System and method for combining diagnostic evidences for turbine engine fault detection
October 18, 2026. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesRule based diagnostic system with dynamic alteration capability Methods and apparatus for system fault diagnosis and control Evaluation system for determining analogy and symmetric comparison among objects in model-based computation systems Expert knowledge system development tool Fuzzy inference system having a dominant rule detection unit Diagnosis method for vehicle systems Hypothesis selection for evidential reasoning systems Alert generation for trend performance analysis Mixtures of bayesian networks with decision graphs Bayesian belief networks for industrial processes InventorsAssigneeApplicationNo. 11583248 filed on 10/18/2006US Classes:702/113, Of mechanical system702/183, Diagnostic analysis702/184, Maintenance702/188Remote supervisory monitoringExaminersPrimary: Barlow, JohnAssistant: Moffat, Jonathan Attorney, Agent or FirmInternational ClassG01M 15/00AbstractA system and method for combining conclusions from multiple fault detection techniques to isolate likely faults in a turbine engine is provided. The system and method provide the ability to effectively deal with multiple concurrent faults in the engine. Additionally, the embodiments of the invention provide the ability to correctly characterize multiple conclusions generated from evidence having different levels of interdependence. In one embodiment, the conclusions based on device data with high dependency are aggregated using a high dependency aggregation rule, and the resulting high-dependency sets are then further aggregated using a weak dependency rule. Finally, any conclusions based on independent evidence can be aggregated using an independent combination rule. The resulting aggregation determines which fault(s) are most likely indicated by the plurality of conclusions, taken into account the dependency of the device data used to generate the conclusions. | |
