压电振子及流体对泵近场噪声的影响

张建辉; 路计庄; 夏齐霄; 王守印

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压电振子及流体对泵近场噪声的影响

微纳技术与精密机械 | 更新时间：2020-08-12

- 压电振子及流体对泵近场噪声的影响
- Influence of piezoelectric vibrator and fluid on close noise field of pump
- 光学精密工程 2006年14卷第4期页码：628-634
- 作者机构：
  
  1. 北京联合大学机电学院, 北京 100020
  2. 北京工业大学机械工程及应用电子技术学院,北京 100022
  3. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130022
- 作者简介：
- 基金信息：
  
  国家自然科学基金(No.50575007)();北京市教育委员会科技发展计划(No.KM-200510005014)。()
- DOI：
  中图分类号： TH38;TN384
- 收稿日期：2005-07-22，
  
  修回日期：2006-08-18，
  
  纸质出版日期：2006
- 稿件说明：
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张建辉, 路计庄, 夏齐霄, 王守印. 压电振子及流体对泵近场噪声的影响[J]. 光学精密工程, 2006,14(4): 628-634

ZHANG Jian-hui, LU Ji-zhuang, XIA Qi-xiao, WANG Shou-yin. Influence of piezoelectric vibrator and fluid on close noise field of pump[J]. Editorial Office of Optics and Precision Engineering, 2006,14(4): 628-634
张建辉, 路计庄, 夏齐霄, 王守印. 压电振子及流体对泵近场噪声的影响[J]. 光学精密工程, 2006,14(4): 628-634 DOI：

ZHANG Jian-hui, LU Ji-zhuang, XIA Qi-xiao, WANG Shou-yin. Influence of piezoelectric vibrator and fluid on close noise field of pump[J]. Editorial Office of Optics and Precision Engineering, 2006,14(4): 628-634 DOI：

摘要

研究了压电振子的弯曲振动形变及振动辐射噪声。首先建立压电泵压电振子振动方程

导出弯曲振动形变函数;提出用微平面活塞振动理论简化压电振子振动模型

推导了近场声压理论计算方程及泵内流体对泵噪声贡献量方程;最后把理论计算结果与试验结果进行比较分析

分别得出在不同频率下压电振子及泵内流体对泵噪声贡献的大小。在输入频率为50 Hz时

泵噪声的理论值为45 dB

实际值为37 dB

泵内流体对泵噪声的影响较大

实际值与理论值的相对误差为21.6%;在输入频率为120 Hz时

泵噪声的理论值为61 dB

实际值为62 dB

泵内流体对泵噪声的影响较小

实际值与理论值的相对误差为1.6%

证明了本研究所提出理论的正确性。

Abstract

The flexural vibration deformation and vibration radiation noise of piezoelectric vibrator were researched. The vibration equations were built to deduce the flexural vibration deformation functions. Then

the simplified vibration model of piezoelectric vibrator was introduced using vibration theories of micro-plane piston. Also

theoretical equation of sound pressure in close noise field and noise contribution equation of fluid in pump were deduced. Finally

with comparison of the theoretical calculation and experimental testing

the results show that the theoretical noise level of pump is 45 dB and the actual noise level is 37 dB

when the input frequency is 50 Hz. Under this frequency

the fluid in the pump exerts great influence on the pump noise

and the relative error between the testing value and theoretical calculation is 21.6%. The theoretical noise level is 61 dB and the actual noise level is 62 dB

when the input frequency is 120 Hz. In this case

fluid exerts little influence on the pump noise

and the relative error between the testing value and theoretical calculation is 1.6%. It is concluded that contribution quantities of piezoelectric vibrator and fluid in pump under different frequencies are obtained

which proves that the theory introduced by this research agrees with the experimental results well.

关键词

Keywords

references

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