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计算机工程 ›› 2008, Vol. 34 ›› Issue (11): 105-107. doi: 10.3969/j.issn.1000-3428.2008.11.038

• 网络与通信 • 上一篇    下一篇

网络化测试系统中时滞误差的动态补偿

李 鹏,林家骏   

  1. (华东理工大学自动化研究所,上海 200237)
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-06-05 发布日期:2008-06-05

Dynamic Compensation of Time-delay Error in Networked Measurement System

LI Peng, LIN Jia-jun   

  1. (Research Institution of Automation, East China University of Science and Technology, Shanghai 200237)
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-06-05 Published:2008-06-05

摘要: 以基于网络的动态测试为研究背景,在无GPS等时钟同步设备的条件下,设计一个基于LMS算法的自适应估计器,对参比系统、被测系统及误差处理器的时钟源同步误差进行在线估计,实现了对网络时延引起的时滞误差的动态补偿。仿真结果表明,该自适应时延估计器能够有效地对时钟源同步误差进行估计,网络化测试系统动态补偿后的总误差比补偿前下降了85%。

关键词: 网络化测试, 时滞误差, 自适应估计, 动态补偿

Abstract: This paper is concerned with the Networked Dynamic Measurement System(NDMS). An adaptive estimator, based on LMS algorithm, is designed to estimate the time-source synchronous error without the GPS and other time synchronization equipment, and to achieve the dynamic compensation of time-delay error. The results of simulation show that the adaptive estimator can estimate the time-source synchronous error effectively, and the total error drops by 85%, compared with that hasn’t been compensated.

Key words: networked measurement, time-delay error, adaptive estimation, dynamic compensation

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