Abstract
This paper describes the development of an on-line, real-time, scheduling method for a computer aided manufacturing system and relates one application example in LSI wafer fabrication factory. Features of the scheduling method are: (1) it is a dynamic, work-in-process scheduler based on job shop simulation techniques and a priority function having weighted decision factors, (2) it can automatically generate the optimum launching sequence of jobs on a machine, as soon as the system situation changes, (3) it is a multi-purpose scheduler in that it uses an objective function which is a linear combination of several decision factors which suits the system environment by modifying the coefficients that define the relative importance, (4) the complexity of the job shop configuration does not affect the size of scheduling problem.
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