-time requirements of algorithms are difficult to meet.Sequential Partial Update FxLMS(SPU-FxLMS)algorithm effectively solves this problem,but its conver-gence performance is weaker than that of the FxLMS algorithm.In this paper,the improvements to the SPU-Fx-LMS algorithm for the problem of slow convergence are made,so that the algorithm can be converged with a faster speed in the early stage of the operation,and then converge with a lower speed after converging to a smooth state.After converging to a steady state,the algorithm continues to run with a low computational capacity.The theoreti-cal derivation and simulation analysis of the improved algorithm are carried out.The results show that the algorithm has good noise reduction performance and robustness while further reducing the amount of computation,and has a good prospect for engineering applications.

关 键 词：主动噪声控制 多通道系统 滤波-x最小均方算法 自适应滤波 

分 类 号：V223[航空宇航科学与技术—飞行器设计]