Facing Diagnosis Reality - Model - Based Fault Tree Generation in Industrial Application

Computer diagnosis systems grounded on hand-crafted fault trees are widespread in industrial practice. Since the complexity of technical systems increases and innovation cycles get shorter, the need for systematic fault tree generation and maintenance arises. In this paper, the MAD system is introduced which generates fault trees based on models of technical devices. Since a fault tree can be generated automatically based on a device model, the cost for providing, modifying, and maintaining diagnosis equipment can be drastically reduced and quality management of diagnosis equipment can be facilitated. Furthermore, the cost of fault-tree-based fault identification can be reduced because model-generated fault trees can be optimized. MAD is specifically designed to facilitate its integration into existing service workflow. We have successfully evaluated the MAD system in cooperation with the German forklift manufacturer STILL GmbH Hamburg.