U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Alert generation for trend performance analysis

Patent 6408259 Issued on June 18, 2002. Estimated Expiration Date: Icon_subject February 1, 2020. 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 References

Engine condition calculating device
Patent #: 4037782
Issued on: 07/26/1977
Inventor: Jackson

Reference system and method for diagnosing aircraft engine conditions
Patent #: 5018069
Issued on: 05/21/1991
Inventor: Pettigrew

Adaptive fast fuzzy clustering system
Patent #: 5263120
Issued on: 11/16/1993
Inventor: Bickel

System and method for measuring the operation of a device Patent #: 5406502
Issued on: 04/11/1995
Inventor: Haramaty, et al.

Inventors

Assignee

Application

No. 492685 filed on 02/01/2000

US Classes:

702/183, Diagnostic analysis701/29, Vehicle diagnosis or maintenance indication701/34, Detection of faulty sensor701/100, Gas turbine, compressor702/104, Sensor or transducer702/182, Performance or efficiency evaluation702/185Cause or fault identification

Examiners

Primary: Shah, Kamini
Assistant: Vo, Hieu T.

Attorney, Agent or Firm

International Class

G06F 011/00

Abstract

This invention provides an improved alert generation system and method for trend performance analysis. A multi-variate abnormal condition detector normalizes data obtained from a process and classifies the data in a multi-dimensional space defined for the variables in the process. The normalized data are classified into either a normal or abnormal class. An alert evaluator evaluates the data classified in the abnormal class and determines whether the data are a true alert or a false alert. In another embodiment, the multi-variate abnormal condition detector and alert evaluator are used in parallel with a trend performance analysis tool to validate alerts generated therefrom.

Other References

  • "Fuzzy K-Nearest Neighbor Algorithm" By J. Keller, Et Al, IEEE Trans. Syst. Man. Cybern, vol. SMC-15, No. 4, Jul./Aug. 1985, pp. 580-585
  • Sensa Technologies, Inc. Home Page, 1998, Internet Address: http://www.jenanet.com/index.htm, 28 pages
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  • "Novel Self-Learning Fault Detection System for Gas Turbine Engines" By VC Aptel, Et Al., Univ. of Sheffield, United Kingdom, ACCC International Conference, pp. 867-872
  • "Troubleshooting CFM 56-3 Engines for the Boeing 747 Using CBR and Data-Mining" by Richard Heider, CFM International, pp. 512-518
  • "Contextual Normalization Applied to Aircraft of Gas Turbine Engine Diagnosis" by P. Turney, Et Al, Journal of Appl. Intel. 3, 1993, pp. 109-129
  • "Reasoning Technology for the On-Board Maintenance System" by L. Reibling, Et Al, 1993 IEEE, pp. 930-936
  • "A Performance Assessment of a Case-Based Diagnostic System for Aircraft Malfunctions" by Karamouzis, Et Al, pp. 71-78
  • "Case-Based Approach to Handling Aircraft Malfunctions" by S. L. Karamouzis, Et Al, SPIE. vol. 1963, Appl. of Art. Intell. 1993, pp. 274-284
  • ETS MBR Application of Model-Based Reasoning to Gas Turbine Diagnostics by Winston, Et Al, 1995 Amer. Assoc. for Art Intell., pp. 67-7
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