麦克风阵列安装偏差引起的旋转声源定位误差

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英文篇名：Error in rotating sound source localization caused by installation deviation of microphone array 作者：鲍欢 ; 杨明绥 ; 马威 英文作者：BAO Huan;YANG Mingsui;MA Wei;School of Mechanical Engineering,Shanghai Jiao Tong University;Engineering Research Center of Gas Turbine and Civil Aero Engine,Ministry of Education,Shanghai Jiao Tong University;Shenyang Engine Research Institute,Aero Engine Corporation of China;School of Aeronautics and Astronautics,Shanghai Jiao Tong University; 关键词：麦克风阵列 ; 声源定位 ; 安装偏差 ; 定位误差 ; 旋转声源 英文关键词：microphone array;;sound source localization;;installation deviation;;localization error;;rotating sound source 中文刊名：HKDI 英文刊名：Journal of Aerospace Power 机构：上海交通大学机械与动力工程学院;上海交通大学燃气轮机与民用航空发动机教育部工程研究中心;中国航空发动机集团有限公司沈阳发动机研究所;上海交通大学航空航天学院; 出版日期：2019-08-06 出版单位：航空动力学报 年：2019 期：v.34 基金：中央高校基本科研业务费专项资金 语种：中文; 页：HKDI201908009 页数：9 CN：08 ISSN：11-2297/V 分类号：82-90

摘要

对旋转声源定位中3种常见阵列安装偏差即角度偏差、x轴向偏移偏差、z轴向偏移偏差导致的定位误差进行了详细研究。结果表明:当角度偏差在-10°～10°范围内,声源定位位置误差随角度偏差呈近似线性变化,最大定位位置误差为0.089m,定位强度误差呈随机变化,其中最小定位强度误差为0.97dB,最大为4.69dB;当x轴向偏移偏差在-0.1～0.1m范围内,声源定位位置误差随x轴向偏移偏差呈近似线性变化,最大定位位置误差为0.098m,定位强度误差呈随机变化,其中最小定位强度误差为0.91dB,最大为4.94dB;当z轴向偏移偏差在-0.1～0.1m范围内,最大定位位置误差为0.01m,正偏移偏差引起的定位强度误差总体小于负偏移偏差,其中最小定位强度误差为0.81dB,最大为4.51dB。研究结果可为麦克风阵列在实际应用中控制测量误差提供指导。
        The localization error caused by three types of common array installation deviation,namely angular deviation,x-axis offset deviation and z-axis offset deviation was studied in detail in the rotating sound source localization.Research showed that when angular deviation was within the range from-10°to 10°,the position error varied approximately linearly with the angular deviation,the maximum positioning error was 0.089 m,the strength error was randomly distributed,the minimum strength error was 0.97 dB and the maximum strength error was 4.69 dB;when x-axis offset deviation was within the range from-0.1 m to 0.1 m,the position error varied approximately linearly with x-axis offset deviation,the maximum positioning error was 0.098 m,the strength error was randomly distributed,the minimum strength error was 0.91 dB and the maximum strength errors was 4.94 dB;when z-axis offset deviation was within the range from-0.1 mto 0.1 m,the maximum positioning error was 0.01 m,strength error caused by the positive z-axis offset deviation was smaller than the negative z-axis offset deviation generally,the minimum strength error was 0.81 dB and the maximum strength error was 4.51 dB.Research results can provide guidance for controlling the localization error of microphone arrays in practical applications.

引文

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