Issue No. 02 - March/April (1986 vol. 3)
W.R. Simpson , ARINC Research Corporation
C.S. Dowling , ARINC Research Corporation
The weighted repair assistance program learning extension, or WRAPLE, is a maintenance aid to help technicians isolate faults?anecessary step in system repair. We derived the fault isolation strategies used in WRAPLE from a knowledge-based information-theoreticapproach that incorporates fixed experience. This approach contrasts with fault isolation strategies, which are developedfrom estimates and remain fixed. A fault isolation strategy that ?learned? would adapt to field conditions and change on thebasis of actual failures and use of maintenance resources, permitting more efficient maintenance and reducing mean time torepair. In this article, we describe WRAPLE and the learning algorithms by which it modifies its output. We also present anexample of a typical system to illustrate the technique.
W. Simpson and C. Dowling, "WRAPLE: The Weighted Repair Assistance Program Learning Extension," in IEEE Design & Test of Computers, vol. 3, no. , pp. 66-73, 1986.