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Asymptotic state estimation for linear systems with sensor and actuator faults

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Science China(Information Sciences) 2019年第11期62卷 106-120页

作者： Chun-Hua XIE Hui YANG Dianhui WANG Zhe LI School of Electrical and Automation Engineering East China Jiaotong University Key Laboratory of Advanced Control & Optimization of Jiangxi Province Department of Computer Science and Information Technology La Trobe University College of Electrical and Information Engineering Hunan University

This paper investigates the asymptotic state estimation problem for linear systems with sensor and actuator faults, where the faults are modeled via multiple modes. For the case of sensor faults, we first introduce a new notion of detectability, i.e., detectability of system against sensor faults. The notion helps to address the question of whether it is possible to asymptotically estimate the system state by using the control input and system output, irrespective of which mode the system is in and what values the fault signals are.A necessary and sufficient condition for the system to be detectable against sensor faults is given, and then two switched observers are proposed for asymptotic state estimation with the help of maximin strategy. For the system with ? fault modes, we provide the explicit form of the switched observer, which is based on a bank of ?(?+1)/2 Luenberger-like or sliding-mode observers. Furthermore, extensions to the case of sensor and actuator faults are further studied. Finally, a simulation example of a reduced-order aircraft system is provided to show the effectiveness of the proposed approaches.

关键词： asymptotic state estimation observer linear systems sensor faults actuator faults

A Coding-based Differentiation Approach for False Data Injection Attacks and sensor faults in Networked Control Systems

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A Coding-based Differentiation Approach for False Data Injec...

Generalized LMMSE Filtering with Out-of-Sequence Observations in Arbitrary Constant Delay

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作者： Jiahao Huang Yang Tang State Key Laboratory of Industrial Control Technology East China University of Science and Technology

Based on the coding scheme,this paper proposes a method to distinguish false data injection(FDI) attacks and sensor faults in networked control *** attacks and faults occur on physical devices and cyber layers respectively,the coding scheme is capable of amplifying attack-induced residuals,while keeping fault-induced residuals *** utilize the false positive and negative rates to evaluate the effectiveness of the coding scheme in achieving threat ***,we design a suitable threshold for the residue-based detector,and derive a sufficient condition for the coding matrix,such that the above two indicators can be guaranteed to be sufficiently ***,from the perspective of mathematical statistics,we analyze the possibility of an intelligent attacker cracking the coding scheme by eavesdropping the transmission *** this case,the time-varying coding matrix should be adopted to ensure its effectiveness in distinguishing attacks and ***,some numerical simulations are given to verify the theoretical results.

关键词： Threat discrimination cyber security attack detection false data injection attacks sensor faults

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Chinese Journal of Electronics 2019年第6期28卷 1217-1226页

作者： LEI Ming BAEHR Christophe JING Zhongliang School of Aeronautics and Astronautics Shanghai Jiao Tong University Météo-France National Meteorological Research Centre/CNRS

Focusing on the problem of state estimation in the presence of sensor faults and Out-of-sequence measurement(OOSM) observations synchronously, we derive a formulation of Linear minimum mean squared error(LMMSE) filter with the arbitrary time delay of OOSM, the generalization of the present work lies in simultaneous treatment of correlated faults together with OOSMs that arrive at an arbitrary delay in a linear-optimal manner. The approach is demonstrated in a numerical comparison.

关键词： Out-of-sequence measurement(OOSM) Linear minimum mean squared error(LMMSE) Arbitrary time delay sensor faults Fault-tolerant estimation Multisensor fusion

Suboptimal reliable guaranteed cost control for continuous-time systems with multi-criterion constraints

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2008年第8期9卷 1024-1033页

作者： Deng-feng ZHANG Hong-ye SU Jian CHU Zhi-quan WANG Institute of Advanced Process Control Zhejiang University Hangzhou 310027 China School of Automation Nanjing University of Science and Technology Nanjing 210094 China

The suboptimal reliable guaranteed cost control （RGCC） with multi-criterion constraints is investigated for a class of uncertain continuous-time systems with sensor faults. A fauk model in sensors, which considers outage or partial degradation of sensors, is adopted. The influence of the disturbance on the quadratic stability of the closed-loop systems is analyzed. The reliable state-feedback controller is developed by a linear matrix inequalities （LMIs） approach, to minimize the upper bound of a quadratic cost fimction under the conditions that all the closed-loop poles be placed in a specified disk, and that the prescribed level of H∞ disturbance attenuation and the upper bound constraints of control inputs＇ magnitudes be guaranteed. Thus, with the above muki-criterion constraints, the resulting closed-loop system can provide satisfactory stability, transient property, a disturbance rejection level and minimized quadratic cost performance despite possible sensor faults.

关键词： sensor faults Multi-criterion constraints Reliable guaranteed cost control (RGCC) Linear matrix inequality (LMI)

Distributed sensor fault diagnosis for a formation system with unknown constant time delays

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Science China(Information Sciences) 2018年第11期61卷 128-143页

作者： Donghua ZHOU Liguo QIN Xiao HE Rui YAN Ruiliang DENG College of Electrical Engineering and Automation Shandong University of Science and Technology Department of Automation TNList Tsinghua University

In this paper, a distributed velocity sensor fault diagnosis scheme is presented for a formation of a second-order multi-agent system with unknown constant communication time delays. An existing distributed proportion-derivation(DPD) formation control law is adopted and a delay-independent condition is proposed to guarantee the asymptotical formation stability of the formation system based on the Nyquist stability criterion. Then a distributed fault diagnosis scheme is developed. In each agent, a distributed fault detection residual generator(DFDRG) and a bank of distributed fault isolation residual generators(DFIRGs) are designed based on the closed-loop model of the whole system. Each DFIRG is built up on the basis of a reduced-order unknown input observer(UIO) which is robust to the fault of one neighboring agent. According to the robust relationship between DFIRGs and faults, distributed fault isolation can be achieved. Conditions are presented to guarantee that each agent is able to diagnose faults of itself and its neighbors despite the disturbance of time delays. Finally, outdoor experimental results illustrate the effectiveness of the proposed schemes.

关键词： formation systems distributed fault diagnosis sensor faults time delays quadrotor unmanned helicopters

An Insight Survey on sensor Errors and Fault Detection Techniques in Smart Spaces

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Computer Modeling in Engineering & Sciences 2024年第3期138卷 2029-2059页

作者： Sheetal Sharma Kamali Gupta DeepaliGupta Shalli Rani Gaurav Dhiman Chitkara University Institute of Engineering and Technology Chitkara UniversityPunjab140401India PG Department of Information Technology Goswami Ganesh Dutta Sanatan Dharma CollegeChandigarh160030India Department of Computer Science Government Bikram College of CommercePatialaIndia Department of Electrical and Computer Engineering Lebanese American UniversityByblosLebanon University Centre for Research and Development Department of Computer Science and EngineeringChandigarh UniversityMohali140413India Department of Computer Science and Engineering Graphic Era Deemed to be UniversityDehradun248002India Division of Research and Development Lovely Professional UniversityPunjab144001India

The widespread adoption of the Internet of Things (IoT) has transformed various sectors globally, making themmore intelligent and connected. However, this advancement comes with challenges related to the effectiveness ofIoT devices. These devices, present in offices, homes, industries, and more, need constant monitoring to ensuretheir proper functionality. The success of smart systems relies on their seamless operation and ability to handlefaults. sensors, crucial components of these systems, gather data and contribute to their functionality. Therefore,sensor faults can compromise the system’s reliability and undermine the trustworthiness of smart *** address these concerns, various techniques and algorithms can be employed to enhance the performance ofIoT devices through effective fault detection. This paper conducted a thorough review of the existing literature andconducted a detailed *** analysis effectively links sensor errors with a prominent fault detection techniquecapable of addressing them. This study is innovative because it paves theway for future researchers to explore errorsthat have not yet been tackled by existing fault detection methods. Significant, the paper, also highlights essentialfactors for selecting and adopting fault detection techniques, as well as the characteristics of datasets and theircorresponding recommended techniques. Additionally, the paper presents amethodical overview of fault detectiontechniques employed in smart devices, including themetrics used for evaluation. Furthermore, the paper examinesthe body of academic work related to sensor faults and fault detection techniques within the domain. This reflectsthe growing inclination and scholarly attention of researchers and academicians toward strategies for fault detectionwithin the realm of the Internet of Things.

关键词： Error fault detection techniques sensor faults outliers Internet of Things

Early sensor Fault Detection Based on PCA and Clustering Analysis

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Journal of Harbin Institute of Technology(New Series) 2014年第6期21卷 113-120页

作者： Xue-Bing Gong Ri-Xin Wang Min-Qiang Xu Deep Space Exploration Research Center Harbin Institute of Technology

This paper proposes a novel scoring index for the early sensor fault detection in order to make full use of massive archived spacecraft telemetry *** early detection of sensor faults is made by using the index constructed by the K-means algorithm and PCA *** sensor fault detection includes the learning phase and monitoring *** amplitude of sensor fault has been always increasing when the performance of sensors deteriorates during a *** proposed index can detect the smaller sensor faults than the squared prediction error( SPE) index which means it can discover the sensor faults earlier than the *** simulation results demonstrate the effectiveness and feasibility of the proposed index which can decrease the check-limit as much as 40% than SPE in the same magnitude of bias sensor fault.

关键词： early fault detection PCA K-means algorithm SPE sensor faults

Fault Tolerant Synchronization for a General Complex DynamicalNetwork with Random Delay

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Journal of Harbin Institute of Technology(New Series) 2017年第1期24卷 51-56页

作者： Chao Wang Chunxia Fan Lunsai Gong College of Automation Nanjing University of Postsand TelecommunicationsNanging 210023China

A fault tolerant synchronization strategy is proposed to synchronize a complex network with random time delays and sensor faults. Random time delays over the network transmission are described by using Markov chains. Based on the Lyapunov stability theory and stochastic analysis, several passive fault tolerant synchronization criteria are derived,which can be described in the form of linear matrix inequalities. Finally,a numerical simulation example is carried out and the results show the validity of the proposed fault tolerant synchronization controller.

关键词： complex dynamical network fault tolerant control synchronization random delay sensor faults

State and sensor fault interval estimations for discrete-time systems 36

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State and sensor fault interval estimations for discrete-tim...