Are frequently subject to several kinds of random occurrences and perturbations, such as new job arrivals, machine breakdowns, employee’s sickness, jobs cancellation and due date and time processing changes, causing prepared schedules becoming easily outdated and unsuitable.
Published in Chapter:
Hybrid Meta-Heuristics Based System for Dynamic Scheduling
Ana Maria Madureira (Polytechnic Institute of Porto, Portugal)
Copyright: © 2009
|Pages: 7
DOI: 10.4018/978-1-59904-849-9.ch126
Abstract
The complexity of current computer systems has led the software engineering, distributed systems and management communities to look for inspiration in diverse fields, e.g. robotics, artificial intelligence or biology, to find new ways of designing and managing systems. Hybridization and combination of different approaches seems to be a promising research field of computational intelligence focusing on the development of the next generation of intelligent systems. A manufacturing system has a natural dynamic nature observed through several kinds of random occurrences and perturbations on working conditions and requirements over time. For this kind of environment it is important the ability to efficient and effectively adapt, on a continuous basis, existing schedules according to the referred disturbances, keeping performance levels. The application of Meta-Heuristics to the resolution of this class of dynamic scheduling problems seems really promising. In this article, we propose a hybrid Meta-Heuristic based approach for complex scheduling with several manufacturing and assembly operations, in dynamic Extended Job-Shop environments. Some self-adaptation mechanisms are proposed.