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Article
Automation & Control Systems
Jianping Cai et al.
Summary: In this article, a decentralized adaptive control scheme is proposed based on backstepping techniques for uncertain interconnected systems with modeling errors and interactions. Unlike existing results, the functions bounding modeling errors and interactions are allowed to depend on all the states of the interconnected system, without the requirement of meeting the triangular condition. It is demonstrated that the proposed scheme can ensure bounded signals in the closed-loop system, which is verified by simulation studies.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2023)
Article
Automation & Control Systems
Wanli Wang et al.
Summary: This article considers adaptive output feedback tracking for a class of nonlinear systems with uncertain parameters, sensor uncertainties, and external disturbances. A state observer and an adaptive controller are constructed based on gain scaling technique to compensate for the effects of sensor uncertainties. The proposed scheme ensures that all states of the closed-loop system are bounded and the tracking error converges to an arbitrarily small residual set.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Automation & Control Systems
Xinpeng Fang et al.
Summary: In this article, an adaptive finite-time fault-tolerant control (FTC) strategy is proposed for state tracking of uncertain systems subject to actuator faults and input saturation. The proposed control scheme effectively deals with the coupling of unknown model uncertainties and actuator faults using an adaptive mechanism based on a wisely chosen Lyapunov function. Simulation and comparison results in a flight control system show the effectiveness and advantages of the proposed control scheme.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Automation & Control Systems
Huijin Fan et al.
Summary: This paper studies the fault-tolerant control problem for a class of nonlinear systems with uncertain parameters and unknown actuator failures. An adaptive fault-tolerant control scheme based on event-triggered strategy is proposed, and a set of event-triggering conditions are designed for both the controller and the parameter estimators. It has been proven that the closed-loop signals are globally uniformly bounded and the system output converges to a compact set. A modified fault-tolerant control scheme is also designed for the case with a finite number of failures, ensuring the asymptotic convergence of system states. The effectiveness of the proposed schemes is illustrated through a robot manipulator example.
Article
Automation & Control Systems
Di Lu et al.
Summary: This paper addresses the problem of model reference adaptive controller design with actuator failure in a series of uncertain singular systems. The system with actuator failure is treated as a switching system with two subsystems, and the adaptive controller is designed using linear matrix inequalities and the resident time method to ensure global stability of the error switching system. The proposed method is applied to the HiMAT aircraft to demonstrate its feasibility and effectiveness.
JOURNAL OF CONTROL AND DECISION
(2022)
Article
Automation & Control Systems
Jin-Zi Yang et al.
Summary: The article investigates the issues of asymptotic adaptive tracking control for uncertain nonlinear systems in the presence of actuator faults and unknown control directions. A new adaptive asymptotic tracking control method is presented, capable of realizing zero-tracking performance within a fault-tolerant control framework. The stability of the controlled system is ensured through fractional Lyapunov stability analysis, and the validity of the proposed scheme is verified by a simulation example.
JOURNAL OF CONTROL AND DECISION
(2022)
Article
Automation & Control Systems
Ben Niu et al.
Summary: An adaptive decentralized asymptotic tracking control scheme is developed in this paper for a class of large-scale nonlinear systems with unknown strong interconnections, unknown time-varying parameters, and disturbances. By filtering out all extra signals and introducing integral bounded functions and nonlinear filters, asymptotic tracking control is achieved effectively. Simulation results demonstrate the effectiveness of the proposed approach in handling issues like unknown interconnections, time-varying parameters, and disturbances in large-scale nonlinear systems.
IEEE-CAA JOURNAL OF AUTOMATICA SINICA
(2022)
Article
Automation & Control Systems
Chun-Hua Xie et al.
Summary: This paper investigates the static-feedback guaranteed cost control problem for linear systems with actuator faults. The theoretical analysis shows that a static-feedback guaranteed cost controller can be well designed under the actuator redundancy condition to ensure stability and desirable performance. Compared to dynamic feedback controllers, static-feedback controllers are simpler in design and can effectively handle severe and time-varying faults.
JOURNAL OF CONTROL AND DECISION
(2022)
Article
Automation & Control Systems
Dong Zhao et al.
Summary: This article discusses a distributed sensor fault accommodation scheme for a class of nonlinear systems modeled as interconnected subsystems. The proposed scheme is triggered when a sensor fault is detected and includes the analysis of the stability of the system before and after the fault detection, as well as the effectiveness of the fault accommodation scheme through simulation.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2022)
Article
Computer Science, Information Systems
Yu Xiong et al.
Summary: This paper proposes a strategy to address the decentralized fuzzy adaptive output feedback fault-tolerant control problem for nonlinear switched large-scale systems with sensor faults and unknown control gains. A novel state observer is designed to estimate unmeasured states and address unknown control gains; decentralized FTC controllers are designed based on backstepping technique and average dwell time method, ensuring that all states of the closed-loop system are semiglobal uniformly ultimately bounded and tracking errors converge to a small neighborhood of zero.
IEEE SYSTEMS JOURNAL
(2022)
Article
Engineering, Mechanical
Xinpeng Fang et al.
Summary: This paper investigates the adaptive fixed-time fault-tolerant control (FTC) problem for a class of uncertain multi-input multi-output (MIMO) nonlinear systems. A state observer is designed using radial basis function neural networks (NNs) to estimate the unmeasured states. An observer-based adaptive fixed-time FTC scheme is proposed, which can handle unknown actuator faults, asymmetric time-varying state constraints, and input saturation simultaneously. It is shown that boundedness of closed-loop signals is guaranteed, the system output tracks desired signal within a bounded compact set in fixed time, and asymmetric time-varying state constraint requirements are not violated. Furthermore, the settling time bound is independent of the initial states and dependent only on the designed parameters. Simulation results on a dynamic mechanical system demonstrate the effectiveness of the proposed FTC scheme.
NONLINEAR DYNAMICS
(2022)
Article
Computer Science, Artificial Intelligence
Jing Zhang et al.
Summary: This article investigates a decentralized adaptive neural network event-triggered sensor failure compensation control issue for nonlinear switched large-scale systems. A novel observer is designed for estimating unmeasured states, NNs are utilized for identifying uncertainties, a fault compensation mechanism is proposed, and a switching threshold strategy is developed to ensure bounded closed-loop signals. The proposed strategy is shown to effectively avoid Zeno behavior through simulation results.
IEEE TRANSACTIONS ON NEURAL NETWORKS AND LEARNING SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Xue Wang et al.
Summary: This article proposes a decoupling network-based method for infrared and visible image fusion, which effectively retains the texture details and luminance information of the source images while preserving the high-contrast regions. Extensive experiments demonstrate that the proposed method generates fused images with saliency objects and clear details, outperforming other state-of-the-art methods.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2022)
Article
Computer Science, Artificial Intelligence
Xiaoyan Jiang et al.
Summary: This article investigates the decentralized adaptive fuzzy tracking control problem for a class of large-scale interconnected uncertain systems, considering faults and denial-of-service attacks. Using fuzzy logic system and adaptive method, the unknown terms are dealt with, and backstepping and dynamic surface control technique are employed in the control design process. The designed controller is able to compensate for the effects of faults and uncertainties, ensuring bounded signals in the closed-loop systems and convergence of tracking errors to a small neighborhood of the origin.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Xiaolei Li et al.
Summary: This article investigates the adaptive resilient secondary voltage and frequency control problem for islanded ac microgrids in the presence of sensor faults and proposes a novel adaptive fault tolerant control scheme. The sufficient conditions are derived to guarantee the voltage tracking errors to be uniformly ultimately bounded and theoretically shows that frequency restoration and power sharing in the overall ac MG system can be ensured stable using the same control scheme. The problem of unknown boundaries sensor faults is more challenging compared to existing distributed control methods for secondary control of MG and still not well explored.
IEEE JOURNAL OF EMERGING AND SELECTED TOPICS IN POWER ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Woongsun Jeon et al.
Summary: This paper focuses on the detection of cyber-attacks on a wireless communication channel and simultaneous radar sensor health monitoring for a connected vehicle. It addresses the challenging task of estimating sensor failure and cyber-attacks, develops an observer with decoupled estimation error dynamics, and evaluates the performance in simulations. The proposed control strategy achieves resilient adaptive cruise control operation by switching to larger time-gaps and a non-connected controller when a cyber-attack is detected.
IEEE SENSORS JOURNAL
(2021)
Article
Automation & Control Systems
Zhirong Zhang et al.
Summary: This article presents an adaptive decentralized control scheme for interconnected uncertain systems with different control directions, utilizing K-filters and Nussbaum-type functions, and proving global stability of the closed-loop system with Lyapunov functions.Simulation results demonstrate the effectiveness of the proposed methodology.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2021)
Article
Automation & Control Systems
Jiali Ma et al.
Summary: This article proposes a global adaptive fault-tolerant control method for uncertain nonlinear systems, without a priori bounds of sensor sensitivity, actuation effectiveness, and disturbance. The switching-type adaptive controller is designed for online parameter tuning, and it has been proven to achieve global stability under the designed controller. A simulation example is provided to illustrate the effectiveness of the proposed method.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2021)
Article
Automation & Control Systems
Chenliang Wang et al.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2020)
Article
Automation & Control Systems
Yuan-Xin Li et al.
IEEE TRANSACTIONS ON CYBERNETICS
(2020)
Article
Automation & Control Systems
Bin Jiang et al.
JOURNAL OF CONTROL AND DECISION
(2020)
Article
Engineering, Electrical & Electronic
Min Dong et al.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2019)
Article
Automation & Control Systems
Lili Zhang et al.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2019)
Article
Automation & Control Systems
Chih-Chiang Chen et al.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2018)
Article
Automation & Control Systems
Ding Zhai et al.
Article
Automation & Control Systems
Chenliang Wang et al.
Article
Automation & Control Systems
Yongduan Song et al.
Article
Automation & Control Systems
Hao Yang et al.
Article
Automation & Control Systems
Chenliang Wang et al.
Article
Automation & Control Systems
Huijin Fan et al.
Article
Automation & Control Systems
Shanshan Li et al.
Article
Automation & Control Systems
Jing Zhou et al.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2008)
Article
Automation & Control Systems
Changyun Wen et al.
Article
Automation & Control Systems
W Lin et al.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2002)
