Accession Number:

ADA123783

Title:

Failure Detection and Location Method (FDLM).

Descriptive Note:

Doctoral thesis Jan 81-30 Sep 82,

Corporate Author:

MASSACHUSETTS INST OF TECH CAMBRIDGE MAN-MACHINE SYSTEMS LAB

Personal Author(s):

Report Date:

1982-09-30

Pagination or Media Count:

173.0

Abstract:

The computerized method developed in this thesis aids the operators of complex dynamic systems to detect failures and to locate the causes in real-time. This method is called Failure Detection and Location Method FDLM. Failures are detected when the differences between the measured systems power variables and their corresponding calculated model values are outside preset limits. The causes are located by disaggregating the model and utilizing the causal description of the resultant submodels. This method eliminates the necessity to preprogram the systems possible failure modes, but requires an efficient failure location procedure. System, sensor, and control input failures can be identified by FDLM. The display interfacing FDLM to the human operator was designed to minimize the rate of missings and false alarms as well as the operators reaction time. A simulation test of FDLM applied to a part of a ships engine demonstrates the advantages of the method. Author

Subject Categories:

  • Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE