高速采样网络系统故障检测与滤波的统一方法

项目名称： 高速采样网络系统故障检测与滤波的统一方法

项目编号： No.61471323

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 张端金

作者单位： 郑州大学

项目金额： 80万元

中文摘要： 随着信息与通信技术的发展，网络应用更加广泛，网络的故障检测与滤波问题引起人们的普遍关注。然而现有的基于移位算子的故障检测与滤波方法，在高速采样时将导致病态条件问题，使系统性能下降。Delta 算子作为一种新的离散化方法，可有效克服上述问题，而且当采样周期趋近于零时，Delta 算子离散化模型趋近于原来的连续模型，可将连续与离散网络系统的故障检测与滤波纳入Delta算子统一框架。本项目开展基于Delta算子的网络系统建模、故障检测与滤波的统一方法。考虑网络延时、数据包丢失、通信传输受限条件下复杂网络系统的建模方法；给出具有随机时延和数据包丢失的网络系统故障检测与性能分析；研究带有时延和数据包丢失的网络系统鲁棒滤波方法；研究多种约束条件下系统故障检测与滤波的相容性求解与性能分析问题。项目的研究成果可为网络系统故障检测与滤波提供一种新的方法，在提高网络系统的可靠性和安全性方面具有重要的应用前景。

中文关键词： 自适应滤波；卡尔曼滤波；网络系统；故障检测；Delta算子

英文摘要： The rapid development of information and communication technology has significantly accelerated the application of network. Research on fault detection and filtering for networked systems has received much attention.As a new discrete time model representation,delta operator approach can avoid ill-conditioned problems caused by the conventional shift operator model based theory when fast sampling, and the delta operator model approaches the corresponding continuous time model as the sampling interval goes to zero. Thus fault detection and filtering problems of continuous time and discrete time systems can be considered in the unified delta operator framework.This project proposal is concerned with the problems of unified modeling,fault detection and filtering for the delta operator formulated networked systems.Modelling methods of complex networked systems with time delay,data packet dropout and limited communications are studied in terms of delta operator.Based on delta operator model,fault detection and performance analysis of networked systems with random delay and data packet dropout will be obtained.Robust filtering of networked systems with time delay and data missing is studied.Solution compatibility and performance analysis of fault detection and filtering for networked systems with multiple constraints is considered.The expected research results will present a new approach to fault detection and filtering of networked systems,which is applied to improve security and reliablity of networked systems.

英文关键词： Adaptive Filtering;Kalman Filtering;Networked Systems;Fault Detection;Delta Operator