报告详情
Simulation of Space Charge Characterization Signal Based on Laser Vibration Measurement
编号：240
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更新：2022-08-29 15:47:41 浏览：120次
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报告时间：暂无持续时间
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摘要
Piezoelectric sensor, the core device of pulsed electro-acoustic method (PEA), is limited by the properties of piezoelectric materials, so it is difficult to detect three-dimensional charge distribution at high temperature. Laser Doppler vibration measurement technology overcomes the shortcomings of PEA method, and can replace piezoelectric sensors to achieve high-precision detection of acoustic signals. In this paper, according to the performance parameters of laser Doppler vibrometer(LDV), a space charge signal characterization simulation model based on laser Doppler vibration measurement is established to study the influence of Gaussian pulse half peak width on the characterization signal. The results show that when the half peak width is 500ns, the frequency band of the vibration signal is within 3MHz, and the amplitude is 230pm. After filtering and quantization, the vibration signal can well characterize the charge distribution and the spatial resolution of 1mm can be achieved; When the half peak width is 10ns, the bandwidth of the vibration signal is within 200MHz, and the amplitude is 232.6pm. After filtering, the amplitude is attenuated to 13.75pm, which is lower than the displacement resolution of LDV, and the output signal is zero. The analysis shows that the half peak width should not be less than 500ns to ensure that the characteristic signal waveform can characterize the charge distribution without sacrificing spatial resolution.
关键词
space charge,laser doppler measurement,half peak width,Gaussian pulse signal
报告人
SUN Guoqiang
Shanghai Jiaotong University稿件作者
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重要日期
-
会议日期
09月25日
2022
至09月29日
2022
-
08月15日 2022
提前注册日期
-
09月10日 2022
报告提交截止日期
-
11月10日 2022
注册截止日期
-
11月30日 2022
初稿截稿日期
-
11月30日 2022
终稿截稿日期
主办单位
IEEE DEIS
承办单位
Chongqing University
联系方式
- Zhengyong Huang
- 61******@qq.com
历届会议
-
2020年09月06日 中国 Beijing
2020 IEEE International Conference on High Voltage Engineering and Application -
2018年09月10日 希腊
2018 IEEE International Conference on High Voltage Engineering and Application -
2016年09月19日 中国 Chengdu, China
2016 IEEE International Conference on High Voltage Engineering and Application
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