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An infinite capacity planning system (ICPS) is developed for an integrated circuit packaging plant. ICPS consists of five modules: Work-In-Process (WIP) Pulling Module, Lot Release Module, Resource Selection Module, Workload Accumulation Module, and Workload Balance Module. WIP-Pulling Module pulls WIP from the end of the process route to meet the master production schedule (MPS). If WIP cannot meet the MPS requirement, Lot Release Module is executed to release new lots. Resource Selection Module facilitates a lot to select an appropriate resource at each operation step and calculate the lot's planned start time and planned finished time at each step. Workload Accumulation Module accumulates the workload of each machine and each jig on each day. Workload Balance Module balances the loading of machines and jigs by adjusting the lot's start time using these resources. Simulation is used to evaluate ICPS performance, and results show that ICPS can effectively and efficiently balance the workload of production resources. |
