HP Labs Technical Reports

Systems with Complex Material and Information Flow

Mujtaba, M. Shahid



Abstract: This paper describes work in modeling and simulating complex system interactions in a manufacturing enterprise considering organizational structure, information flows, and material flows. The purpose of the research is to estimate system performance measures for coordinating diverse activities such as Sales Forecasting, Order Processing, Production Planning, Material Requirements Planning, Material Procurement, Production and Distribution. pp The Object Oriented Programming (OOP) paradigm was used in combination with Discrete Event Simulation methods to build components for modeling and simulating Order to Ship (OTS) process to understand the time delays encountered by orders in the system before customers receive the shipments. Subsequently these components were found useful in the study of other problems, and evolved into the elements of a rudimentary Manufacturing Enterprise Model and its Simulator, on which OTS was one of many problems that could be analyzed. The Manufacturing Enterprise Model and Simulator provide a means for capturing the structure, knowledge, behavior, and information concepts in the manufacturing domain in a computer manipulable form, so that evolving models of the enterprise can be re-used to analyze different problems. pp The OOP paradigm facilitated two aspects of modeling and simulating complex systems: a) defining and representing the components and system structure, and b) enhancing discrete event simulation capabilities.

This report has been superceded by HPL-93-25.

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