Fault diagnostic system incorporating behavior models
First Claim
Patent Images
1. A fault diagnostic system for a unit under test, characterized by:
- a plurality of model data bases for modeling and providing unit under test behavior data including first model data bases for modeling and providing unit under test parts connectivity data, second model data bases for modeling and providing unit under test parts attributes data, and third model data bases for modeling and providing unit under test behavior, failure modes and effects analysis, and functional data;
means bidirectionally connected to the plurality of model data bases for receiving the data therefrom and for converting the received data into a predetermined context and format, and for transmitting the converted data to the plurality of model data bases;
a model bididrectionally connected to the converting means and receiving the converted data therefrom for modeling and providing failure modes and effects analysis data and for transmitting said data to the converting means;
means bidirectionally connected to the converting means and to the failure modes and effects analysis data means and receiving the converted data and the failure modes and effects analysis data for providing modifying data, and for transmitting the modifying data to the converting means and to the failure modes and effects analysis data means; and
means bidirectionally connected to the converting means and to the modifying data means and receiving the converted data and the modifying data for modeling both good and faulty performance of the unit under test and for providing corresponding data, and for transmitting the corresponding data to the converting means and to the modifying data means.
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Abstract
A fault diagnostic system for a unit under test is disclosed which features behavior models for incorporating design knowledge of the unit under test into the system so as to implement a specification-based diagnostic approach while reducing the number of diagnostic tests. The arrangement is such that the featured diagnostic capabilities can be used with automatic test equipment or test instrumentation, and may be used to provide test programs for the automatic test equipment.
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Citations
10 Claims
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1. A fault diagnostic system for a unit under test, characterized by:
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a plurality of model data bases for modeling and providing unit under test behavior data including first model data bases for modeling and providing unit under test parts connectivity data, second model data bases for modeling and providing unit under test parts attributes data, and third model data bases for modeling and providing unit under test behavior, failure modes and effects analysis, and functional data; means bidirectionally connected to the plurality of model data bases for receiving the data therefrom and for converting the received data into a predetermined context and format, and for transmitting the converted data to the plurality of model data bases; a model bididrectionally connected to the converting means and receiving the converted data therefrom for modeling and providing failure modes and effects analysis data and for transmitting said data to the converting means; means bidirectionally connected to the converting means and to the failure modes and effects analysis data means and receiving the converted data and the failure modes and effects analysis data for providing modifying data, and for transmitting the modifying data to the converting means and to the failure modes and effects analysis data means; and means bidirectionally connected to the converting means and to the modifying data means and receiving the converted data and the modifying data for modeling both good and faulty performance of the unit under test and for providing corresponding data, and for transmitting the corresponding data to the converting means and to the modifying data means. - View Dependent Claims (2, 3, 4, 6, 8, 10)
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5. means bidirectionally connected to the means for modeling and providing other unit under test behavior data for receiving said unit under test behavior data for providing test execution data, and for transmitting said test execution data to the means for modeling and providing other unit under test behavior data;
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means bidirectionally connected to the test execution data means for receiving said test execution data for providing test parameters, and for transmitting said test parameters to the test execution data means; and test instrumentation bidirectionally connected to the test execution data means and to the unit under test for providing data for testing said unit commensurate with said test parameters and for transmitting said data to the test execution means, and said unit under test responding to the testing data for transmitting data to the test instrumentation. - View Dependent Claims (7, 9)
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Specification