<abstract xml:lang="en" xmlns="http://www.w3.org/1999/xhtml"><p>The paper presents a new approach to the generation of test signals used in service diagnosis. The tests make it possible to isolate faults, which are isolable only if the system is brought into specific operating points. The basis for the test signal selection is a structure graph that represents the couplings among the external and internal signals of the system and the fault signals. Graph-theoretic methods are used to identify edges that disappear under certain operating conditions and prevent a fault from changing the system behavior at this operating point. These operating conditions are identified by validuals, which are indicators obtained during the graph-theoretic analysis. The test generation method is illustrated by a process engineering example.</p></abstract>

The paper presents a new approach to the generation of test signals used in service diagnosis. The tests make it possible to isolate faults, which are isolable only if the system is brought into specific operating points. The basis for the test signal selection is a structure graph that represents the couplings among the external and internal signals of the system and the fault signals. Graph-theoretic methods are used to identify edges that disappear under certain operating conditions and prevent a fault from changing the system behavior at this operating point. These operating conditions are identified by validuals, which are indicators obtained during the graph-theoretic analysis. The test generation method is illustrated by a process engineering example.

Test signal generation for service diagnosis based on local structural properties

Robert Bosch GmbH, Postfach 30 02 40, 70442 Stuttgart, Germany

Institute of Automation and Computer Control, Ruhr-Universität Bochum, Universitätsstrasse 150, 44780 Bochum, Germany

International Journal of Applied Mathematics and Computer Science

The paper presents a new approach to the generation of test signals used in service diagnosis. The tests make it possible to isolate faults, which are isolable...

Test signal generation for service diagnosis based on local structural properties

Published Online: Mar 22, 2012

Page range: 55 - 65

DOI: https://doi.org/10.2478/v10006-012-0004-y

Keywords
structural analysis, service diagnosis, active diagnosis, test generation

This content is open access.

Test signal generation for service diagnosis based on local structural properties

Published Online: Mar 22, 2012

Page range: 55 - 65

DOI: https://doi.org/10.2478/v10006-012-0004-y

Keywordsstructural analysis, service diagnosis, active diagnosis, test generation

This content is open access.

Keywords
structural analysis, service diagnosis, active diagnosis, test generation