Aero-engine exhaust electrostatic monitoring and signal characteristics analysis

被引：0
|
作者：
Fu Y. [1 ]
Yin Y. [2 ]
Zuo H. [2 ]
机构：
[1] Institute of Aviation Engineering, Civil Aviation University of China, Tianjin
[2] College of Civil Aviation, Nanjing University of Aeronautics and Astronautics, Nanjing
来源：
| 2018年 / Science Press卷 / 39期
关键词：
Electrostatic sensor; Exhaust; Experiment; Mathematical analysis; Physical model;
D O I：
10.19650/j.cnki.cjsi.j1702129
中图分类号：
学科分类号：
摘要：
The application and development of exhaust electrostatic sensor in aero-engine gas-path condition monitoring are introduced. The physical model of exhaust electrostatic sensor and the principle of exhaust electrostatic monitoring are analyzed. Then, the mathematical space model of exhaust electrostatic sensor is formulated. Its specific mathematic expression of sensor output signal is achieved and is utilized to analyze main influence factors of output signal generated by exhaust electrostatic sensor. In the following experimental study, a testbed is built and the main influence factor of the output signal is selected as the independent variable. The comparison experiments of three factors are carried out and mathematic expression is validated by the quantitative experimental results. The experimental results show that the charge, speed and motion position of oil drop are three main influence factors on the electrostatic sensing signal. © 2018, Science Press. All right reserved.
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收藏
页码：160 / 168
页数：8
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