Sampling theorem to periodic non-continuous signal from cavitation of piezoelectric pump

ZHANG Jian-hui; XIA Qi-xiao; WANG Da-kang; WANG Shou-yin; Onuki AkiYoShi

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Sampling theorem to periodic non-continuous signal from cavitation of piezoelectric pump

更新时间：2020-08-12

- Sampling theorem to periodic non-continuous signal from cavitation of piezoelectric pump
- Optics and Precision Engineering Vol. 10, Issue 5, Pages: 476-482(2002)
- 作者机构：
  
  1. 北京工业大学, 北京, 1000022
  2. 中国科学院长春光学精密精械与物理研究所,吉林长春,130022
  3. 日本山形大学, 工学部山形,日本,992-8510
  4. 北京联合大学, 北京, 100020
- 作者简介：
- 基金信息：
- DOI：
  CLC： TH38
- Received：17 February 2002，
  
  Revised：15 July 2002，
  
  Published Online：15 October 2002，
  
  Published：15 October 2002
- 稿件说明：
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张建辉, 夏齐霄, 王大康, 王守印, 小贯晃义. 抽样定理在周期性非连续信号的压电泵气穴现象中的应用方法[J]. 光学精密工程, 2002,(5): 476-482

ZHANG Jian-hui, XIA Qi-xiao, WANG Da-kang, WANG Shou-yin, Onuki AkiYoShi. Sampling theorem to periodic non-continuous signal from cavitation of piezoelectric pump[J]. Editorial Office of Optics and Precision Engineering, 2002,(5): 476-482
张建辉, 夏齐霄, 王大康, 王守印, 小贯晃义. 抽样定理在周期性非连续信号的压电泵气穴现象中的应用方法[J]. 光学精密工程, 2002,(5): 476-482 DOI：

ZHANG Jian-hui, XIA Qi-xiao, WANG Da-kang, WANG Shou-yin, Onuki AkiYoShi. Sampling theorem to periodic non-continuous signal from cavitation of piezoelectric pump[J]. Editorial Office of Optics and Precision Engineering, 2002,(5): 476-482 DOI：

摘要

抽样时间间隔由抽样定理来决定.压电泵气穴现象所摄取的连续画像也应遵从该定理来抽取得到不连续的静止画像.可是

作为由振动形式驱动的压电泵

气穴现象只发生在吸入工程

了解其气穴现象统计特性时

如果按着抽样定理

在吐出工程的半周期

即使是不发生气穴现象也必须依次抽样.若利用这样的数据系统

数据的样本将过大

对其解析的时间性与经济性均不利.而且

在吐出工程的半周期

是与气穴无关系的信号.因此对于气穴现象数据系统

可以说是输入了错误情报信号.为此

开发了适用于压电泵气穴现象周期性非连续信号的抽样定理的方法;同时

利用这个方法

以有阀压电泵为例

调查了该泵的气穴现象特性之一的中心多发性

发现里利用新方法测得的中心多发几率高于原方法.

Abstract

A general means of data processing is a sampling method

in which continuous analog data are measured non-continuously at certain time intervals as digital data

and the median value is ignored. The sampling time intervals are determined by the sampling theorem. Since both valve and no-valve piezoelectric pumps are pumps driven in a vibration form

they send a periodic non-continuous signal to cavitation. The sampling theorem is not applicable to a non-continuous signal. For this reason

the authors developed a method to apply the cavitation in a pump driven in the piezoelectric vibration form as a periodic non- continuous signal. And a sampling system using this method was manufactured.

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Keywords

references

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Onuki A,Zhang J_H.Char acter istics of Cavitation of Piez oelectr ic Pump[A].Proceeding of the N inth Asian Congr ess of F luid M echanics[C].I ran,2002,92_98.

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