Control of cyber physical systems subject to cyber and physical attacks
AssigneeKing Fahd University of Petroleum and Minerals
InventorsMagdi Sadek Mostafa Mahmoud, Mutaz M. Hamdan
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Abstract
Methods, systems, and computer readable media to control a cyber physical system using an observer-based controller are described.
Claims20
An observer-based controller to securely control a cyber physical system, the observer-based controller including:
- a detector to determine an occurrence of an attack on the cyber physical system and to inform the observer-based controller via a signal;
- and
- an observer to estimate a system state of the cyber physical system based on at least partial information about the cyber physical system,
- wherein the observer-based controller is configured to adjust an observer gain and a controller gain upon receiving the signal from the detector indicating the attack, and
- wherein the observer-based controller is configured to control the cyber physical system such that a physical attack signal is secured to be within a first threshold, a deception attack signal is secured to be within a second threshold, and an error of the estimated system state is secured to be within a third threshold.
A method to control a cyber physical system, the method comprising:
- detecting, via a detector, an occurrence of an attack on the cyber physical system;
- informing an observer-based controller of the attack via a signal from the detector;
- estimating, using an observer, a system state of the cyber physical system based on at least partial information about the cyber physical system;
- adjusting, using the observer-based controller, an observer gain and a controller gain upon receiving the signal from the detector indicating the attack;
- and
- controlling, using the observer-based controller, the cyber physical system such that a physical attack signal is secured to be within a first threshold, a deception attack signal is secured to be within a second threshold, and an error of the estimated system state is secured to be within a third threshold.
A non-transitory computer readable medium having instructions stored therein that, when executed by one or more processors, cause the one or more processors to perform a method to control a cyber physical system using an observer-based controller, the method comprising:
- detecting, via a detector, an occurrence of an attack on the cyber physical system;
- informing the observer-based controller of the attack via a signal from the detector;
- estimating, using an observer, a system state of the cyber physical system based on at least partial information about the cyber physical system;
- adjusting, using the observer-based controller, an observer gain and a controller gain upon receiving the signal from the detector indicating the attack;
- and
- controlling, using the observer-based controller, the cyber physical system such that a physical attack signal is secured to be within a first threshold, a deception attack signal is secured to be within a second threshold, and an error of the estimated system state is secured to be within a third threshold.
Dependencies are inferred from the claim text.