鲁棒性有源头枕系统的设计方法  

A design method of robust active headrests

作　　者：韩荣 吴鸣[1] 王晓琳[1] 孙红灵[1] 杨军[1,2] HAN Rong;WU Ming;WANG Xiaolin;SUN Hongling;YANG Jun(Key Laboratory of Noise and Vibration Research,Institute of Acoustics,Chinese Academy of Sciences,Beijing 100190,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院噪声与振动重点实验室(声学研究所),北京100190 [2]中国科学院大学,北京100049

出　　处：《应用声学》2018年第5期664-670,共7页Journal of Applied Acoustics

基　　金：国家重点研发计划课题项目(2016YFB1200503);国家自然科学基金项目(11474306;11404367;11474307);2016年湖北省省院合作专项项目

摘　　要：为了降低舱室内休息区域乘客双耳处的低频宽带噪声,采用最优维纳滤波器的设计准则,设计出一种基于局域空间有源降噪的多通道前馈有源头枕系统。实验对比了人工头在不同位置处和不同转动角度时两通道和四通道有源头枕系统在人耳处的降噪效果;进一步地,针对人头转动时控制效果变差的情况,提出了一种低复杂度的鲁棒性算法。仿真和实验表明,通道数量增加可使该系统在人耳附近获得更大的降噪量,使用鲁棒性算法的头枕系统在人头转动时有更好的控制性能。In order to control the low-frequency broadband noise around passengers’ears in cabins,a multichannel feedforward active headrest system is designed by means of local active noise control.The system is based on the principle of Wiener optimal filter.Control performances are compared with two and four-channel active headrests when the dummy head is at different positions and rotations.Furthermore,considering that the performance is degraded when the dummy head is rotated,a low-complexity robust algorithm is developed to improve the robustness of active headrests.Simulations and experiments show that an active headrest with more channels achieves better control performance and with the robust algorithm better performance can be attained when the dummy head is rotated.

关 键 词：有源头枕 鲁棒性 维纳滤波器 

分 类 号：TB535.2[理学—物理]