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Neural network system and method for factory floor scheduling

Patent 5432887 Issued on July 11, 1995. Estimated Expiration Date: Icon_subject March 16, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

Resource allocation method in a computer system
Patent #: 4727487
Issued on: 02/23/1988
Inventor: Masui ,   et al.

Expert system scheduler
Patent #: 5040123
Issued on: 08/13/1991
Inventor: Barber, et al.

Enhanced neural network shell for application programs
Patent #: 5235673
Issued on: 08/10/1993
Inventor: Austvold, et al.

Process control method and system for performing control of a controlled system by use of a neural network Patent #: 5311421
Issued on: 05/10/1994
Inventor: Nomura, et al.

Inventor

Assignee

Application

No. 031954 filed on 03/16/1993

US Classes:

706/19Constraint optimization problem solving

Examiners

Primary: MacDonald, Allen R.
Assistant: Shapiro, Stuart B.

Attorney, Agent or Firm

International Class

G06F 015/18

Abstract

Methods are developed on a digital computer for performing work order scheduling activity in a dynamic factory floor environment, in a manner which enables scheduling heuristic knowledge from a scheduler to be encoded through an adaptive learning process, thus eliminating the need to define these rules explicitly. A sequential assignment paradigm incrementally builds up a final schedule from a partial schedule, assigning each work order to appropriate resources in turns, taking advantage of the parallel processing capability of neural networks by selecting the most appropriate resource combination (i.e. schedule generation) for each work order under simultaneous interaction of multiple scheduling constraints.

Other References

  • Rabelo et al, "Adaptive Scheduling and Control Using ANN and Expert Systems for a Hierarchical/Distributed FMS Architecture", Proc of Rensseloer's Int'l Conf on CIM, May 21-23 1990, pp. 538-545
  • Zhang et al, "Solving Job-Shop Scheduling Problem with Priority Using Neural Network", 1991 IEEE Int'l Joint Conf on Neural Networks, Nov. 18-21 1991, pp. 1361-1366
  • Foo et al, "Stochastic Neural Networks for Solving Job Shop Scheduling: Part I Problem Representation", IEEE Int'l Conf on Neural Networks, Jul. 24-27 1988, pp. 275-282
  • Ghryssolouris et al, "The Use of Neural Networks in Determining Operational Policies for Manufacturing Systems", pp. 166-175
  • Stottler et al, "Automatic Translation from an Expert System to a Neural Network Representation", Int'l Joint Conf on Neural Networks, Jun. 7-11 1992 pp. 13-20 vol. 1
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  • "Scaling Neural network for Job-Shop Scheduling", Zhou et al, Abstract Paper of Dept. of Energy and Transportation
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  • "Stochastic Neural Networks for Solving Job-Shop Scheduling: Part 1. Problem Presentation", Foo et al., University of S. Carolina Abstract Paper
  • Job Shop Scheduling by Simulated Annealing, paper by Peter J. M. Van Laarhoven Centre for Quantitative Methods, Nederlandse Philips
  • A Goal Programming Network for Mixed Integer Linear Programming: A Case Study for the Job-Shop Scheduling Problem, Int. Jrnl of Neural Systems, 2:3, 201-209
  • A Timetable Scheduling Using Neural Networks with Parallel Implementation on Transputers, Lim et al., Inst of Systems Science
  • The Use of Neural Networks in Determining Operational Policies for Manufacturing Systems, Ghryssolouris et al., pp. 166-175
  • Scheduling for Minimizing Total Actual Flow Time by Neural Networks Arizono et al., Int. Jrn. Prod. Res., 1992, vol. 30, No. 3 pp. 503-51
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