Simulation analysis of a pull-push system for an electronic assembly line

Abstract

This study deals with simulation modeling and analysis of an electronic assembly line. Weekly scheduled demands for printed circuit boards (PCBs) are met from its Final Board Inventory (FBI). The demand triggers production at the first station by signaling for replenishment of a quantity equal to the demand. The assembly operations themselves are performed using a push system of production control. The objective of the simulation analysis is to determine the minimum number of batches in the system, including the Work-In-Process (WIP) and Finished Board Inventory, to meet a certain percentage of demand on time. The assembly line has enough capacity to meet the annual demand, but random fluctuations in assembly operations disturb the weekly production schedule. Therefore, the aim is to meet weekly scheduled demand on time to avoid additional cost of reshipments.