Article
Automation & Control Systems
Zhiying Wu, Junlin Xiong, Min Xie
Summary: This paper investigates the event-triggered control problem for networked control systems subject to deception attacks. An improved event-triggered scheme is proposed to reduce transmission rate and a new switched time-delay system model is developed. Exponential mean-square stability criteria are derived using a constructed Lyapunov function, and a co-design method is developed to obtain trigger parameters and mode-dependent controller gains. The proposed scheme is verified by an unmanned aerial vehicle system.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2021)
Article
Automation & Control Systems
Feng Hu, Chunting Jiao, Hongbin Chang, Xiaojie Su, Yongcheng Gu
Summary: This paper focuses on designing an event-triggered controller for a networked control system using a novel integral inequality. The new design technique improves system stability and reduces unnecessary computation and communication resource usage.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2021)
Article
Automation & Control Systems
Tao Yu, Junlin Xiong
Summary: This paper investigates the event-triggered P2-gain control issues for time-delay networked control systems with a round-robin protocol. The adoption of round-robin protocol and event-triggered strategy can alleviate the burden of network transmission and save network resources and bandwidth. By establishing appropriate Lyapunov functional and matrix inequalities, sufficient conditions for stability and P2-gain are derived. An iterative algorithm is then presented to design the controllers and achieve the minimal P2-gain. Two examples are conducted to validate the effectiveness and benefits of the proposed results.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(2023)
Article
Automation & Control Systems
JunMin Park
Summary: This paper proposes a stability criterion for networked control systems with a constant transmission delay by constructing novel Lyapunov-Krasovskii functionals. The criterion utilizes continuous and looped functionals to handle samplings and transmission delay, and is obtained based on linear matrix inequalities.
JOURNAL OF THE FRANKLIN INSTITUTE-ENGINEERING AND APPLIED MATHEMATICS
(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
Huihui Ji, Baotong Cui, Xinzhi Liu
Summary: This paper investigates the problem of distributed networked sampled-data control for a class of distributed parameter systems with spatially-dependent diffusion terms. A distributed sensor network is proposed to obtain sampled-data measurements and a controller is designed based on this network. Global exponential stability criteria are obtained using Lyapunov method, linear matrix inequality technique, and time-delay approach.
COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION
(2021)
Article
Automation & Control Systems
Tingting Jiang, Yuping Zhang, Ju H. Park, Xiao Cai, Kaibo Shi
Summary: This study focuses on the problem of finite-time control design for a class of networked control systems (NCSs) with mixed delays. A novel hybrid dropout compensation control method is proposed to actively compensate for data packet dropouts in two communication channels. An improved augmented switched system model is constructed to ensure stochastic finite-time stability (SFTS) and improve the control performance of the closed-loop system. The theoretical results are verified by a numerical example.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Computer Science, Information Systems
Prakash Mani, Young Hoon Joo
Summary: This study investigates the Takagi-Sugeno fuzzy-model-based networked control system under the fuzzy event-triggered H-infinity control scheme, introducing a probability distribution based network transmission delay. By designing a fuzzy-membership dependent Lyapunov function and incorporating a switching concept with respect to the rate of changes in membership functions, the study aims to improve control performance. Through real-time systems validation, the proposed approach demonstrates superiority over existing works.
INFORMATION SCIENCES
(2022)
Article
Automation & Control Systems
Martin Steinberger, Martin Horn
Summary: This study considers a networked output feedback loop affected by packetized transmissions of the output signal, and presents an easy-to-use stability criterion covering two cases, including packet numbering and synchronization. The optimal constant time delay for minimizing the l(2) gain due to uncertain packet delays is deduced, and the proposed novel technique is shown to be less conservative than existing stability criteria based on the small gain theorem.
IET CONTROL THEORY AND APPLICATIONS
(2021)
Article
Automation & Control Systems
Henglei Xu, Xuerong Mao
Summary: This paper improves the previous theory of delay-dependent stability to be applied to hybrid stochastic differential delay equations (SDDEs) with non-differentiable time delays or special drift coefficients. The authors modify the decomposition scheme, adopt a weaker differentiability assumption, and adjust the Lyapunov functional to accommodate these new challenges.
NONLINEAR ANALYSIS-HYBRID SYSTEMS
(2023)
Article
Automation & Control Systems
Moritz Schulze Darup, Andreea B. Alexandru, Daniel E. Quevedo, George J. Pappas
Summary: Control systems are evolving rapidly to utilize modern tools, with encrypted control addressing security gaps and ensuring confidentiality of processed data in the control loop. This article provides a tutorial-style introduction to the emerging field of secure control for networked dynamical systems with encrypted data.
IEEE CONTROL SYSTEMS MAGAZINE
(2021)
Article
Mathematics
Sunil Kumar Mishra, Amitkumar Jha, Vijay Kumar Verma, Bhargav Appasani, Almoataz Y. Abdelaziz, Nicu Bizon
Summary: This paper presents an optimized algorithm for event-triggered control of networked control systems. By reducing the number of samples sent over the communication channel and designing appropriate event triggering rules, the stability of the system can be improved. Case studies demonstrate the effectiveness of the proposed ETC in terms of system states, control effort, and inter-event execution time.
Article
Automation & Control Systems
Stefan H. J. Heijmans, Romain Postoyan, Dragan Nesic, W. P. Maurice H. Heemels
Summary: This article considers an alternative condition on the communication instants to better capture the time-varying properties of the transmission intervals, proposing a bound on the average allowable transmission interval in addition to the existence of a maximal allowable transmission interval. Through a novel Lyapunov-based analysis, stability of the NCS can still be guaranteed under this different condition on the transmission intervals.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2021)
Article
Automation & Control Systems
Damon E. Ghetmiri, Amor A. Menezes
Summary: This paper investigates a class of positive systems with an input that is subject to an unknown state dependent power law delay and saturation. An innovative control strategy is proposed to compensate for control domain restrictions using system dynamics. Lyapunov stability analysis demonstrates that the reference tracking error of the closed-loop system is uniformly ultimately bounded. Numerical simulations on a human coagulation model show the efficacy and superior performance of the proposed controller compared to relevant literature. This example application advances personalized closed-loop treatments for trauma coagulopathy, which has a 30% mortality rate with current open-loop clinical approaches.
Article
Automation & Control Systems
Huazhou Hou, Xinghuo Yu, Zao Fu
Summary: A novel sliding mode control design method is developed to address the robust stabilization problem for uncertain time-varying networked control systems subject to state delay. The method utilizes auxiliary matrices to avoid the difficulties of finding quadratic Lyapunov functions and solving the linear matrix inequalities.
IEEE TRANSACTIONS ON AUTOMATIC CONTROL
(2022)
