| 基于双谐振声波幅相控制的高声强级校准 |
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| 引用本文： | 杨晓伟,闫磊,朱刚,刘鑫,白天.基于双谐振声波幅相控制的高声强级校准[J].宇航计测技术,2018,38(6):21. |
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| 作者姓名： | 杨晓伟 闫磊 朱刚 刘鑫 白天 |
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| 作者单位： | 1、北京航天计量测试技术研究所，北京 100076 |
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| 摘 要： | 对声强测量仪高声强级校准方法的发展历程、现状及水平进行论述，采用两个声压级高、失真度低的声源研发了高声强级校准系统，提出了双谐振声波幅相控制的新方法使声强级校准在频率500Hz时上限可达150dB以上,而失真度小于0.5%。给出高声强校准系统的校准实例和不确定度评估。
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| 关 键 词： | 声强测量仪 高声强级 校准 谐振 |
Calibration of High Sound Intensity Lever Based on Amplitude-Phase Control for Dual Resonance Sound Waves |
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| YANG Xiao-wei,YAN lei,ZHU Gang,LIU Xin,BAI Tian.Calibration of High Sound Intensity Lever Based on Amplitude-Phase Control for Dual Resonance Sound Waves[J].Journal of Astronautic Metrology and Measurement,2018,38(6):21. |
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| Authors: | YANG Xiao-wei YAN lei ZHU Gang LIU Xin BAI Tian |
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| Institution: | 1、Beijing Aerospace Institute for Metrology and Measurement and Technology, Beijing 100076,China |
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| Abstract: | The calibration methods of high intensity lever for sound intensity probe, its present and history are described. Based on the two sound sources with high pressure level and low distortion, the high sound intensity lever calibration system has been developed. A new method named amplitude-phase control for dual resonant sound waves is proposed, and new calibration system can generate high sound intensity levels up to 150dB at 500Hz with distortion(＜0.5%). The calibration example and uncertainty evaluation of the new system are also given. |
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| Keywords: | Sound intensity probe Sound intensity lever Calibration Resonant vibration |
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