Modeling and performance analysis of asynchronous production lines without buffers
Asynchronous production lines without buffers are composed of multiple machines with different cycle times,widely applied in various manufacturing fields,such as automotive and aero-engine manufacturing.The two features of asynchronization and no buffer impact the characterization of the state space,and consequently affecting the performance modeling of the production lines.The impact of machine random failures and cycle differences on the system performance was analyzed to study the modeling and performance analysis of asynchronous production lines.The activities of machines and jobs in the production line were modeled by an activity network.An analytical model for performance analysis was es-tablished to describe the functional relationship between completion time and random variables,including holding time,starvation time and blockage time.Furthermore,the correlation between performance measures and random variables was quantitatively analyzed,and an iterative algorithm was adopted to evaluate performance measures,such as production rate,probabilities of machine starvation and blockage.Finally,the analytical model was validated by simulation experiments.
production lines without bufferscycle differencesproduction line modelinganalytical methodper-formance analysis
万方数据
维普
