Article
Automation & Control Systems
Yuan Sun, Peng Shi, Cheng-Chew Lim
Summary: This paper investigates the scaled consensus problem for discrete-time multi-agent systems using the event-triggered sliding mode control approach. The problem considers unknown external bounded disturbance and time-varying state delay. A new event-triggered integral sliding surface function is introduced to handle the external disturbances. A distributed event-triggered control method is integrated with sliding mode control to address the energy-constrained issue. A sufficient condition is established to ensure a predefined H-infinity performance for the system. An event-triggered sliding mode control protocol is developed to guarantee the state trajectories of all agents approach the dictated scales in the discrete-time multi-agent systems.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Article
Engineering, Electrical & Electronic
Rong Nie, Wangli He, Wenli Du, Ziqiang Lang, Shuping He
Summary: The study utilizes dynamic event-triggered sliding mode control to address consensus tracking, introducing a mechanism to avoid redundant data transmission and designing a sliding mode surface to ensure consensus tracking through sufficient conditions.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2022)
Article
Automation & Control Systems
Yiping Luo, Xitong Gao, Jinde Cao, Ardak Kashkynbayev
Summary: The study evaluates the finite-time consensus problem for leader-following systems under external disturbances and internal nonlinear dynamics. It proposes a new model and control strategy, proving that the systems can achieve consensus in finite time while avoiding Zeno behavior of event-triggered controllers.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Automation & Control Systems
Yang Yang, Yue Qian
Summary: In this study, a triggered communication mechanism-based adaptive control strategy is proposed for achieving output consensus in a class of uncertain nonlinear multi-agent systems. By constructing a distributed estimator and applying recursive sliding-modes and nonlinear gain functions, the performance of traditional control methods is improved. Additionally, an adaptive parameter is introduced to simplify computational complexity in the control strategy.
INTERNATIONAL JOURNAL OF CONTROL
(2022)
Article
Automation & Control Systems
Qingdong Sun, Junchao Ren, Yuqi Guo
Summary: This paper investigates the issue of dynamic event-triggered sliding mode control for uncertain discrete-time systems with disturbances based on the reaching law. It proposes a dynamic event-triggered mechanism to enhance the data utilization rate and introduces an observer accordingly. The paper also designs an observer-based linear sliding surface and a sliding mode controller based on a chattering-free reaching law to ensure the reachability of the sliding region.
NONLINEAR ANALYSIS-HYBRID SYSTEMS
(2023)
Article
Engineering, Multidisciplinary
Yan Wang, Xiao-Meng Li, Wang Yuan, Deyin Yao, Hongyi Li
Summary: This paper investigates the tracking control for multiple Euler-Lagrange systems with external disturbances in finite time under undirected topology. A dynamic model is established to accurately describe the systems. An integral terminal sliding mode surface is devised to converge the tracking errors of the system state to a neighborhood of zero within finite time, and the designed finite-time controller ensures fast convergence and high steady-state accuracy. A dynamic event-triggered mechanism is introduced to reduce the controller update frequency and network transmission communication load. The Lyapunov stability theory and finite-time stability criterion prove that all signals in the closed-loop system are uniformly ultimately bounded in finite time. Simulation results validate the effectiveness of the proposed control method.
SCIENCE CHINA-TECHNOLOGICAL SCIENCES
(2023)
Article
Automation & Control Systems
Wei Zhu, Shuang Zhou, Huannan Zheng, Junjie Yang
Summary: This study investigates the finite-time containment control problem of second-order nonlinear multi-agent systems with disturbances. Assuming a directed network topology among agents, a robust event-triggered terminal sliding mode controller is designed to handle the disturbances and achieve the accessibility of sliding manifold and consensus tracking. The Zeno-behavior of triggering time sequence is also excluded.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Article
Automation & Control Systems
Jiarui Li, Yugang Niu, Jun Song
Summary: This article investigates the sliding mode control for continuous-time systems under the requirement of finite-time boundedness, focusing on utilizing limited state information to achieve FTB of the closed-loop system. By changing the continuous-time SMC law into an implementable form dependent on available sampled state via event triggering transmission, the controlled system's state trajectory can be driven onto a specified sliding surface within a finite time, and then remain within a domain around this sliding surface. The known partitioning strategy on SMC with FTB is infeasible due to the periodic event-triggered scheme, so an analysis of the FTB over the whole given time and a selection condition on the robust term are provided via the given time parameter, with numerical simulation results illustrating the proposed periodical event-triggered SMC scheme.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Mathematics, Interdisciplinary Applications
Ruihong Li, Xingxin Li, Qintao Gan, Huaiqin Wu, Jinde Cao
Summary: This paper focuses on the finite time consensus problem for variable-order fractional multi-agent systems with piecewise-smooth dynamics. New variable-order fractional difference inequality and finite time stability theorem are developed, which greatly extend some existing results. A distributed control protocol is presented with a dynamic event-triggered mechanism (DETM) to enhance event execution times and reduce resource consumption. The proposed approach achieves consensus within a finite time and avoids the occurrence of the Zeno phenomenon. Circuit realization approach and simulation results are provided to validate the theoretical analysis.
CHAOS SOLITONS & FRACTALS
(2023)
Article
Engineering, Multidisciplinary
Jiayi Cai, Jingyi Wang, Jianwen Feng, Guanrong Chen, Yi Zhao
Summary: This paper investigates the observer-based event-triggered adaptive sliding mode control problem of semi-Markovian jumping multi-agent systems with unknown and uncertain bounded transfer probabilities. An innovative observer-based distributed event-triggered adaptive mechanism is proposed to reduce excessive network communication. Additionally, a novel integral sliding surface is constructed to withstand interferences. With the help of a stochastic semi-Markovian Lyapunov functional and linear matrix inequalities approaches, conditions are achieved to ensure that all agents can track the leader in the multi-agent systems.
IEEE TRANSACTIONS ON NETWORK SCIENCE AND ENGINEERING
(2023)
Article
Mathematics, Interdisciplinary Applications
Bingrui Xu, Bing Li
Summary: This paper addresses the problem of achieving group consensus in a fractional-order multi-agent system (FOMAS) without considering the intergroup balance condition. By utilizing a dynamic event-triggered mechanism, the control input update frequency is greatly reduced while maintaining consensus performance. The paper introduces novel criteria for analyzing the stability of error systems using the Lyapunov direct method and the properties of a fractional-order derivative, and also excludes Zeno behavior in the triggering mechanism. An example and simulations are provided to validate the theoretical results.
FRACTAL AND FRACTIONAL
(2023)
Article
Computer Science, Information Systems
Feida Song, Leimin Wang, Qingyi Wang, Shiping Wen
Summary: This paper proposes a unified event-triggered sliding-mode control framework for achieving the finite/fixed-time reachability of a practical sliding-mode band. The size of the sliding-mode band is dependent on the event function, providing better control performance. The controlled system's ultimate finite-time stability is guaranteed, and a more precise estimation to settling time is obtained by adjusting the initial value of integration for the sliding phase.
INFORMATION SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Irene Perez-Salesa, Rodrigo Aldana-Lopez, Carlos Sagues
Summary: This work addresses the problem of estimating the dynamic average of time-varying signals in a communication network. A consensus algorithm is proposed using discrete sampling and event-triggered communication. The algorithm achieves exact convergence even when the dynamic average signal is persistently varying, while reducing chattering in the discrete-time setting.
Article
Computer Science, Theory & Methods
Xiaofei Fan, Zhanshan Wang, Zhan Shi
Summary: This paper investigates an event-triggered integral sliding mode controller design for uncertain T-S fuzzy systems. Through a novel triggering condition and controller design, the system trajectory can converge to a bounded region and the Zeno phenomenon can be avoided.
FUZZY SETS AND SYSTEMS
(2021)
Article
Engineering, Electrical & Electronic
Jinhui Zeng, Pin Wang, Housheng Su, Chengjie Xu
Summary: This study investigates the consensus control of multi-agent systems with nonidentical intelligence characteristics over undirected communication topologies. The concept of intelligent level is introduced to characterize the intelligence characteristics of the agents. A novel dynamic event-triggered communication mechanism is developed based on periodic sampled data and the intelligent levels of the agents, ensuring the desired consensus.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
(2023)
Article
Automation & Control Systems
Jiaju Yu, Shuanghe Yu
Summary: This paper proposes an improved fixed-time bipartite flocking protocol, addressing the issues of rigorousness in derivation and parameter selection in the original protocol.
INTERNATIONAL JOURNAL OF CONTROL
(2022)
Article
Automation & Control Systems
Yan Yan, Shuanghe Yu, Xinghuo Yu
Summary: In this article, the impact of Euler discretization on a sliding-mode control system with a supertwisting algorithm (STA) was studied. It was shown that the trajectory eventually converges to a bounded region around the origin, with periodic behaviors explored. The effectiveness of the proposed strategies was demonstrated through simulation results.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2021)
Article
Automation & Control Systems
Ying Zhao, Mingchuan Pang, Dan Ma, Shuanghe Yu
Summary: This paper presents a multi-objective switching control strategy to capture both the robust guaranteed cost performance and the rate anti-bump switching performance of switched systems. Through co-constructing a switching law and a switching controller, the strategy overcomes the possible conflict in performance demands. By regulating the acceleration of a switched engine model, the efficiency of the approach is verified.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2021)
Article
Automation & Control Systems
Lizuo Wen, Shuanghe Yu, Ying Zhao, Yan Yan
Summary: This paper addresses the dynamic event-triggered consensus problem of multiple autonomous underwater vehicles (AUVs) via the adaptive control method. It proposes an adaptive dynamic event-triggered mechanism (ADEM) to reduce the transmission burden and introduces a simplified first-order model for the AUV system. A novel adaptive dynamic event-triggered consensus control protocol is developed for each AUV. The simulation results demonstrate the advantage of the proposed scheme.
INTERNATIONAL JOURNAL OF CONTROL
(2023)
Article
Automation & Control Systems
Yangguang Xu, Ge Guo, Shuanghe Yu
Summary: This paper investigates the application of an observer-based sliding mode control in connected vehicles to address denial-of-service attacks. A reduced order observer is used to estimate the relative acceleration between neighboring vehicles, and a switching communication topology is introduced to simulate the attacks. The proposed observer-based sliding mode controller achieves desired stability performance and a quadratic cost performance is defined with a provable cost upper bound. Sufficient conditions are provided for connected vehicles to achieve robust tracking performance, with input-to-state string stability guaranteed under zero initial errors.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2022)
Article
Automation & Control Systems
Ying Zhao, Mingchuan Pang, Peng Wang, Shuanghe Yu
Summary: This article proposes an interval observer-based bumpless switching control scheme for switched systems, which can stabilize the system and reduce the unwanted big steps in the control signal.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2022)
Article
Engineering, Electrical & Electronic
Lina Jin, Guoyou Shi, Shuanghe Yu, Xiaohong Wang
Summary: The fast finite-time consensus problem of multi-agent systems under diverse topologies is investigated using a hybrid linear and fractional power protocol. The protocol improves convergence performance when the state is far from the equilibrium and accelerates convergence process when the state is close to the equilibrium. It achieves a faster convergent rate compared to individual asymptotic or finite-time consensus protocols. The leaderless multi-agent systems are studied under undirected topology, and then extended to the leader-following case under directed networks. The protocols are validated through numerical simulations.
CIRCUITS SYSTEMS AND SIGNAL PROCESSING
(2023)
Article
Computer Science, Artificial Intelligence
Ying Zhao, Yuxuan Gao, Hong Sang, Shuanghe Yu
Summary: This investigation presents an event-triggered-based antidisturbance switching control technique for switched Takagi-Sugeno (T-S) fuzzy systems subject to multiple disturbances and unavailable system state. A composite observer is constructed to capture the unavailable system state and modeled disturbances, which is used as the basis for establishing a switching controller with an event-triggered program. Sufficient conditions are provided for the switched T-S FSs to achieve disturbances suppression and communication transmission resource saving.
IEEE TRANSACTIONS ON FUZZY SYSTEMS
(2023)
Article
Engineering, Marine
Tao Jiang, Yan Yan, Shuang-He Yu
Summary: This paper focuses on the trajectory tracking control of unmanned surface vehicles (USVs) considering input quantization, actuator faults, and dead zones. The proposed control method utilizes hysteresis quantizer to reduce transmission rate, prescribed performance control technology to guarantee tracking performance, and predefined-time adaptive sliding mode control (SMC) with auxiliary and barrier functions to handle uncertainties. Numerical simulations demonstrate the effectiveness of the designed controller.
JOURNAL OF MARINE SCIENCE AND ENGINEERING
(2023)
Article
Automation & Control Systems
Yuxuan Gao, Ying Zhao, Hong Sang, Shuanghe Yu, Yan Yan
Summary: This investigation proposes a dynamic event-triggered-based anti-disturbance control technique for the uncertain linear parameter varying (LPV) systems subject to multiple disturbances. First, an observer is constructed to capture the unavailable modeled disturbances. Then, a feedback controller is proposed. Sufficient conditions are presented for the uncertain LPV systems to achieve the multiple disturbances suppression and communication transmission resources saving. The reasonability of the proposed control scheme is verified by an example of a turbofan.
INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL
(2023)
Article
Automation & Control Systems
Yan Yan, Shuanghe Yu, Xiaomei Gao, Defeng Wu, Tieshan Li
Summary: This article develops continuous and periodic event-triggered sliding-mode control algorithms for path following of underactuated surface vehicles (USVs). The upper bounds of quasi-sliding modes for path following of USVs are established for the first time. Continuous and periodic event-triggered mechanisms are considered and added into the proposed continuous sliding-mode control scheme. The proposed strategies can make the sliding variables reach the quasi-sliding modes and stay in there, while reducing energy consumption. The effectiveness of the proposed control methods is validated through simulation results.
IEEE TRANSACTIONS ON CYBERNETICS
(2023)
Article
Engineering, Electrical & Electronic
Ying Zhao, Donghui Wu, Changyi Xu, Shuanghe Yu, Tianhe Liu, Dong Yang
Summary: This article focuses on the control issue of the switched neural network systems (SNNSs) encountered by the unmeasurable neural network (NN) modeled disturbance and the measurable unmodeled disturbance, proposing an adaptive anti-disturbance bumpless transfer (AADBT) control strategy.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Article
Computer Science, Information Systems
Yilin Wang, Shuanghe Yu, Chengpeng Li, Xinjian Xiang, Yantai Huang
Summary: This paper investigates the sampled-data consensus of networked Euler-Lagrange systems, tackling the issue by converting it to the stability problem and proving the consensus through a modified discrete small-gain analysis. Despite potential increases in Lyapunov functions at sampling instants, consensus of the overall system is still guaranteed under the small-gain consensus condition.
Article
Computer Science, Information Systems
Yilin Wang, Shuanghe Yu, Xinjian Xiang, Youbing Zhang
Summary: This paper focuses on the sampled-data consensus of networked Euler-Lagrange systems, addressing the issue of infinities in control input due to differentiation of discontinuous sampled data signals. By using differentiable scaling functions, the infinities are eliminated while ensuring consensus under a compatible criterion.
