Double chaining approach for indirect monitoring of FMS under cyclic scheduling

The occurrence of failure in Flexible Manufacturing System can deeply modify its performances and its availability. In this context, the monitoring of FMS becomes an important issue, improving production time and minimizing unplanned costly breakdowns. We propose to develop an indirect monitoring by the analysis of product flows at the output of an FMS subjected to a 1-cyclic control. In order to determine the operating system failure that causes the decrease of process performance and the delay observed at the output of a system part, we propose a resolution mechanism based on fault tree analysis.