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NUCLEAR FUSION AND PLASMA PHYSICS ›› 2009, Vol. 29 ›› Issue (3): 279-283.

• Nuclear Fusion Engineering and Technology • Previous Articles     Next Articles

A hybrid digital-analog long-time integrator based on digital signal processing

DU Xiao-ying, JI Zhen-shan, WANG Yong   

  1. (Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031)
  • Received:2008-07-30 Revised:2009-02-10 Online:2009-09-15 Published:2010-08-18
  • Supported by:

    科学院知识创新工程重要方向性项目(KJCX3,SYW.N4);国家自然科学基金资助项目(10835009)

基于DSP的模数混合长时间积分器

杜晓英, 季振山, 王勇   

  1. (中国科学院等离子体物理研究所,合肥 230031)
  • 作者简介:杜晓英(1983-),女,安徽黄山人,硕士,从事电子技术和数据采集的研究。

Abstract:

A hybrid long-time intelligent based on digital signal processing was designed and developed. To compute the drift’s slope of the integrator in certain time t by using DSP, the drift value is obtained, so the drift can be decreased. The results of experiment on EAST tokamak show that this integrator without drift can be used in measuring of diagnostic signal reliably on tokamak.

Key words: Integrator, DSP, Drift, Slope

摘要:

设计了基于数字信号处理技术的混合式长时间积分器,利用DSP计算出一定时间t内积分器的漂移斜率,从而计算出漂移量,进行扣除,达到减少漂移的目的。EAST装置上的实验结果证明,积分器解决了零点漂移的问题,适合于托卡马克放电实验中诊断信号的测量。

关键词: 积分器, 数字信号处理, 漂移, 斜率

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