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Mine-Hoist Active Fault Tolerant Control System and Strategy 被引量:2
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作者 WANGZhi-jie WANGYao-cai MENGJiang ZHAOPeng-cheng CHANGYan-wei 《Journal of China University of Mining and Technology》 EI 2005年第2期96-99,共4页
Based on fault diagnosis and fault tolerant technologies, the mine-hoist active fault-tolerant control system (MAFCS) is presented with corresponding strategies,, which includes the fault diagnosis module (FDM), the d... Based on fault diagnosis and fault tolerant technologies, the mine-hoist active fault-tolerant control system (MAFCS) is presented with corresponding strategies,, which includes the fault diagnosis module (FDM), the dynamic library (DL) and the fault-tolerant control module (FCM). When a fault is judged from some sensor by FDM, FCM reconfigure the state of MAFCS by calling the parameters from all sub libraries in DL, in order to ensure the reliabil- ity and safety of mine hoist. The simulating result shows that, MAFCS is of certain intelligence, which can adopt the corresponding control strategies according to different fault modes, even when there are quite difference between the real data and the prior fault modes. 展开更多
关键词 mine hoist reliability fault diagnosis active fault-tolerant control system
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Fault Tolerant Control for Networked Control Systems with Packet Loss and Time Delay 被引量:5
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作者 Ming-Yue Zhao He-Ping Liu +1 位作者 Zhi-Jun Li De-Hui Sun 《International Journal of Automation and computing》 EI 2011年第2期244-253,共10页
In this paper,a fault tolerant control with the consideration of actuator fault for a networked control system (NCS) with packet loss is addressed.The NCS with data packet loss can be described as a switched system ... In this paper,a fault tolerant control with the consideration of actuator fault for a networked control system (NCS) with packet loss is addressed.The NCS with data packet loss can be described as a switched system model.Packet loss dependent Lyapunov function is used and a fault tolerant controller is proposed respectively for arbitrary packet loss process and Markovian packet loss process.Considering a controlled plant with external energy-bounded disturbance,a robust H ∞ fault tolerant controller is designed for the NCS.These results are also expanded to the NCS with packet loss and networked-induced delay.Numerical examples are given to illustrate the effectiveness of the proposed design method. 展开更多
关键词 fault tolerant control networked control system (NCS) packet loss actuator fault time delay.
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Fault-Tolerant Control Research for Networked Control System under Communication Constraints 被引量:11
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作者 HUO Zhi-Hong FANG Hua-Jing 《自动化学报》 EI CSCD 北大核心 2006年第5期659-666,共8页
Implementing a control system over a communication network induces inevitable time delays that may degrade performance and even cause instability. One of the most effective ways to reduce the negative effect of delays... Implementing a control system over a communication network induces inevitable time delays that may degrade performance and even cause instability. One of the most effective ways to reduce the negative effect of delays on the performance of networked control system (NCS) is to reduce network traffic. In this paper, adjustable deadbands are explored as a solution to reduce network traffic in NCS. A method of fault-tolerant control of networked control system is presented, which takes into account system response as well as network traffic. The integrity design for a kind of NCS with sensor failures and actuator failures is analyzed based on robust fault-tolerant control theory and information scheduling. After detailed theoretical analysis, the paper also provides the simulation results, which further validate the proposed scheme. 展开更多
关键词 Networked control system (NCS) deadbands fault-tolerant control (FTC) integrity design time delay
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Research on robust fault-tolerant control for networked control system with packet dropout 被引量:50
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作者 Huo Zhihong Fang Huajing 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2007年第1期76-82,共7页
A kind of networked control system with network-induced delay and packet dropout, modeled on asynchronous dynamical systems was tested, and the integrity design of the networked control system with sensors failures an... A kind of networked control system with network-induced delay and packet dropout, modeled on asynchronous dynamical systems was tested, and the integrity design of the networked control system with sensors failures and actuators failures was analyzed using hybrid systems technique based on the robust fault-tolerant control theory. The parametric expression of controller is given based on the feasible solution of linear matrix inequality. The simulation results are provided on the basis of detailed theoretical analysis, which further demonstrate the validity of the proposed schema. 展开更多
关键词 Networked control system (NCS) fault-tolerant control (FTC) Asynchronous dynamical systems (ADS) Integrity design Packet dropout Time delay
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Research on fault-tolerant control of networked control systems based on information scheduling 被引量:5
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作者 Huo Zhihong Zhang Zhixue Fang Huajing 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2008年第5期1024-1028,共5页
A kind of networked control system is studied; the networked control system with noise disturbance is modeled based on information scheduling and control co-design. Augmented state matrix analysis method is introduced... A kind of networked control system is studied; the networked control system with noise disturbance is modeled based on information scheduling and control co-design. Augmented state matrix analysis method is introduced, and robust fault-tolerant control problem of networked control systems with noise disturbance under actuator failures is studied. The parametric expression of the controller under actuator failures is given. Furthermore, the result is analyzed by simulation tests, which not only satisfies the networked control systems stability, but also decreases the data information number in network channel and makes full use of the network resources. 展开更多
关键词 networked control systems fault-tolerant control information scheduling linear matrix inequality.
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Guaranteed Cost Active Fault-tolerant Control of Networked Control System with Packet Dropout and Transmission Delay 被引量:5
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作者 Xiao-Yuan Luo Mei-Jie Shang +1 位作者 Cai-Lian Chen Xin-Ping Guan 《International Journal of Automation and computing》 EI 2010年第4期509-515,共7页
The problem of guaranteed cost active fault-tolerant controller (AFTC) design for networked control systems (NCSs) with both packet dropout and transmission delay is studied in this paper. Considering the packet d... The problem of guaranteed cost active fault-tolerant controller (AFTC) design for networked control systems (NCSs) with both packet dropout and transmission delay is studied in this paper. Considering the packet dropout and transmission delay, a piecewise constant controller is adopted. With a guaranteed cost function, optimal controllers whose number is equal to the number of actuators are designed, and the design process is formulated as a convex optimal problem that can be solved by existing software. The control strategy is proposed as follows: when actuator failures appear, the fault detection and isolation unit sends out the information to the controller choosing strategy, and then the optimal stabilizing controller with the smallest guaranteed cost value is chosen. Two illustrative examples are given to demonstrate the effectiveness of the proposed approach. By comparing with the existing methods, it can be seen that our method has a better performance. 展开更多
关键词 Networked control system (NCS) packet dropout transmission delay active fault-tolerant control (AFTC) guaranteed cost controller.
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Fault tolerant control of electric pitch control system based on single current detection
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作者 李宏伟 付勃 +2 位作者 董海鹰 杨立霞 王睿敏 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2016年第1期63-70,共8页
In view of the current sensors failure in electric pitch system,a variable universe fuzzy fault tolerant control method of electric pitch control system based on single current detection is proposed.When there is sing... In view of the current sensors failure in electric pitch system,a variable universe fuzzy fault tolerant control method of electric pitch control system based on single current detection is proposed.When there is single or two-current sensor fault occurs,based on the proposed method the missing current information can be reconstructed by using direct current(DC)bus current sensor and the three-phase current can be updated in time within any two adjacent sampling periods,so as to ensure stability of the closed-loop system.And then the switchover and fault tolerant control of fault current sensor would be accomplished by fault diagnosis method based on adaptive threshold judgment.For the reconstructed signal error caused by the modulation method and the main control target of electric pitch system,a variable universe fuzzy control method is used in the speed loop,which can improve the anti-disturbance ability to load variation,and the robustness of fault tolerance system.The results show that the fault tolerant control method makes the variable pitch control system still has ideal control characteristics in case of sensor failure although part of the system performance is lost,thus the correctness of the proposed method is verified. 展开更多
关键词 electric pitch control fault tolerant control variable universe fuzzy control single current detection
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Reliability Analysis of Controller Area Network Based Systems—A Review 被引量:2
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作者 Gerardine Immaculate Mary Zachariah C. Alex Lawrence Jenkins 《International Journal of Communications, Network and System Sciences》 2013年第4期155-166,共12页
This paper reviews the research work done on the Reliability Analysis of Controller Area Network (CAN) based systems. During the last couple of decades, real-time researchers have extended schedulability analysis to a... This paper reviews the research work done on the Reliability Analysis of Controller Area Network (CAN) based systems. During the last couple of decades, real-time researchers have extended schedulability analysis to a mature technique which for nontrivial systems can be used to determine whether a set of tasks executing on a single CPU or in a distributed system will meet their deadlines or not [1-3]. The main focus of the real-time research community is on hard real-time systems, and the essence of analyzing such systems is to investigate if deadlines are met in a worst case scenario. Whether this worst case actually will occur during execution, or if it is likely to occur, is not normally considered. Reliability modeling, on the other hand, involves study of fault models, characterization of distribution functions of faults and development of methods and tools for composing these distributions and models in estimating an overall reliability figure for the system [4]. This paper presents the research work done on reliability analysis developed with a focus on Controller-Area-Network-based automotive systems. 展开更多
关键词 reliability Analysis of controlLER Area Network BASED systemS fault-TOLERANT CAN BASED systemS
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Reliability Growth Modeling and Optimal Release Policy Under Fuzzy Environment of an N-version Programming System Incorporating the Effect of Fault Removal Efficiency
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作者 P.K.Kapur Anshu Gupta P.C.Jha 《International Journal of Automation and computing》 EI 2007年第4期369-379,共11页
Failure of a safety critical system can lead to big losses. Very high software reliability is required for automating the working of systems such as aircraft controller and nuclear reactor controller software systems.... Failure of a safety critical system can lead to big losses. Very high software reliability is required for automating the working of systems such as aircraft controller and nuclear reactor controller software systems. Fault-tolerant softwares are used to increase the overall reliability of software systems. Fault tolerance is achieved using the fault-tolerant schemes such as fault recovery (recovery block scheme), fault masking (N-version programming (NVP)) or a combination of both (Hybrid scheme). These softwares incorporate the ability of system survival even on a failure. Many researchers in the field of software engineering have done excellent work to study the reliability of fault-tolerant systems. Most of them consider the stable system reliability. Few attempts have been made in reliability modeling to study the reliability growth for an NVP system. Recently, a model was proposed to analyze the reliability growth of an NVP system incorporating the effect of fault removal efficiency. In this model, a proportion of the number of failures is assumed to be a measure of fault generation while an appropriate measure of fault generation should be the proportion of faults removed. In this paper, we first propose a testing efficiency model incorporating the effect of imperfect fault debugging and error generation. Using this model, a software reliability growth model (SRGM) is developed to model the reliability growth of an NVP system. The proposed model is useful for practical applications and can provide the measures of debugging effectiveness and additional workload or skilled professional required. It is very important for a developer to determine the optimal release time of the software to improve its performance in terms of competition and cost. In this paper, we also formulate the optimal software release time problem for a 3VP system under fuzzy environment and discuss a the fuzzy optimization technique for solving the problem with a numerical illustration. 展开更多
关键词 fault tolerant software reliability growth model release time fuzzy optimization.
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Research on Fault-Tolerant Control System for Space Modular Manipulator System
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作者 叶平 孙汉旭 +1 位作者 贾庆轩 王新升 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2006年第3期260-265,共6页
This paper studies a fault-tolerant control system for a space modular manipulator system mounted on space station or other spacecrafts such as satellites, located in low earth orbit. Design technologies for tradition... This paper studies a fault-tolerant control system for a space modular manipulator system mounted on space station or other spacecrafts such as satellites, located in low earth orbit. Design technologies for traditional industrial manipulator systems cannot be directly used to the space ones due to the special space environment and compactness. Considering the extremely tight constraints on mass, power consumption, volume, cost and "design-to-orbit" schedules, the fault-tolerant control system is developed mainly based on commercial-off-the-shaft components. The features of the hardware and software of the fault-tolerant control system are presented. The performance specifications are also discussed. Because many space proven design technologies and experiences are adopted, the fault-tolerant control system is characterized by high reliability and practicability. 展开更多
关键词 fault-tolerant control system space modular manipulator system commercial-off-the-shaft(COTS)
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Fault-tolerant Control Systems-An Introductory Overview 被引量:30
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作者 JinJiang 《自动化学报》 EI CSCD 北大核心 2005年第1期161-174,共14页
This paper presents an introductory overview on the development of fault-tolerant control systems. For this reason, the paper is written in a tutorial fashion to summarize some of the important results in this subject... This paper presents an introductory overview on the development of fault-tolerant control systems. For this reason, the paper is written in a tutorial fashion to summarize some of the important results in this subject area deliberately without going into details in any of them. However, key references are provided from which interested readers can obtain more detailed information on a particular subject. It is necessary to mention that, throughout this paper, no efforts were made to provide an exhaustive coverage on the subject matter. In fact, it is far from it. The paper merely represents the view and experience of its author. It can very well be that some important issues or topics were left out unintentionally. If that is the case, the author sincerely apologizes in advance.After a brief account of fault-tolerant control systems, particularly on the original motivations, and the concept of redundancies, the paper reviews the development of fault-tolerant control systems with highlights to several important issues from a historical perspective. The general approaches to fault-tolerant control has been divided into passive, active, and hybrid approaches. The analysis techniques for active fault-tolerant control systems are also discussed. Practical applications of faulttolerant control are highlighted from a practical and industrial perspective. Finally, some critical issues in this area are discussed as open problems for future research/development in this emerging field. 展开更多
关键词 容错控制系统 冗余性 临界安全系统 自动控制系统
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Fault Estimation and Accommodation for Networked Control Systems with Transfer Delay 被引量:24
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作者 MAO Ze-Hui JIANG Bin 《自动化学报》 EI CSCD 北大核心 2007年第7期738-743,共6页
在这份报纸,差错评价和差错的一个方法为有转移延期和进程噪音的联网的控制系统(NCS ) 的容忍的控制被介绍。首先,联网的控制系统作为有转移的分离时间的系统推迟的 multiple-input-multiple-output (MIMO ) 被建模,处理噪音,并且... 在这份报纸,差错评价和差错的一个方法为有转移延期和进程噪音的联网的控制系统(NCS ) 的容忍的控制被介绍。首先,联网的控制系统作为有转移的分离时间的系统推迟的 multiple-input-multiple-output (MIMO ) 被建模,处理噪音,并且为无常建模。在这个模型下面并且在一些条件下面,一个差错评价方法被建议估计系统差错。根据差错评价和滑动模式控制理论的信息,一个差错容忍的控制器被设计恢复系统性能。最后,模拟结果被用来验证方法的效率。 展开更多
关键词 网络控制系统 迟滞转移 容错估计 容错控制 不确定性模型 滑动模型控制
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Fault Tolerant Control Scheme Design for Formation Flight Control System of Multiple Unmanned Aerial Vehicles
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作者 Qian Moshu Xiong Ke 《Transactions of Nanjing University of Aeronautics and Astronautics》 EI CSCD 2018年第4期693-701,共9页
The command tracking problem of formation flight control system(FFCS)for multiple unmanned aerial vehicles(UAVs)with sensor faults is discussed.And the objective of the addressed control problem is to design a robust ... The command tracking problem of formation flight control system(FFCS)for multiple unmanned aerial vehicles(UAVs)with sensor faults is discussed.And the objective of the addressed control problem is to design a robust fault tolerant tracking controller such that,for the disturbances and sensor faults,the closed-loop system is asymptotically stable with a given disturbance attenuation level.A robust fault tolerant tracking control scheme,combining an observer with H∞ performance,is proposed.Furthermore,it is proved that the designed controller can guarantee asymptotic stability of FFCS despite sensor faults.Finally,a simulation of two UAV formations is employed to demonstrate the effectiveness of the proposed approach. 展开更多
关键词 formation control fault tolerant control(FTC) unmanned aerial vehicle(UAV) robust control
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Enhancing Reliability via Checkpointing in Cloud Computing Systems 被引量:4
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作者 Ao Zhou Qibo Sun Jinglin Li 《China Communications》 SCIE CSCD 2017年第7期108-117,共10页
Cloud computing is becoming an important solution for providing scalable computing resources via Internet. Because there are tens of thousands of nodes in data center, the probability of server failures is nontrivial.... Cloud computing is becoming an important solution for providing scalable computing resources via Internet. Because there are tens of thousands of nodes in data center, the probability of server failures is nontrivial. Therefore, it is a critical challenge to guarantee the service reliability. Fault-tolerance strategies, such as checkpoint, are commonly employed. Because of the failure of the edge switches, the checkpoint image may become inaccessible. Therefore, current checkpoint-based fault tolerance method cannot achieve the best effect. In this paper, we propose an optimal checkpoint method with edge switch failure-aware. The edge switch failure-aware checkpoint method includes two algorithms. The first algorithm employs the data center topology and communication characteristic for checkpoint image storage server selection. The second algorithm employs the checkpoint image storage characteristic as well as the data center topology to select the recovery server. Simulation experiments are performed to demonstrate the effectiveness of the proposed method. 展开更多
关键词 cloud computing cloud service reliability fault tolerance data center network
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Fault-tolerant control systems design via subdivision of parameter region
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作者 Xiaozheng JIN Guanghong YANG 《控制理论与应用(英文版)》 EI 2009年第2期127-133,共7页
This paper presents a linear matrix inequality (LMI) approach to solve the fault-tolerant control (FTC) problem of actuator faults. The range of actuator faults is considered as a parameter region and subdivided i... This paper presents a linear matrix inequality (LMI) approach to solve the fault-tolerant control (FTC) problem of actuator faults. The range of actuator faults is considered as a parameter region and subdivided into several subregions to achieve a certain desired performance specification. Based on the integral quadratic constraint (IQC) approach, a passive fault-tolerant controller for the whole fault region and multiple fault-tolerant controllers for each fault subregion are designed for guaranteeing stability and improving performance of the FTC system, respectively. According to the estimation of parameters by FDI process, the corresponding subregion controller is chosen for the stability and optimal performance of closed-loop systems when the fault occurs. The case of incorrect estimation is also considered by comparing the performance index between the switched controller and the passive fault-tolerant controller. The proposed design technique is finally evaluated in the light of a simulation example. 展开更多
关键词 fault-tolerant control Actuator failure Switching control Parameter region Optimal performance
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Fault-tolerant software based on consensus recovery block and analysis of its reliability
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作者 张宇 洪炳熔 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 1999年第4期51-55,共5页
When computers are used to manage life critical tasks,software errors due to inadequate or incomplete testing can not be tolerated, and therefore a model is built on the basis of Consensus Recovery Block (CRB) and a... When computers are used to manage life critical tasks,software errors due to inadequate or incomplete testing can not be tolerated, and therefore a model is built on the basis of Consensus Recovery Block (CRB) and an event tree is used for analysis of its reliability and an example is given to verify its feasibility method and compare it with N Version programming. 展开更多
关键词 CONSENSUS RECOVERY BLOCK fault tolerant SOFTWARE reliability
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HYBRID REDUNDANCY APPROACH TO INCREASE THE RELIABILITY OF FPGA BASED SPEED CONTROLLER CORE FOR HIGH SPEED TRAIN
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作者 Omid Akbari Galashi Karim Mohammadi Reza Omidi Gosheblagh 《Journal of Electronics(China)》 2014年第3期256-266,共11页
With the progress of the railway technology, the railway transportation is becoming more efficient, intelligent and faster. High speed trains, as a major part of the railway transportation, are engaged with passenger&... With the progress of the railway technology, the railway transportation is becoming more efficient, intelligent and faster. High speed trains, as a major part of the railway transportation, are engaged with passenger's safety, and therefore the reliability issue is very important in such vital systems. In this paper, a dependable speed controller core based on FPGA has been developed for high speed trains. To improve the reliability and mitigate single upset faults on basic speed controller, this paper proposes a new effective method which is based on hardware redundancy. In the proposed Hybrid Dual Duplex Redundancy(HDDR) method, the original controller is quadruplicated and correct values are voted through the comparator and error detection unit. We have analyzed the proposed system with Reliability, Availability, Mean time to failure and Security(RAMS) theory in order to evaluate the effectiveness of proposed scheme. Theoretical analysis shows that the Mean Time To Failure(MTTF) of the proposed system is 2.5 times better than the traditional Triple Modular Redundancy(TMR). Furthermore, the fault injection experimental results reveal that the capability of tolerating Single Event Upsets(SEUs) in the proposed method increases up to 7.5 times with respect to a regular speed controller. 展开更多
关键词 Field Programmable Gate Arrays (FPGAs) Hybrid Dual Duplex Redundancy (HDDR) fault tolerant system reliability High speed railway
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Increasing of Reliability of FPGA Implemented Microcontroller Using the Error Self Correcting Techniques
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作者 Branislav Dobrucky Peter Sindler Jozef Cuntala Anna Kondelova 《通讯和计算机(中英文版)》 2015年第5期219-227,共9页
关键词 可靠性增长 单片机系统 FPGA 自校正技术 现场可编程门阵列 误差 机采 算术逻辑单元
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On the Performability of Hierarchical Wireless Networked Control Systems
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作者 Esraa A. Makled Hassan H. Halawa +2 位作者 Ramez M. Daoud Hassanein H. Amer Tarek K. Refaat 《Intelligent Control and Automation》 2015年第2期126-133,共8页
This paper investigates the performability of hierarchical Wireless Networked Control Systems (WNCS). The WNCS studied can operate in two modes: passive supervisor and active supervisor. It is first shown that the Mar... This paper investigates the performability of hierarchical Wireless Networked Control Systems (WNCS). The WNCS studied can operate in two modes: passive supervisor and active supervisor. It is first shown that the Markov models for both modes are identical. Performability models are then developed and a case study shows how to use these models to help make design decisions. More specifically, it is observed that the performability of a passive supervisor system increases in time while that of an active supervisor system decreases in time. 展开更多
关键词 PERFORMABILITY CTMC fault-tolerance WIRELESS NETWORKED control systems HIERARCHICAL Networks IEEE 802.11
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Reliability Analysis of Sensor Networks 被引量:2
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作者 金岩 杨孝宗 王玲 《Journal of Donghua University(English Edition)》 EI CAS 2005年第3期28-32,共5页
To Integrate the capacity of sensing, communication, computing, and actuating, one of the compelling technological advances of these years has been the appearance of distributed wireless sensor network (DSN) for infor... To Integrate the capacity of sensing, communication, computing, and actuating, one of the compelling technological advances of these years has been the appearance of distributed wireless sensor network (DSN) for information gathering tasks. In order to save the energy, multi-hop routing between the sensor nodes and the sink node is necessary because of limited resource. In addition, the unpredictable conditional factors make the sensor nodes unreliable. In this paper, the reliability of routing designed for sensor network and some dependability issues of DSN, such as MTTF (mean time to failure) and the probability of connectivity between the sensor nodes and the sink node are analyzed. Unfortunately, we could not obtain the accurate result for the arbitrary network topology, which is #P-hard problem. And the reliability analysis of restricted topologies clustering-based is given. The method proposed in this paper will show us a constructive idea about how to place energy-constrained sensor nodes in the network efficiently from the prospective of reliability. 展开更多
关键词 distributed sensor network DEPENDABILITY fault tolerant CLUSTERING reliability MTTF
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