Hamid Esmaili - Assisstant professor of industrial engineering group, Islamic Azad University North Tehran branch;
Matin Aleahmad - PhD Candidate of industrial engineering group, Islamic Azad University North Tehran branch;

The Six Sigma is a useful approach for the system in the way of cost reduction and increasing the quality and performance of the system. The six sigma approach has 5 phases: Define, measure, analyze, improve and Control. In the second phase, measurement the rolled throughput yields (RTY) method use for evaluating the performance of working stations, this method have some difficulties in evaluating the performance more accurate, in this article the researchers presented the new method for evaluating the system performance based on High-Level Petri Net method, this method is the new generation of formal petri nets that use for modelling, analyzing and controlling the complex, time-based systems that have concurrent behavior. The presented model shown the accurate calculation in performance evaluation, the better graphical presentation and better output measurement for the system.

Rolled Throughput Yield, High-Level Petri Net, Performance, measurement, Product, Rework, Evaluation