Title :
Incorporating model-based reasoning in interactive maintenance aids
Author :
Sheppard, John W. ; Simpson, William R.
Author_Institution :
ARINC Res. Corp., Annapolis, MD, USA
Abstract :
An approach to generating an intelligent maintenance decision aid which is implemented in a tool called POINTER (portable interactive troubleshooter) is presented. The approach involves developing a mathematical model of the system to be tested, and then reasoning about the system to determine which test to choose and what one can deduce from the test outcome. The mathematical model is based on the flow of information through the system and the type of information available at each test point in the system. The corresponding test dependencies are then identified. This model is used to guide the fault-isolation process. In addition to the basic fault-isolation capability, the model provides tremendous flexibility for diagnosing a system. Failures can be hypothesized. Test choices can be overridden or delayed. Various optimization criteria can be specified. Each of these capabilities is discussed
Keywords :
automatic test equipment; decision support systems; fault location; interactive systems; knowledge based systems; maintenance engineering; optimisation; POINTER; fault-isolation; intelligent maintenance decision aid; interactive maintenance aids; mathematical model; military applications; model-based reasoning; optimization criteria; portable interactive troubleshooter; troubleshooting; Acquired immune deficiency syndrome; Art; Built-in self-test; Delay; Diagnostic expert systems; Fault trees; Inference mechanisms; Mathematical model; Performance evaluation; System testing;
Conference_Titel :
Aerospace and Electronics Conference, 1990. NAECON 1990., Proceedings of the IEEE 1990 National
Conference_Location :
Dayton, OH
DOI :
10.1109/NAECON.1990.112948
