噪声与振动控制2018，Vol.38Issue(z1)：601-604,4.DOI:10.3969/j.issn.1006-1355.2018.Z1.129
基于近场声全息的载荷识别技术及试验验证
Analysis and Verification of Load Identification Technology based on Near-field Acoustic Holography
彭杉 1章艺 2张跃 2蒋昊 3周璞2
作者信息
- 1. 海军驻704所军代表室,上海 200031
- 2. 上海船舶设备研究所,上海 200031
- 3. 上海交通大学 振动冲击噪声研究所,上海 201100
- 折叠
摘要
Abstract
A load recognition technique based on near-field acoustic holography was proposed to identify the excitation source through the radiation acoustic measurement. For a cylinder structure, the radiation acoustic field generated by excitation was measured and the internal acoustic equivalent source was constructed by the sound field theory of the near-field acoustical holography. Then, the surface vibration velocity was reconstructed based on the equivalent source of the near-field acoustic holography. By translating the surface velocity to normal acceleration, the excitation force was identified. Compared with the results measured by the force sensor, the identification error of the excitation force at the main peak frequency is found to be below 5 dB, which meets the engineering application requirements.关键词
振动与波/声全息/等效源/载荷识别/正则化Key words
vibration and wave/acoustic holography/equivalent source/load identification/regularization分类
通用工业技术引用本文复制引用
彭杉,章艺,张跃,蒋昊,周璞..基于近场声全息的载荷识别技术及试验验证[J].噪声与振动控制,2018,38(z1):601-604,4.
