A novel vibration mode testing method for cylindrical resonators based on microphones.

A novel vibration mode testing method for cylindrical resonators based on microphones.
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基于传声器的圆柱形谐振器振型测试新方法

DOI:
10.3390/s150101954
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发表时间:
2015-01-16
期刊:
Sensors (Basel, Switzerland)
影响因子:
--
通讯作者:
Wang J
Wang J
中科院分区:
其他
文献类型:
--
作者:
Zhang Y;Wu Y;Wu X;Xi X;Wang J

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非接触测试是研究圆柱形谐振器振动特性的重要手段。对于由压电电极激励的振动柱面陀螺仪,柱面谐振器的模式测试比较困难。本文提出了一种新的圆柱形谐振器振动测试方法。该方法利用尺寸小、方向性准确的MEMS传声器来测量圆柱形谐振器的振动。建立了测试系统,并利用该系统对谐振器的振动模式进行了测试。实验结果表明,振型节点的方位分辨率优于0.1°。该方法还具有成本低、操作方便等优点。它可以用于振动测试,并提供准确的结果,这对研究振动圆柱陀螺仪的振动模式和热稳定性具有重要意义。
Non-contact testing is an important method for the study of the vibrating characteristic of cylindrical resonators. For the vibratory cylinder gyroscope excited by piezo-electric electrodes, mode testing of the cylindrical resonator is difficult. In this paper, a novel vibration testing method for cylindrical resonators is proposed. This method uses a MEMS microphone, which has the characteristics of small size and accurate directivity, to measure the vibration of the cylindrical resonator. A testing system was established, then the system was used to measure the vibration mode of the resonator. The experimental results show that the orientation resolution of the node of the vibration mode is better than 0.1°. This method also has the advantages of low cost and easy operation. It can be used in vibration testing and provide accurate results, which is important for the study of the vibration mode and thermal stability of vibratory cylindrical gyroscopes.
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影响因子: --
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