Operational fault diagnosis of manufacturing systems
نویسنده
چکیده
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.
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