期刊 基于振速测量单全息面直接声场分离方法  

Direct Sound Field Separation Method based on Single Holographic Layer Particle Velocity Measurements

作  者:田克权 毛锦 李林聪 崔亚辉[1] 杜进辅[1] 

TIAN Kequan;MAO Jin;LI Lincong;CUI Yahui;DU Jinfu(School of Mechanical and Precision Instrument Engineering, Xi’an University of Technology,Xi’an 710048, China)

机构地区:[1]西安理工大学机械与精密仪器工程学院

出  处:《噪声与振动控制》2019年第2期27-31,共5页Noise and Vibration Control

Direct Sound Field Separation Method based on Single Holographic Layer Particle Velocity Measurements

基  金:国家自然科学基金青年基金资助项目(61701397;51705419);陕西省自然科学研究基础研究计划资助项目(2017JQ5011)

摘  要:为了更精确分离质点振速,以波叠加法作为声场分离算法基础,提出单全息面测量振速直接声场分离方法。建立单面振速测量声场分离模型,并推导理论计算方法,通过数值仿真,分析算法的计算精度,证明该方法可以有效分离声场。然后对比所提分离方法和单面声压测量声场分离方法分离简单源和脉动声源的误差,结果表明:单面振速测量的直接声场分离方法可以有效分离目标声源,而且可以获得更高的振速分离精度。

In order to separate the vibration velocity of the particle accurately, a direct sound field separation method for measuring the vibration velocity of a single holographic surface is proposed based on the wave superposition approach. Firstly, a sound field separation model for single-plane vibration velocity measurement is established and the theoretical calculation method is derived. Through the numerical simulation, the computation accuracy of this algorithm analyzed. It is verified that this method can effectively separate the sound field. Then, errors for separating the simple source and the pulsating sound source using this method and the single-sided sound pressure measurement method are analyzed and compared. The results show that the direct sound field separation method for single-sided vibration velocity measurement can effectively separate the target sound source and obtain higher accuracy of the vibration velocity separation.

关 键 词:声学 声场分离 波叠加 质点振速 单全息面 

acoustics sound field separation wave superposition particle velocity single holographic surface 

分 类 号:TB532[理学—物理] TB533[理学—声学]

 

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