scholarly journals Fault Detection for Network Control System with Multiple Packet Loss

2015 ◽  
Author(s):  
Yuqing Li ◽  
Qun Zhang
Keyword(s):  
Control System ◽  
Fault Detection ◽  
Packet Loss ◽  
Network Control ◽  
Network Control System

Fault Diagnosis Method for a Network Control System with Long-Time Delay and Data Packet Loss Based on H∞ Filtering

2013 ◽  
Vol 846-847 ◽  
pp. 795-798
Author(s):  
Jiao Meng ◽  
Qi Hua Xu ◽  
Xiao Xiao
Keyword(s):  
Control System ◽  
Fault Diagnosis ◽  
Time Delay ◽  
Packet Loss ◽  
Estimation Error ◽  
Network Control ◽  
Data Packet ◽  
Practical Significance ◽  
Network Control System ◽  
Long Time

Improving network control system---NCS reliability and safety has important practical significance because NCS is a hot research subject in these years. Fault diagnosis methods are researched in this paper according to NCS with long-time delay and data packet loss. Firstly, given a NCS with long-time delay, a state observer is structured. Secondly, make the state estimation error equation equivalent to an asynchronous dynamical system having event incidence constraint according to whether the system having data packets loss. The problem of fault diagnosis is converted to filtering problem through structuring filtering residual system based on the observer, then giving a corresponding filter designing algorithm. The designed fault diagnosis filter system not only make sure the stability of the closed loop system but also make the residual systems norm less than given reduction level. Finally, the simulation results prove that the algorithm can diagnose faults effectively.

Simulation of Fault Detection in the Wireless Networked Control System

2013 ◽  
Vol 846-847 ◽  
pp. 778-781
Author(s):  
Hong Liang Guo ◽  
Shao Ying Kong
Keyword(s):  
Control System ◽  
Time Delay ◽  
Fault Detection ◽  
Wireless Network ◽  
Detection Method ◽  
State Space Model ◽  
Failure Detection ◽  
Networked Control System ◽  
Network Control ◽  
Network Control System

Wireless network control system is characterized by high uncertain delay time, thus the state of the system can not be fully observed. The fault characteristic is interfered by time delay so to be unstable, leading inaccurate fault detection. Traditional fault detection method of wireless network control system is usually based on the characteristics of the stability of the network status data. If the network has time delay fluctuations, it is unable to obtain accurate fault detection results. This paper presents a stochastic delay fault detection method. It builds a state space model of the system, analyzes the delay vector between the sensor end of the system and the controller end, depending on the delay residual signal of the system and the corresponding evaluation function to obtain the system failure detection result. The final simulation result shows that this method has high accuracy in the detection of Stability and randomness of the wireless network fault detection. Thus it is an effective wireless network control system fault detection method.

Simulation Analysis of Automatic Grouting Network Control System Based on Matlab

2013 ◽  
Vol 457-458 ◽  
pp. 788-792
Author(s):  
Guo Qing Qiu ◽  
Ming Li ◽  
Yi Long ◽  
Yong Can Yu
Keyword(s):  
Control System ◽  
Packet Loss ◽  
Simulation Analysis ◽  
Network Control ◽  
Data Packet ◽  
Drilling Process ◽  
Control Performance ◽  
Network Control System ◽  
Control Effect ◽  
Network Delay

Automatic grouting is a very important part in the well drilling process. The stability of grouting system is one of the factors affecting the drilling accident. This paper presents a automatic grouting method based on network control system. In order to find out the influence on the control performance after using network in the system, paper sets up the system model with the simulation toolbox TrueTime-2.0 of MATLAB and separately studies the influence on the control effect by network delay and data packet loss according to the simulation result. The results prove that both the network delay and data packet loss all make great differences on the control performance of system, so we need to take appropriate strategies to reduce the influence in the actual designs.

Modeling and stabilization of a wireless network control system with packet loss and time delay

2012 ◽  
Vol 349 (7) ◽  
pp. 2420-2430 ◽  
Author(s):  
Jianjun Bai ◽  
Hongye Su ◽  
Jinfeng Gao ◽  
Tao Sun ◽  
Zhengguang Wu
Keyword(s):  
Control System ◽  
Time Delay ◽  
Wireless Network ◽  
Packet Loss ◽  
Network Control ◽  
Network Control System

Optimization Method for Wireless Control System Fault Detection

2013 ◽  
Vol 846-847 ◽  
pp. 782-785
Author(s):  
Shuang Ye
Keyword(s):  
Control System ◽  
Fault Detection ◽  
Wireless Network ◽  
Correlation Dimension ◽  
Optimization Method ◽  
Network Control ◽  
Network Control System ◽  
Feature Extraction Method ◽  
Extraction Algorithm ◽  
Network Transmission

Wireless network control system has high failure rate, and is difficult to be diagnosed. Wireless network transmission signal effectively reflect the failure categories. In order to effectively detect the wireless network control system fault, this paper presents a fault detection method of correlation dimensional nonlinear timing characteristics for wireless network transmission signal, which mainly improves the traditional correlation dimension extraction algorithm. The method processes and analyzes the collected transmission signal of four types wireless network control system in fault condition, and then extract fault feature through an improved correlation dimension algorithm. It improves the calculation accuracy of the correlation dimension with a standard deviation 15% -30% than that of the traditional algorithm, and it significantly enhances the clustering distribution characteristics, reflecting its superiority in fault detection. Fault detection results show that the improved feature extraction method for correlation dimension can effectively detect failure in wireless network control system, whose accuracy is improved by 21.4%, and has great practical value.

Research to the Development of Network-Anticipated Controlled System Based on Arbitrary Bounded Packet Loss

2014 ◽  
Vol 989-994 ◽  
pp. 3382-3385
Author(s):  
Guan Qun Liu
Keyword(s):  
Communication Network ◽  
Control System ◽  
Packet Loss ◽  
Rapid Development ◽  
Network Control ◽  
Network Control System ◽  
Controlled System ◽  
Loop Control ◽  
Closed Loop Control System ◽  
Loop Control System

In recent years, due to the rapid development of computer technology and the expanding of its controlling scale, people pay more and more attention to the study of network control system. Network control system is closed loop control system connecting the communication network connect sensor, controller, actuator etc. At the same time, the introduction of the communication network control system brings a lot of problems, such as data transmission delay, network packet loss and so on, which make the analysis of the network control system become very complicated. This paper analyzes background of the topic, significance and research status, and review the network control system.

SIMULATION OF ATTACK ON SYNCHRONIZATION NETWORK CONTROL SYSTEM

2020 ◽  
Vol 72 ◽  
pp. 35-47
Author(s):  
A. K. Kanaev ◽  
◽  
A. N. Gorbach ◽  
E. V. Oparin, ◽  
◽  
...  
Keyword(s):  
Control System ◽  
Network Control ◽  
Network Control System
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