Scalable hierarchical abnormality localization in cyber-physical systems

Patent · Tue Nov 15 04:00:00 EST 2022

OSTI ID:1986819

Abbaszadeh, Masoud; Yund, Walter; Holzhauer, Daniel Francis

A cyber-physical system may have monitoring nodes that generate a series of current monitoring node values over time that represent current operation of the system. A hierarchical abnormality localization computer platform accesses a multi-level hierarchy of elements, and elements in a first level of the hierarchy are associated with elements in at least one lower level of the hierarchy and at least some elements may be associated with monitoring nodes. The computer platform may then determine, based on feature vectors and a decision boundary, an abnormality status for a first element in the highest level of the hierarchy. If the abnormality status indicates an abnormality, the computer platform may determine an abnormality status for elements, associated with the first element, in at least one level of the hierarchy lower than the level of the first element. These determinations may be repeated until an abnormality is localized to a monitoring node.

• Research Organization: General Electric Company, Schenectady, NY (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: OE0000833
• Assignee: General Electric Company (Schenectady, NY)
• Patent Number(s): 11,503,045
• Application Number: 16/261,931
• OSTI ID: 1986819
• Country of Publication: United States
• Language: English