Intelligent system for fault diagnosis in agricultural tractor mechanical subsystems
Abstract
The aim of this Thesis is the development of a prototype intelligent fault - failure diagnosis system (design and implementation). Both the development and confirmation were performed in an agricultural tractor mechanical gearbox. The system was based on this particular idea: When fault occurs at a single bearing of a gearbox, this leads to the replacement of all of its bearings even though they are still operational. This way the repair costs raise to an unreasonably high level. This intelligent system was developed to diagnose quickly and with a great accuracy faults and failures at any of the agricultural tractor mechanical subsystem. It is also able to diagnose at which bearing exactly the fault occurs, so that the repair of it is selective and the maintenance costs reduced. The system is based on the performance of either one or two Bayesian Multilayer Perceptron Neural Network with Automatic Relevance Determination, MLP-ARD, which combine data from monoaxial and triaxial accelero ...
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