Stabilization of uncertain networked control systems with actuator saturation and probabilistic cyberattacks

Huang, Xin; Xing, Mali; Mo, Haoyi; Hu, Shengke; Luo, Honglun

doi:10.1002/asjc.2937

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…where (1) is the forward stochastic difference equation and ( 4) is the backward stochastic difference equation.…”

Section: Solution To Problemmentioning

confidence: 99%

“…Networked control systems (NCSs) are communication control system composed of controller, sensor, actuator, and the control loop through the communication network [1][2][3]. NCSs have advantages of low cost, simple operation, and high reliability, such that they boost application development in UAV, deep-sea exploitation, and some manufacturing systems [4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Necessary and sufficient optimal control conditions for networked control systems with input delay and Markovian packet dropouts

Cai,

Lu,

Wang

et al. 2023

Asian Journal of Control

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This article studies the optimal control for networked control systems (NCSs) subject to Markovian packet dropouts and input delay. In this scenario, Markovian packet dropouts occur in two channels, that is, from sensor to controller and from controller to actuator. Meanwhile, the input delay arises in the channel from controller to actuator. The contributions of this paper are as the following two aspects: Firstly, based on Pontryagin's maximum principle, the solution to the forward and backward stochastic difference equations (FBSDEs) is obtained. Secondly, in virtue of the obtained solution to the FBSDEs, sufficient and necessary optimal control conditions are derived and the explicit expression of the optimal controller is presented. The validity of the results is illustrated by numerical examples.

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“…where (1) is the forward stochastic difference equation and ( 4) is the backward stochastic difference equation.…”

Section: Solution To Problemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Necessary and sufficient optimal control conditions for networked control systems with input delay and Markovian packet dropouts

Cai,

Lu,

Wang

et al. 2023

Asian Journal of Control

View full text Add to dashboard Cite

show abstract

Optimal design and performance analysis of secure estimator for cyber‐physical systems against deception attacks

Han,

Zhang,

Jin

et al. 2024

Asian Journal of Control

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Cyber‐physical systems (CPSs) are increasingly vulnerable to the threat from malicious adversaries owing to the deep integration of networks and facilities; therefore, CPSs' security against cyber attacks has attracted extensive attention. The deception attack is one of the typical cyber attacks targeting CPSs, and a deception attack mode is established to describe the simultaneous occurrence of actuator and sensor attacks in this paper. Compared with single‐target deception attacks with constant value, the designed attack mode that can describe deception attacks against multiple components and embedded random characteristics has higher applicability in practical engineering processes. To counter such attack behavior, a secure estimator is proposed based on the ideology of augmented state to achieve the optimal design of secure state estimation and deception attack identification. Taking the energy shortage problem of CPSs into account, a novel event‐triggered communication mechanism is introduced on the basis of measurement residuals to improve resource efficiency by reducing low‐value information transmission. The communication scheme and the augmented state estimator are co‐designed by adopting the implicit information of the event‐triggered mechanism. Then, the performance of the co‐designed estimator is analyzed by the upper bound of the estimation error covariance matrix. Besides, the reconciliation between estimation performance and communication energy consumption is achieved by the derivation of Pareto equilibrium. Finally, applications of our approaches to a 3D target tracking system are provided to illustrate the effectiveness of the proposed method.

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Robust H∞ Control for Autonomous Underwater Vehicle’s Time-Varying Delay Systems under Unknown Random Parameter Uncertainties and Cyber-Attacks

Vimal Kumar,

Kim

2024

Applied Sciences

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This paper investigates robust H∞-based control for autonomous underwater vehicle (AUV) systems under time-varying delay, model uncertainties, and cyber-attacks. Sensor and actuator cyber-attacks can cause faults in the overall AUV system. In addition, the behavior of the system can be affected by the presence of complexities, such as unknown random uncertainties that occur in system modeling. In this paper, the robustness against unpredictable random uncertainties is investigated by considering unknown but norm-bounded (UBB) random uncertainties. By constructing a proper Lyapunov–Krasovskii functional (LKF) and using linear matrix inequality (LMI) techniques, new stability criteria in the form of LMIs are derived such that the AUV system is stable. Moreover, this work is novel in addressing robust H∞ control, which considers time-varying delay, cyber-attacks, and randomly occurring uncertainties for AUV systems. Finally, the effectiveness of the proposed results is demonstrated through two examples and their computer simulations.

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Stabilization of uncertain networked control systems with actuator saturation and probabilistic cyberattacks

Cited by 3 publications

References 33 publications

Necessary and sufficient optimal control conditions for networked control systems with input delay and Markovian packet dropouts

Necessary and sufficient optimal control conditions for networked control systems with input delay and Markovian packet dropouts

Optimal design and performance analysis of secure estimator for cyber‐physical systems against deception attacks

Robust H∞ Control for Autonomous Underwater Vehicle’s Time-Varying Delay Systems under Unknown Random Parameter Uncertainties and Cyber-Attacks

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