Manufacturing system simulation for evaluation of productivity and energy consumption

Industries need to concurrently evaluate productivity and energy consumption when designing and improving manufacturing systems. Manufacturing system simulations to evaluate productivity have often been used. However, manufacturing system simulations to concurrently evaluate productivity and energy consumption have not been proposed. The purpose of our research is to establish a system for concurrent evaluation of productivity and energy consumption in a manufacturing system simulation. First, in this study, necessary items and requirements to evaluate productivity and energy consumption are analysed. Secondly, a prior evaluation system considering the necessary items and the requirements is proposed. A state transition model for facilities, a simulation system and a visualization system are proposed to realize the prior evaluation system. Finally, case studies for a small-scale machining line and a middle-scale semiconductor manufacturing line are carried out to confirm the efficiency of our proposed prior evaluation system.