Article
Automation & Control Systems
Qi Zhu, Shun Jiang, Feng Pan
Summary: This article investigates the fault detection problem in finite-frequency domain for nonlinear networked systems under stochastic cyber-attacks. An adaptive event-triggered scheme is introduced to mitigate network transmission burden. A unified measurement model is proposed to consider both randomly occurring cyber-attacks and transmission delays. The fault detection problem is converted into an auxiliary H-/H infinity filtering problem, and sufficient conditions for the existence of the desired fault detection filter are obtained through stochastic analysis.
INTERNATIONAL JOURNAL OF ADAPTIVE CONTROL AND SIGNAL PROCESSING
(2022)
Article
Automation & Control Systems
Yue Long, Ju H. Park, Dan Ye
Summary: This paper proposes an asynchronous fault detection and isolation scheme for MJS with actuator failures in networked environment. By introducing binary-valued Bernoulli distributed sequences and stochastic H_ index in finite frequency domain, the scheme ensures the existence of desired filters and achieves detection of actuator failures. Each FDI filter in the scheme is only sensitive to one possible actuator fault and decoupled from others, demonstrating the effectiveness of the proposed theoretical results through an application example.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2021)
Article
Automation & Control Systems
Yanping Wang, Xiaoming Chen, Haixiao Guo
Summary: This paper proposes an event-triggered H-/L-infinity fault detection observer design method for discrete-time Lipschitz nonlinear networked control systems in finite-frequency domain, which can reduce data transmission and achieve better FD performance. The worst-case fault sensitivity performance is measured using the finite-frequency H-index, and disturbance robustness performance is measured using the L(infinity) norm. The FDO design conditions are derived and transformed using a set of linear matrix inequalities.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2022)
Article
Automation & Control Systems
Rong Zhao, Lu Liu, Gang Feng
Summary: This article focuses on the design of H-/H-infinity memory fault detection filters in the finite frequency domain for discrete-time systems with polytopic uncertainties. By using historical information and parameter-dependent Lyapunov functions, better performance of the fault detection filter is obtained. Sufficient conditions for the fault detection filtering design are established by solving an optimization problem in the form of a set of linear matrix inequalities (LMIs), showing the effectiveness and advantages of the proposed approach through three examples.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Automation & Control Systems
Aadil Sarwar Khan, Abdul Qayyum Khan, Naeem Iqbal, Ghulam Mustafa, Muhammad Asim Abbasi, Atif Mahmood
Summary: This paper presents a novel directional observer-based fault detection and isolation scheme for second-order networked control systems. The scheme utilizes a directional unknown input observer (UIO) to solve the problem of distributed fault detection and isolation (FDI). Two design schemes with global and partial/local network models are proposed. Thresholds for the schemes in a noisy environment are computed. The significant feature of the proposed schemes is achieving fault detection and isolation in a single step using a single observer. The schemes are validated with power system models and compared with existing FDI schemes, demonstrating their effectiveness in terms of computational requirements.
Article
Automation & Control Systems
Dhanya Velmurugan, Arunkumar Arumugam, Karthick Arumugam
Summary: The paper examines the strategy of observer-based nonfragile control and fault-detection over finite-time horizon for a class of uncertain switched nonlinear networked control systems (NNCSs) with time varying delays. An observer-based fault detection control is designed for the NNCSs, and the fault detection problem is transformed into an H infinity attenuation problem. Sufficient conditions, in the form of linear matrix inequalities (LMIs), are obtained using multiple Lyapunov functions and average dwell time (ADT) approach to ensure the finite-time boundedness (FTB) criterion of the resulting switched NNCSs with a specified disturbance attenuation. Numerical examples are provided to demonstrate the effectiveness of the proposed technique.
OPTIMAL CONTROL APPLICATIONS & METHODS
(2023)
Article
Engineering, Mechanical
He Li, Jie Li, Chao Deng, Yuanxin Li
Summary: In this paper, the problem of simultaneous fault detection and reliable control (SFDC) for fractional-order linear systems in the finite frequency domain is investigated. A dynamic observer is designed for fault detection and state estimation. The proposed dynamic-observer-based controller achieves better H-8 performance. The design conditions for the detector and controller are derived based on the generalized KYP lemma to achieve H- fault sensitivity performance and H-8 interference attenuation performance in the limited frequency domain, resulting in improved disturbance attenuation and fault sensitivity performance. Simulation results confirm the effectiveness of the designed method.
Article
Computer Science, Information Systems
Weiwei Sun, Zidong Wang, Xinyu Lv, Fuad E. Alsaadi, Hongjian Liu
Summary: This paper investigates the design problem of H-infinity observer for discrete-time Hamiltonian systems subject to missing measurement and sensor saturations governed by Bernoulli distributed random variables. The aim is to design an observer that ensures the exponentially mean-square stability of the error dynamics in state estimation with prescribed H-infinity performance. By utilizing Lyapunov function and the properties of Hamiltonian system, sufficient conditions are derived for the existence of the desired observer. Moreover, observer gains are designed based on certain matrix inequalities. An illustrative example is provided to demonstrate the effectiveness of the proposed observer design scheme.
INFORMATION SCIENCES
(2022)
Article
Automation & Control Systems
Shaoping Wang, Jun Zhou, Zhaoxia Duan
Summary: This paper presents a modified observer for fault detection in wind turbine transmission systems (WTTS) under actuator stuck faults and wind disturbances. The observer, based on finite frequency (FF) performance indices, outperforms previously proposed observers. By utilizing the generalized Kalman-Yakubovich-Popov (GKYP) lemma and Lyapunov theory, the FF indices are transformed into linear matrix inequalities (LMIs) and the corresponding FF modified observer is parameterized through convex optimization with LMI constraints. One notable advantage of the modified observer is its ability to simultaneously handle fault and disturbance signals in different FF domains, making the residual system sensitive to actuator faults while robust against external wind disturbances. Simulation results demonstrate the superior fault detection performance of the proposed design method compared to frequency observers.
ASIAN JOURNAL OF CONTROL
(2023)
Article
Automation & Control Systems
Peng Cheng, Chenxiao Cai
Summary: This paper introduces a novel approach for designing a finite frequency fault detection filter based on the event-triggered scheme for discrete-time Markovian jump systems with Lipschitz functions, time-varying delays, and packet dropouts. The proposed method is proven to be robust to unknown disturbances and sensitive to finite frequency faults through the use of new lemmas and mathematical techniques. The validity and superiority of the proposed theory are demonstrated through the application of Chua's circuit system.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Engineering, Electrical & Electronic
Abdelrahman Khalil, Khaled F. Aljanaideh, Mohammad Al Janaideh
Summary: This paper investigates actuator fault detection in linear systems with a number of actuators using transmissibility operators, applied to both an analytical model and an experimental setup.
IEEE SENSORS JOURNAL
(2022)
Article
Automation & Control Systems
Siwei Qiao, Qingsheng Yang, Jie Wu, Xisheng Zhan, Huaicheng Yan
Summary: This paper solves the stability problem of networked time-delay systems by using frequency-domain analysis. The quality of communication network is affected by bandwidth, noise, and packet dropouts. The main techniques used are spectral decomposition and frequency-domain analysis. By utilizing these techniques, the minimum signal-to-noise ratio expression for stabilizing the networked time-delay systems is obtained. Furthermore, it is shown that the minimum system stability value depends on the constraints of the communication channel, the position of unstable poles, and the non-minimum phase zeros of the given model. Additionally, the acquired result highlights the connection between the status of the researched system, communication channel parameters, and the structural property of the considered model. Simulation examples are provided to validate the final result.
INTERNATIONAL JOURNAL OF CONTROL AUTOMATION AND SYSTEMS
(2023)
Article
Mathematics, Applied
Shifang Dai, Lijuan Zha, Jinliang Liu, Xiangpeng Xie, Engang Tian
Summary: This paper proposes a fault detection filter (FDF) for detecting random fault signals in networked systems, considering network delay and deception attacks. The stability of the proposed fault detection system is guaranteed using Lyapunov stability theory and linear matrix inequality (LMI) techniques, with explicit expressions for the corresponding coefficient matrices of the FDF. Two simulation examples demonstrate the effectiveness and practicality of the designed FDF.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Computer Science, Artificial Intelligence
Rong Zhao, Lu Liu, Gang Feng
Summary: This article deals with the finite-frequency H-/H-infinity memory fault detection filtering problem for discrete-time Takagi-Sugeno fuzzy affine systems with norm-bounded uncertainties. It focuses on designing a piecewise affine memory filter using system historical information to ensure the resulting closed-loop filtering error system is asymptotically stable with the prescribed finite-frequency H-/H-infinity performance.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2022)
Article
Computer Science, Information Systems
Zhansheng He, Jun Shen
Summary: This paper explores the consensus of positive networked systems with actuator faults by establishing topology and applying positive system theory. State feedback gains are derived using Algebraic Riccati Inequalities and the performance criteria are optimized using Genetic Algorithm.
