Theoretical characterization of a gas path debris detection monitoring system based on electrostatic sensors and charge amplifiers

被引：34
作者：
Addabbo, T. [1 ]
Fort, A. [1 ]
Garbin, R. [2 ]
Mugnaini, M. [1 ]
Rocchi, S. [1 ]
Vignoli, V. [1 ]
机构：
[1] Univ Siena, Dept Informat Engn & Math Sci, I-53100 Siena, Italy
[2] GE Oil & Gas Nuovo Pignone, I-50127 Florence, Italy
来源：
MEASUREMENT | 2015年 / 64卷
关键词：
Condition monitoring; Electrostatic sensor; Charge amplifier; Gas turbo-machines; Debris monitoring; ANGULAR VIBRATIONS;
D O I：
10.1016/j.measurement.2014.12.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The electrostatic detection of gas path debris has been proposed in literature as a tool to monitor mechanical component faults along the combustion gas path of turbo-machines. In this paper we discuss the general theoretical characterization of a debris detection monitoring system based on electrostatic sensors and charge amplifiers. We first provide the analytical expression of the time-varying charge induced by the moving debris on the sensor surface. After introducing a simplified electric model of the charge amplifier, we discuss the effects of the amplifier bandwidth on the shape of the output voltage signal. Theoretical results have been validated with experiments. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：138 / 146
页数：9
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