Operational fault diagnosis of manufacturing systems
Hu, W., Starr, A., Leung, A. · University of Hertfordshire Research Archive (University of Hertfordshire) · 2003
Among all kinds of possible faults in a manufacturing system, operational faults occur most often (about 70%).Efficient diagnosis of these faults is critical for improving the availability and productivity of the manufacturing system.This paper presents a hierarchical diagnosis model based on fault tree analysis and two other diagnosis models respectively based on the logic and sequential control of manufacturing systems which are usually controlled by a Programmable Logical Controller (PLC).With these models working together, the operational faults of a manufacturing system can be diagnosed completely.The models have been successfully applied to a PLC controlled flexible manufacturing system and have achieved good results.