基于振速测量单全息面直接声场分离方法
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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.
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.
引文
[1]YONG T C,BOLTON J S,HALD J.Source visualization by using statistically optimized near-field acoustical holography in cylindrical coordinates[J].Journal of the Acoustical Society of America,2012,118(118):2355-2364.
[2]PASCAL J C,PAILLASSEUR S,THOMAS J H,et al.Patch near-field acoustic holography:regularized extension and statistically optimized methods[J].Journal of the Acoustical Society of America,2009,126(3):1264-1268.
[3]辛雨.基于空间声场变换的近场声全息参数选取及重建误差研究[D].合肥:合肥工业大学,2009.
[4]HALD J.Scaling of plane-wave functions in statistically optimized near-field acoustic holography[J].Journal of the Acoustical Society of America,2014,136(5):2687-2696.
[5]YONG T C,BOLTON J S,HALD J.Source visualization by using statistically optimized near-field acoustical holography in cylindrical coordinates[J].Journal of the Acoustical Society of America,2012,118(118):2355-2364.
[6]STOUT T A,WALL A T,GEE K L,et al.Obtaining acoustic intensity from multisource statistically optimized near-field acoustical holography[J].Journal of the Acoustical Society of America,2018,143(3):1722-1722.
[7]BI C X,ZHANG Y,ZHANG X Z,et al.Stability analysis of inverse time domain boundary element method for nearfield acoustic holography[J].Journal of the Acoustical Society of America,2018,143(3):1308-1317.
[8]VISSER R.On the use of higher order and irregularly shaped boundary elements in Nearfield Acoustical Holography[C].Eleventh International Congress on Sound&Vibration Icsv,2017.
[9]CANCLINI A,VARINI M,ANTONACCI F,et al.Dictionary-based equivalent source method for near-field acoustic holography[C].IEEE International Conference on Acoustics,Speech and Signal Processing.IEEE,2017:166-17.
[10]毛锦,徐中明,贺岩松,等.统计最优双面声场分离的改进算法[J].机械工程学报,2015,51(15):128-134.
[11]ZHANG Y B,CHEN X Z,JACOBSEN F.A sound field separation technique based on measurements with pressure-velocity probes[J].Journal of the Acoustical Society of America,2009,125(6):3518.
[12]张永斌,徐亮,毕传兴,等.基于声压-振速测量的单面声场分离技术[J].物理学报,2009,58(12):8364-8371.
[13]HALD J.Scaling of plane-wave functions in statistically optimized near-field acoustic holography[J].Journal of the Acoustical Society of America,2014,136(5):2687-2696.
[14]FERNANDEZGRANDE E,JACOBSEN F.Sound field separation with a double layer velocity transducer array(L)[J].Journal of the Acoustical Society of America,2011,130(1):5-8.
[15]BI C X,GENG L,ZHANG X Z.Separation of nonstationary multi-source sound field based on the interpolated time-domain equivalent source method[J].Mechanical Systems&Signal Processing,2016,72-73:745-761.
[16]毛锦,徐中明,黎术,等.单全息面的直接声场分离方法[J].声学学报,2017(1):115-121.
[2]PASCAL J C,PAILLASSEUR S,THOMAS J H,et al.Patch near-field acoustic holography:regularized extension and statistically optimized methods[J].Journal of the Acoustical Society of America,2009,126(3):1264-1268.
[3]辛雨.基于空间声场变换的近场声全息参数选取及重建误差研究[D].合肥:合肥工业大学,2009.
[4]HALD J.Scaling of plane-wave functions in statistically optimized near-field acoustic holography[J].Journal of the Acoustical Society of America,2014,136(5):2687-2696.
[5]YONG T C,BOLTON J S,HALD J.Source visualization by using statistically optimized near-field acoustical holography in cylindrical coordinates[J].Journal of the Acoustical Society of America,2012,118(118):2355-2364.
[6]STOUT T A,WALL A T,GEE K L,et al.Obtaining acoustic intensity from multisource statistically optimized near-field acoustical holography[J].Journal of the Acoustical Society of America,2018,143(3):1722-1722.
[7]BI C X,ZHANG Y,ZHANG X Z,et al.Stability analysis of inverse time domain boundary element method for nearfield acoustic holography[J].Journal of the Acoustical Society of America,2018,143(3):1308-1317.
[8]VISSER R.On the use of higher order and irregularly shaped boundary elements in Nearfield Acoustical Holography[C].Eleventh International Congress on Sound&Vibration Icsv,2017.
[9]CANCLINI A,VARINI M,ANTONACCI F,et al.Dictionary-based equivalent source method for near-field acoustic holography[C].IEEE International Conference on Acoustics,Speech and Signal Processing.IEEE,2017:166-17.
[10]毛锦,徐中明,贺岩松,等.统计最优双面声场分离的改进算法[J].机械工程学报,2015,51(15):128-134.
[11]ZHANG Y B,CHEN X Z,JACOBSEN F.A sound field separation technique based on measurements with pressure-velocity probes[J].Journal of the Acoustical Society of America,2009,125(6):3518.
[12]张永斌,徐亮,毕传兴,等.基于声压-振速测量的单面声场分离技术[J].物理学报,2009,58(12):8364-8371.
[13]HALD J.Scaling of plane-wave functions in statistically optimized near-field acoustic holography[J].Journal of the Acoustical Society of America,2014,136(5):2687-2696.
[14]FERNANDEZGRANDE E,JACOBSEN F.Sound field separation with a double layer velocity transducer array(L)[J].Journal of the Acoustical Society of America,2011,130(1):5-8.
[15]BI C X,GENG L,ZHANG X Z.Separation of nonstationary multi-source sound field based on the interpolated time-domain equivalent source method[J].Mechanical Systems&Signal Processing,2016,72-73:745-761.
[16]毛锦,徐中明,黎术,等.单全息面的直接声场分离方法[J].声学学报,2017(1):115-121.