Modeling of control loop in production sheduling and inventory level control process

Performance of manufacturing organization depends on production scheduling which is an essential part of the management of production systems. Effective scheduling can lead to performance those results in meeting the company's customer service goals, and reducing work-in-process inventories (Wiers, 1997). Objectives of production control can be graphically represented over time in diagrams: inventory, lead time, utilization, input orders and output of production process. In this paper, the fact that the input and output amount of work coming from released orders of one product are not equal in every period, requires a technique to balance input against output continuously, and to establish a control loop.