基于导纳函数的加筋板物理属性辨识

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• 英文论文题名：Admittance based physical attributes identification of ribbed plates
• 论文作者：田旭华 ; 陈克安
• 英文论文作者：TIAN Xv-hua ; CHEN Ke-an ; School of Marine Science and Technology ; Northwest Polytechnic University
• 年：2016
• 作者机构：西北工业大学航海学院环境工程系;
• 论文关键词：导纳函数 ; 物理属性 ; 声目标识别
• 英文论文关键词：admittance function ; physical parameters ; sound source identification
• 会议召开时间：2016-10-25
• 会议录名称：2016年中国造船工程学会水中目标特性学组学术交流会论文集
• 语种：中文
• 分类号：O429
• 学会代码：SXJS
• 会议名称：2016年中国造船工程学会水中目标特性学组学术交流会
• 会议地点：中国辽宁大连
• 主办单位：中国船舶重工集团公司第七六0研究所水中测控技术重点实验室
• 学会名称：《声学技术》编辑部
• 页数：6
• 文件大小：898k
• 原文格式：D
• 会议级别：全国

摘要

本文以导纳函数为桥梁,通过相关分析的方法分别建立了金属加筋板的导纳函数特征与声源物理属性、导纳函数特征与冲击声特征之间的单调相关关系。在此相关关系的基础上,间接建立了基于等效矩形带宽gamatone能量窗和FFT变换能量窗的四分位矩等冲击声音色特征以及基频、谱初始斜率、幅值因子等脉冲力冲击声特征与声源材质物理属性之间的对应关系。将得到的4组冲击声特征用于5种常见的金属合金加筋板的声源材质分类辨识,结果表明:4组有效特征能够100%识别出具有5种不同材料的加筋板,相对于一般的特征,具有更高的识别率。以导纳函数为桥梁建立冲击声特征与声源物理属性之间的联系的方法为声源物理属性辨识和声目标识别研究提供了新的思路。
Connections between admittance features and physical attributes of ribbed plate sound source are built using correlation analysis method based on admittance functions. Thus, relationships of sound feature(ERBgam_Frame Erg_iqr, ERBfft_Frame Erg_ iqr from impact sound and fundamental frequency, initial spectral slope, crest factor from impulse impact sound)and physical attributes are confirmed indirectly according to the results of correlation analysis. These relationships are applied into the recognition of 5 kinds of ribbed plates with 5 different metal alloy material, a total accuracy of 100% is acquired. Results of several further experiments show that these 5 features are more efficient than other features. The method that builds the relationships between admittance features and physical attributes through admittance functions creates a new sight of the sound source identification.

引文

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