A virtual actuator approach for the secure control of networked LPV systems under pulse-width modulated DoS attacks

Abstract

In this paper, we formulate and analyze the problem of secure control in the context of networked linear parameter varying (LPV) systems. We consider an energy-constrained, pulse-width modulated (PWM) jammer, which corrupts the control communication channel by performing a denial-of-service (DoS) attack. In particular, the malicious attacker is able to erase the data sent to one or more actuators. In order to achieve secure control, we propose a virtual actuator technique under the assumption that the behavior of the attacker has been identified. The main advantage brought by this technique is that the existing components in the control system can be maintained without need of retuning them, since the virtual actuator will perform a reconfiguration of the plant, hiding the attack from the controller point of view. Using Lyapunov-based results that take into account the possible behavior of the attacker, design conditions for calculating the virtual actuators gains are obtained. A numerical example is used to illustrate the proposed secure control strategy.

Observer‐based MPC for NCS with actuator saturation and DoS attacks via interval type‐2 T–S fuzzy model

“…In this paper, the forward channel between controller and actuator is attacked by cyber attacker and the feedback channel between observer and controller is assumed as a secured and reliable network channel [12]. For , given that where indicates the packet dropout rate.…”

“…Specially, there exist many threats in wireless communication networks for the NCSs due to channel fading, interference, scattering, cyber attacks and so on. Cyber attacks are major threats to NCSs and can be classified into deception attacks [6–8] and denial of service (DoS) attacks [9–12]. Deception attacks are to destroy the integrity of data by injecting false information.…”

“…From the perspective of system performance, the optimal DoS attacks which maximised the cost function were studied in [11]. To realise the security control of the networked linear parameter varying systems under DoS attacks, a virtual actuator technique was proposed in [12].…”

Frequency-based detection of replay attacks: application to a quadrotor UAV

“…and physical processes has led to the introduction of a new class of systems, known as cyber-physical systems (CPSs) [1]. CPSs are characterized by a higher efficiency, but also by bigger vulnerabilities, which can be exploited by a malicious agent in order to perform a cyber attacks, resulting in some kind of damage or economical loss [2], [3].…”

Time Evolution Pattern Analysis for Cyber Attack Detection in a Two-tank Benchmark

“…Cyber attacks are different from faults due to the fact that they do not affect only the physical layer of the CPS, but the cyber one as well. In order to make a control system resilient in face of such attacks, attack detection and secure control techniques must be developed [5], [6].…”