信息物理融合系统高度实时性能的保障机制研究

项目名称： 信息物理融合系统高度实时性能的保障机制研究

项目编号： No.61271377

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 江明

作者单位： 安徽工程大学

项目金额： 80万元

中文摘要： 实时性是信息物理融合系统的重要性能指标之一。本项目从信息物理融合系统的体系结构出发，首先分析影响系统实时性的关键因素，然后分别从三个方面研究信息物理融合系统高实时性能的保障机制：1）针对实时任务调度的实时性保障机制，研究如何通过动态调整采样周期以及采样数据的发送间隔来提高系统的实时性；2）针对实时网络的实时性保障机制，研究如何通过增加新的实时网络协议层以及设计实时网络处理算法来提高系统的实时性；3）针对网络延时补偿的实时性保障机制，研究构建网络延时的连续隐马尔可夫模型从而实现对网络延时的预测，并基于该预测值研究控制单元中网络延时的补偿方法来提高系统的实时性。最后，以智能电网为应用对象进行计算机仿真分析和实际实验平台设计，制定智能电网的信息物理融合系统方案，验证并优化本项目提出的实时性保障方案，为我国智能电网的建设与发展提供重要理论参考。

中文关键词： 信息物理融合系统；实时性；实时任务调度；网络延时补偿；智能电网

英文摘要： Real-time is one of the important performances of Cyber-Physical Systems (CPSs). First, beginning with the architecture of CPSs, this project analyzes the key factors that affect the real-time performance of CPSs. Then, the safeguard mechanisms of the high real-time performance are proposed from three aspects: (1) According to the safeguard mechanism based on real-time scheduling, the real-time performance is improved by dynamically changing the sampling periods and the sending intervals of sampling data. (2) According to the safeguard mechanism based on real-time network, the real-time performance is improved by adding the new real-time network protocol layer and designing the real-time network processing algorithms. (3) According to the safeguard mechanism based on delay compensation, the real-time performance is improved by compensating for the network delays in controlling units after the delays are predicted based on their continuous hidden Markov models. Finally, the CPS based solving method is presented for the smart grid, and through the computer simulation platform and the actual experimental platform, the safeguard mechanisms proposed in this project are verified and optimized. This project will provide an important theoretical reference for our construction and development of smart grid.

英文关键词： Cyber-physical systems；Real-time performance；Real-time task scheduling；Compensation for network delays；Smart grid