IMPROVING. OVERALL EQUIPMENT EFFECTIVENESS AND UTILIZATION THROUGH REAL TIME APPLICATION AND APC

Abstract

This report presents detailed analysis for subsystem algorithm, strategy formulation for Overall Equipment Effectiveness (OEE) improvement and OEE application software module for efficient equipment utilization. The main practical implication of this module is its decision support capability that is often missing in current OEE improvement systems. The algorithm which factors a manufacturing system into its constituent subsystems is solved using graph theory methods by extracting equipment connectivity information and representing the connections as an adjacency matrix in a manufacturing system. Subsystems are recognized using the developed subsystem recognition algorithm and the productivity measures are calculated using standard formulae through which equipment level matrix can be protracted to the system level. Attempt has been made for interconnectivity of these subsystems with algorithm based approach to recognize these interconnected subsystems. For efficient equipment utilization and OEE application, bottleneck equipment identification and multi equipment-multi performance measures are analyzed. Interpretation of OEE as a measure of equipment efficiency using tool speed consideration, time loss categorization, equipment state transitions and variables selection through numerical analysis for an industrial problem has been done. Further, results are discussed and future work has been outlined.