面向工厂自动化无线网络的时间同步方法

发布时间：2018-06-15 04:18

本文选题：工厂自动化 + 无线网络　；参考：《计算机研究与发展》2014年03期

【摘要】：时间同步技术是保障工厂自动化无线网络高实时性与高可靠性的支撑技术.工厂自动化无线网络技术指标要求时间同步的精度成为同步方法的重心,在商用的IEEE 802.11硬件平台上,设计并实现了基于时分多址(time division multiple access,TDMA)机制并由时钟偏差测量、时钟偏差预测和时钟漂移补偿3部分算法组成的高精度时间同步方法.实验证明由于该同步算法相对于传统的双向同步算法加入了时钟偏差预测与补偿机制,使其有精度高、可靠性高、自适应性强等优势,有助于实现工厂自动化无线网络微秒级的TDMA时隙调度.
[Abstract]:Time synchronization technology is the support technology to ensure high real-time and high reliability of factory automation wireless network. The technical specifications of factory automation wireless network require the precision of time synchronization to be the focus of the synchronization method. On the commercial IEEE 802.11 hardware platform, the time division multiple access (TDMA) mechanism based on time division multiple access (TDMA) is designed and implemented, and the clock bias is measured. A high precision time synchronization method composed of three algorithms: clock bias prediction and clock drift compensation. Experimental results show that the synchronization algorithm has the advantages of high precision, high reliability, strong adaptability and so on, because of the addition of clock offset prediction and compensation mechanism compared with the traditional bidirectional synchronization algorithm. It is helpful to realize TDMA slot scheduling of wireless network in factory automation.
【作者单位】：中国科学院沈阳自动化研究所;中国科学院大学;
【基金】：国家自然科学基金项目(61174026) 国家“八六三”高技术研究发展计划基金项目(2011AA040101) 国家“九七三”重点基础研究发展计划基金项目(2010CB3034705) 中国科学院知识创新工程重要方向性项目(KGCX2-EW-104)
【分类号】：TN919.34

【参考文献】