针对声学法砝码体积测量装置的声学腔体内扬声器驱动信号的选择影响测量准确性的问题,提出了一种驱动信号参数确定方法。利用声学有限元法对声学腔体进行建模仿真,获得使体积误差最小的扬声器的最佳驱动信号幅值和频率点,同时在不同的幅值和频率点应用声学法砝码体积测量装置进行实际体积测量验证,结果表明:使体积测量误差最小的驱动信号参数与仿真结果一致。声学腔体的最佳测量频率为46Hz,该驱动频率下体积测量值与液体静力法测得值的偏差小于0.001cm3;在一定的测量范围内,驱动信号的幅值对声学法砝码体积测量准确性无影响。
Abstract
Aiming at the problem that the selection of the loudspeaker driving signal in the acoustic cavity of the acoustic method weight volume measuring device affects the measurement accuracy, a method for determining the driving signal parameters is proposed, which is a method of using the finite element method to model a simulation of the acoustic cavity, and getting the optimal driver signal amplitude and frequency point of the loudspeaker that minimizes the volume error.At the same time, the acoustic volume measurement device is applied at different amplitudes and frequency points for actual volume measurement verification.The results show that the driving signal parameters that minimize the volume measurement error are in good agreement with the simulation results.The optimal measurement frequency of the above acoustic cavity is 46Hz, and the deviation between the volume measurement value under the driving frequency and the value measured by the hydrostatic method is less than 0.001cm3.In a certain measuring range, the amplitude of driving signal has no effect on the accuracy of the acoustic method.
关键词
计量学 /
砝码体积测量 /
声学法 /
量值传递 /
仿真
Key words
metrology /
weight volume measurement /
acoustic method /
dissemination /
simulation
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参考文献
［1］胡满红, 王健, 张跃, 等. 基于声学原理的砝码体积测量方法研究［J］.仪器仪表学报, 2012, 33(10): 2337-2342.
Hu M H, Wang J, Zhang Y, et al. Study on measurement method of weight volume based on acoustic principle［J］.Chinese Journal of Scientific Instrument, 2012, 33(10): 2337-2342.
［2］陈超云,张进明,任学弟. 固体式密度天平校准系统的设计与实现［J］. 计量学报, 2018, 39(6): 832-835.
Chen C Y,Zhang J M,Ren X D. Design and Implementation of Solid Density Balance Calibration System［J］. Acta Metrologica Sinica, 2018, 39(6): 832-835.
［3］王肖磊, 王健, 钟瑞麟, 等. 声学法砝码体积测量系统的研究［J］.计量学报, 2013, 34(5): 457-460.
Wang X L, Wang J, Zhong R L, et al. Study on weight volume measurement system of acoustic method［J］.Acta Metrologica Sinica, 2013, 34(5): 457-460.
［4］Kobata T, Ueki M, Ooiwa A, et al. Measurement of the volume of weights using an acoustic volumeter and the reliability of such measurement ［J］.Metrologia, 2004, 41(2): S75-S83.
［5］Ueki M, Kobata T, Ueda K, et al. Measurements of the volume of weights from 1 g to 50 g using an acoustic volumeter［C］//SICE Annual Conference. Okayama, Japan, 2005, 1742-1747.
［6］Ueki M, Kobata T, Mizushima S, et al. Automated Volume Measurement for Weights using Acoustic Volumeter［C］//20th Conference on Measurement of Force, Mass and Torque. Merida, Mexico, 2007.
［7］张馨龙, 田光宇, 黄勇. 基于声学的高精度非接触式体积测量方法［J］.重庆理工大学学报, 2016, 30(7): 38-43.
Zhang X L, Tian G Y, Huang Y. High accuracy non-contact volume measurement method based on acoustics ［J］.Journal of chongqing university of technology, 2016, 30(7): 38-43.
［8］姚弘, 丁京鞍, 王健,等. 砝码的体积测量［J］.计量技术, 2009, (10): 35-37.
Yao H, Ding J A, Wang J, et al. Volume measurement of weights［J］.Measurement technology, 2009, (10): 35-37.
［9］温俊杰, 杨殿阁, 苗丰, 等. 声场可视化系统中声像阵列空间关系标定研究［J］.仪器仪表学报, 2017, 38(6): 1540-1546.
Wen J J, Yang D G, Miao F, et al. Calibration of spatial relationship of sound image array in sound field visualization system ［J］.Chinese Journal of Scientific Instrument, 2017, 38(6): 1540-1546.
［10］詹福良, 徐俊伟. Virtual. Lab Acoustics声学仿真计算从入门到精通［M］.西安: 西北工业大学出版社, 2013.
［11］陈厚桦, 冯晓娟, 任成, 等. 气体声学温度计中声波导管的优化设计研究［J］.计量学报, 2019, 40(1): 1-7.
Chen H H, Feng X J, Ren C, et al. Optimization of acoustic waveguides for acoustic gas thermometry［J］.Acta Metrologica Sinica, 2019, 40(1): 1-7.
［12］Doman D A, Warkentin A, Bauer R. Finite element modeling approaches in grinding ［J］.International Journal of Machine Tools & Manufacture: Design, research and application, 2009, 49(2): 109-116.
［13］Jeurissen R, van der Bos A, Reinten H, et al. Acoustic measurement of bubble size in an inkjet printhead［J］.Journal of the Acoustical Society of America, 2009, 126(5): 2184-2190.
［14］Yu K, Li Y S, Wang Z, et al. New method for acoustic signal collection based on compressed sampling ［J］.Chinese Journal of Scientific Instrument, 2012, 33(1): 105-112.
基金
国家重点研发计划“国家质量基础项目”(2016YFF0200103)
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