Resilient Control of Networked Control System Under DoS Attacks: A Unified Game Approach

Self Cite

Summary In this paper, stability of a networked control system under denial‐of‐service and false data injection attacks is analyzed with a predictive control method. To model denial‐of‐service attacks on the forward channel of networked control system, game theory is introduced for obtaining balanced results by denial‐of‐service frequency and duration. Then, measurement outputs of the networked control system are maliciously modified in the feedback channel. Under this double attack strategy, the stability of networked control system with predictive control is analyzed using a switched system method. By comparing three types of attack models, advantages of the double attacks are discussed to illustrate the necessity of this research. A numerical simulation is given to demonstrate effectiveness of the proposed methods on a networked control system under double attacks.

Section: Modeling and Problem Formulationmentioning

confidence: 99%

Stability analysis on networked control systems under double attacks with predictive control

Yang

Xia

et al. 2019

Self Cite

“…System (Σ e ) is said to be the nominal system (Σ n ) if w ( t k ) ≡ 0. In the situation where the central coordination is infeasible , it is more practical that each controller only optimized its individual objective function. The individual cost function of system (Σ n ) yields

J^{i} = double-struckE 2.03em \{z^{T} (t_{K}) {scriptQ}_{δ}^{i K} z (t_{K}) + \sum_{k = 0}^{K - 1} {monospaceT}_{k} 1.19em (z^{T} (t_{k}) {scriptQ}_{δ}^{i} z (t_{k}) + normalΦ (t_{k}) 1.19em) 2.03em \}, i \in boldS,

where

normalΦ (t_{k}) = α_{t_{k}}^{i} {u^{i}}^{T} (t_{k}) {scriptR}_{δ}^{i i} u^{i} (t_{k}) + \sum_{j = 1, j \neq i}^{S} ϵ_{j} {u^{j}}^{T} (t_{k}) {scriptR}_{δ}^{i j} u^{j} (t_{k})

.…”

Section: Problem Formulationmentioning

confidence: 99%

Multi‐tasking optimal control of networked control systems: A delta operator approach

Yuan

Guo

et al. 2016

Self Cite

Summary In this paper, the multi‐tasking optimal control problem is addressed in the delta‐domain for a class of networked control systems (NCSs) with external disturbances. A delta‐domain model is proposed to describe the NCSs with random packet dropouts and long‐time delay, and the so‐called ε‐Nash equilibrium is employed to quantify the impacts from the disturbances on the underlying NCSs. The multi‐tasking optimal control strategies are developed and the upper bound for the ε‐Nash equilibrium is provided explicitly. Some simulation results on the two‐area load frequency control system are given to show the validity and applicability of the proposed method. Copyright © 2016 John Wiley & Sons, Ltd.

“…Furthermore, in a unified framework, the finite‐horizon tracking control for stochastic systems simultaneously subjected to denial‐of‐service (DoS) and deception attacks was studied in the work of Zhao et al, and the corresponding countermeasure scheme was proposed. By exploiting the game theory, the resilience of networked control systems and wireless networked control systems subject to DoS attacks was analyzed in the works of Yuan et al Moreover, in the work of Zhao et al, the design, implementation, and impact evaluation of undetectable attacks were discussed via a geometric approach. For linear system under the false data injection attacks, an observer‐based control strategy with an attack‐resilient performance was presented in the work of Xie and Yang .…”

Section: Introductionmentioning

confidence: 99%

On modeling and secure control of cyber‐physical systems with attacks/faults changing system dynamics: An average dwell‐time approach

Huang

Dong

2019

Summary The problem of secure control in cyber‐physical systems is considered in this work. A new modeling framework is first introduced, ie, cyber‐physical systems with attacks/faults changing system dynamics is modeled as a switched system, where the switching among subsystems is triggered by a rule generated by attackers but unknown for defenders. Based on an average dwell‐time approach incorporated by the attack frequency and duration properties, a convergence condition of the Lyapunov function on active intervals of subsystems (ie, the attack and healthy modes), under the developed switched controller, is given. Next, the unknown rule, however, leads to the asynchronous switching problem between the candidate controllers and system modes. As a result, degradation of the system performance (eg, a large chatter occurred in the system state trajectories) in the asynchronous intervals is caused. To address the difficulty, a novel switching law based on a prescribed performance is proposed, and it is shown that the asynchronous intervals are shortened by reducing adjustable parameters in the switching law. An illustrative example verifies the effectiveness of the proposed method.