Author: Sridhar SubramanyamPublisher:
ISBN:
Category : Expert systems (Computer science)
Languages : en
Pages : 184
Book Description
An Expert Systems Approach to Scheduling in Flexible Manufacturing Systems
Author: Sridhar SubramanyamPublisher:
ISBN:
Category : Expert systems (Computer science)
Languages : en
Pages : 184
Book Description
A Hybrid Artificial Neural Networks and Knowledge-based Expert Systems Approach to Flexible Manufacturing System Scheduling
Author: Luis C. RabeloPublisher:
ISBN:
Category : Computer integrated manufacturing systems
Languages : en
Pages : 187
Book Description
"Flexible manufacturing system (FMS) scheduling is a complex problem in nature that leads to a high level of uncertainty due to limited feasible solutions in an extensive search space. Heuristics involving dispatching rules have been widely utilized to obtain good solutions. This strategy has been recently enhanced by FMS scheduling researchers using knowledge-based expert systems as means of resolving scheduling problems. Unfortunately, the knowledge-based expert systems (KBESs) developed are limited in real-time performance due to cracks in their encoded knowledge or lack of adequate plans to address the changing environment. A framework is developed displaying the capabilities of automatic learning and self-improvement, providing the necessary adaptive scheme to respond to the dynamic nature of flexible manufacturing systems. This proposed framework uses a hybrid architecture that integrates artificial neural networks and knowledge-based expert systems to generate solutions for the real time scheduling of flexible manufacturing systems. In this framework, the artificial neural networks perform pattern recognition and, due to their inherent characteristics, support the implementation of automated knowledge acquisition and refinement strategies through a feedback mechanism. They enable the system to recognize patterns in the tasks to be solved in order to select the best scheduling rule according to different criteria. The knowledge-based expert systems, on the other hand, drive the inference strategy and interpret the constraints and restrictions imposed by the upper levels of the control hierarchy of the flexible manufacturing system. The level of self-organization thus achieved provides a system architecture with a higher probability of success than traditional approaches"--Abstract, leaf iii.
An expert system approach for the control and scheduling of flexible manufacturing cells
Author: Si-Yong WuAn Expert System for Flexible Manufacturing System Scheduling
Author: JooHee KimPublisher:
ISBN:
Category : Expert systems (Computer science)
Languages : en
Pages : 284
Book Description
Expert systems have been suggested as a solution for difficult problems, including FMS scheduling. As one of the aspects of artificial intelligence (AI), expert systems have achieved considerable success in recent years in medical science, chemistry, and engineering. However, building an expert system is a difficult task, the most crucial problem being that of knowledge acquisition. Obtaining expert knowledge is a difficult and time-consuming process. Moreover, since FMSs represent a relatively new technology, experts capable of FMS planning and scheduling are generally unavailable. One possible solution for this problem is to train a non-expert operator, allow the operator to practice with a simulated system and accumulate experience, and then build an expert system using the newly acquired knowledge. To this end, an interactive graphic simulation method for the effective utilization of human pattern-recognition ability is proposed. Once the required knowledge is elicited through an interactive graphic simulation model, an expert system is developed from acquired rules. The method includes an FMS simulation model, a Gantt chart-based schedule, a simulator, an expert system, and a human operator. First, an initial schedule is simulated, utilizing the expert system to determine the loading sequence and a dispatching rule. The schedule is then updated by an expert system and/or human operator with the capability of maximizing schedule objectives, while at the same time saving reasons for changes as new production rules, which are subsequently generalized and added to the expert system knowledge base. The system is implemented in Smalltalk/V on an IBM PC/AT and the implementation is based upon a detailed sample problem. It was determined that a human operator can obtain near-optimum schedules in short time periods, at the same time gaining valuable experience in use of the scheduling process. Furthermore, it was determined that this model can be a useful training device for inexperienced operators and a time-saving decision-making aid for expert schedulers.
A Hybrid Artificial Neural Networks and Knowledge-based Expert Systems Approach to Flexible Manufacturing System Scheduling
Author: Luis C. RabeloFlexible Manufacturing Systems: Recent Developments
Author: A. RaoufPublisher: Elsevier
ISBN: 0080531695
Category : Technology & Engineering
Languages : en
Pages : 325
Book Description
Flexible Manufacturing Systems (FMS) involve substituting machines capable of performing a wide and redefinable variety of tasks for machines dedicated to the performance of specific tasks. FMS can also be programmed to handle new products, thus extending the machines' life cycles. Thus they represent a change from "standardized goods produced by customized machines" to "customized goods produced by standardized machines". This volume contains new and updated material in this field, and will be of great interest to researchers, managers and students concerned with problems related to flexible manufacturing systems.
Flexible Manufacturing Systems
Author: Andrew KusiakPublisher: North Holland
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 424
Book Description
An Expert System Approach for the Control and Scheduling of Flexible Manufacturing Cells
Author: Szu-Yung David WuPublisher:
ISBN:
Category : Expert systems (Computer science)
Languages : en
Pages : 222
Book Description
Flexible Manufacturing Systems
Author: Kathryn E. SteckePublisher:
ISBN:
Category : Assembling machines
Languages : en
Pages : 408
Book Description
Handbook of Expert Systems Applications in Manufacturing Structures and rules
Author: A. MitalPublisher: Springer Science & Business Media
ISBN: 9401107033
Category : Science
Languages : en
Pages : 412
Book Description
This book is aimed at both researchers and practitioners, and provides a collection of expert systems in manufacturing and production engineering along with their knowledge base and rules. We believe that inclusion of the knowledge base and associated rules is essential if practitioners are to derive full benefit from these expert systems. This unique book is the result of our belief and the efforts of our distinguished colleagues who subscribe to this philosophy. A total of 15 different expert systems are included in this book. These expert systems are preceded by an introductory chapter written by Kuo, Preface XVll Mital and Anand. The expert system rules are included on a floppy disk in ASCII and can be easily accessed. These rules and the description of the expert system's structure should assist the users in customizing these systems. Overall, the expert systems included in this volume cover a fairly wide variety of manufacturing and production engineering topics.