Double-nozzle piezoelectric servovalve

CHENG Guang-ming; LI Peng; YANG Zhi-gang; E Shi-ju; LIU Jian-fang

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Double-nozzle piezoelectric servovalve

更新时间：2020-08-12

- Double-nozzle piezoelectric servovalve
- Optics and Precision Engineering Vol. 13, Issue 3, Pages: 276-282(2005)
- 作者机构：
  
  吉林大学机械科学与工程学院,吉林长春 130025
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN384;TH703.6
- Received：22 March 2005，
  
  Revised：18 April 2005，
  
  Published Online：30 June 2005，
  
  Published：30 June 2005
- 稿件说明：
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CHENG Guang-ming, LI Peng, YANG Zhi-gang, et al. Double-nozzle piezoelectric servovalve[J]. Optics and precision engineering, 2005, 13(3): 276-282.
DOI：

CHENG Guang-ming, LI Peng, YANG Zhi-gang, et al. Double-nozzle piezoelectric servovalve[J]. Optics and precision engineering, 2005, 13(3): 276-282. DOI：

摘要

设计了一种利用压电双晶片驱动器代替传统双喷嘴电液伺服阀力矩马达驱动部分的新型电液伺服阀

以期改善现有该型阀的动、静态特性。通过试验得出

设计的压电双晶片驱动器输出位移为82.5 μm

全量程位移波动小于0.7 μm

谐振频率1.2 kHz

完全满足双喷嘴电液伺服阀对驱动器的要求。试验表明:基于此驱动器的电液伺服阀在频率低于100 Hz的范围内具有良好的线性度

克服了传统双喷嘴电液伺服阀在频宽和抗电磁干扰能力等方面的不足。

Abstract

To improve the static and dynamic characteristics of traditional electrohydraulic servovalves

a new type electrohydraulic servovalve was designed by using piezoelectric actuator based on bimorph instead of the moment motor of conventional servovalves. The results show that the output distance of designed piezoelectric bimorph actuator is 82.5 μm

fluctuation in full scale is less than 0.7μm

and resonance frequency is 1.2 kHz. It can meet the requests of servovalve. And the designed servovalve owns perfect linearity when the frequency is less than 100 Hz. The lacks of traditional electrohydraulic servovalves in bandwidth and anti-electromagnetic ability have been overcome.

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references

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