Patent ID: 11874930
Assignee: BATTELLE ENERGY ALLIANCE, LLC
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A method for anomaly detection in a cyber-physical system (CPS), the method comprising:
deriving a physics-based correlation from a configuration of one or more physical components of the CPS, the physics-based correlation defining a mathematical relationship between a plurality of physical attributes of the CPS, the plurality of physical attributes comprising a first physical attribute and a second physical attribute;
acquiring measurements of respective physical attributes of the plurality of physical attributes from the CPS, the measurements associated with a capture time;
applying the mathematical relationship defined between the plurality of physical attributes to determine an estimated value for the first physical attribute at the capture time based, at least in part, on a measurement of the second physical attribute associated with the capture time;
determining a physical state (PS) error metric for the capture time, the PS error metric configured to quantify deviation of the acquired measurements associated with the capture time from the mathematical relationship defined between the plurality of physical attributes by the physics-based correlation, wherein the PS error metric is based, at least in part, on an error between a measurement of the first physical attribute associated with the capture time and the estimated value of the first physical attribute determined for the capture time; and
detecting anomalous behavior of the CPS based, at least in part, on the PS error metric.