航空学报 > 2003, Vol. 24 Issue (2): 167-169

双栅极空气计数器系统参数优化设计方法

史仪凯   

  1. 西北工业大学机电工程学院 陕西西安 710072
  • 收稿日期:2002-02-05 修回日期:2002-08-01 出版日期:2003-04-25 发布日期:2003-04-25

New Design Method for Sensor System Parameter of Double Grid Air Counter

SHI Yi-kai   

  1. College of Mechanical and Electrical Engineering; Northwestern Polyt echnical University; Xi'an 710072; China
  • Received:2002-02-05 Revised:2002-08-01 Online:2003-04-25 Published:2003-04-25

摘要: 基于金属材料微裂纹检测传感器系统放电脉冲的形成过程, 建立了离散化放电的数学模型, 提出了传感器系统参数优化设计的一种新方法。实验结果表明, 采用该理论设计的传感器系统参数, 避免了经验公式设计的片面性, 保证了传感器系统无损检测的可靠性和精确性。

关键词: 传感器系统, 无损检测, 低能电子, 工作电压

Abstract: A discrete discharging model is built up, based on analyzing the discharging course of a double grid aircounter (DGAC) . A new optimization method of DGAC parameter design is developed. The study shows that theworking voltage is closely r elated to the geometr ic parameter of DGAC, the sensitivity of the circuit and the numberof discharges. Exper iment shows t hat t he novelmethod can be used in parameter design of DGAC; not only can it effectively avoid one-sidedness by the traditional design, but also the hardware circuit design of control systems is veryeasy and trustwort hy.

Key words: sensor system, non destructive testing, low energy electron, working voltage

中图分类号: