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非接触式静电电位测量系统设计 总被引:3,自引:0,他引:3
本文以静电电位测量系统的通用电路模型为基础,建立了调制型电位计的数学模型,分析了跌落系数、读数和误差与系统参数的关系;并讨论了设计方面的问题;为设计和评价静电电位计提供了理论和计算的依据。作者据此设计与研制的ZC-1型静电电位计进一步验证了分析理论的正确性。 相似文献
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静电多路巡检报警系统设计 总被引:2,自引:0,他引:2
冯喜 《天津工业大学学报》2002,21(1):32-37
为解决易燃易爆场合静电的测试报警问题,设计了此静电多路巡检报警系统,其硬件部件由传感器,主控器、显示器、打印机、报警器5部分组成,传感器采取调制感应式,并采用镀膜屏蔽技术,消除了零漂,提高了抗干扰能力,实现了系统的高可靠性,高稳定性和高性价比。 相似文献
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冯喜 刘阿娣 周楚 邹晓岚 庄革 王守信 王明远 刘海庆 丁卫星 张寿彪 吴木泉 朱翔 郝保龙 张津 刘朝阳 季佳旭 仲小明 刘深 谢锦林 林晓东 黄建军 高翔 万元熙 《等离子体科学和技术》2023,(11):63-73
To interpret the common symmetric peaks caused by the large-scale structure in the complex S(f) spectrum from the heterodyne Doppler reflectometry(DR) measurement in EAST, a 2D circular-shaped O-mode full-wave model based on the finite-difference time-domain method is built. The scattering characteristics and the influences on the DR signal from various scales are investigated. When the structure is located around the cutoff layer, a moving radial or poloidal large-scale structure kθ■... 相似文献
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The Doppler reflectometer(DR), a powerful diagnostic for the plasma perpendicular velocity(u⊥) and turbulence measurement, has been widely used in various fusion devices. Many efforts have been put into extracting the Doppler shift from the DR signal. There are several commonly used methods for Doppler shift extraction, such as the phase derivative, the center of gravity, and symmetric fitting(SFIT). However, the strong zero-order reflection component around 0 k Hz may interfere with the calcula... 相似文献
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