Author(s)

R. Bertin & M. Larrechea

Abstract

Technical diagnosis expert system: An example of knowledge acquisition method R. Bertin & M. Larrechea LAP/GRAI Laboratoire d'Automatique et de Productique, 351 cours de la liberation, 33405 Talence Cedex, France ABSTRACT We propose in this paper a method for knowledge acquisition. The way of formalizing knowledge is given in details and a method : Graixpertise is presented. This method analyses the physical system and allows to design a structure to receive knowledge. The method is characterized by two elements : the tools and the processes. We give an application of this method to industrial situations in the domain of aircraft maintenance. A prototype Hyperdiagnostic has been developed to apply this method. 1 - INTRODUCTION Maintenance is a difficult problem for firms. Generally speaking the maintenance is concerned with numerous and various systems. For each of them there are only few troubleshooting experts. Then two problems appear : • people

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