Object-oriented model of an open communication architecture for flexible manufacturing control

  • Th. Borangiu
  • L. -M. Tomas Balibrea
  • L. A. Contreras Gonzales
  • Cr. Nis
  • M. Manu
3 Engineering Systems
Part of the Lecture Notes in Computer Science book series (LNCS, volume 1333)

Abstract

From the functional point of view, it is considered that the model of a manufacturing system consists of four layers: Machine, Data Acquisition and Control, Communication, and Aggregate Application. In modeling these layers, two important initial premises have been considered which will further allow for a modular, expandable structuring of any particular user-defined application. First, the top-down decomposition strategy is used: the global FMCell architecture and aggregate application are first defined as abstract, high-level objects and then decomposed into child objects during the design steps. The multiple abstraction levels for modeling the cell resources and the Computer Manufacturing Control (CMC) components are used: modeling at part level. modeling at component level and modeling at application level. In order to derive the generic Object-Oriented model of the FMCell communication system, there have been defined an ensemble of CLASS Trees or hierarchies and a Virtual Node Tree. The ensemble of CLASS Trees defines structures and models of the manufacturing environment objects according to relationships identical to the INCLUDE hierarchy. The Virtual Node Tree (VNT) concept is used to model the modular, open-architecture of the communication layer for inter-device connection in the manufacturing environment. The class objects are: “Node” and “Level”.The present paper exemplifies these OO modeling concepts by structuring the communication system of a three-station FMCell which contains two different CNC machine tools tended by one Industrial Robot, one storage and assembly workstation tended by a second Industrial Robot, which is also feeding the final assemblies for integrated quality control to a vision-based CAQC workstation.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Adiga, S., “Object-Oriented Software for Manufacturing Systems”, Chapmann & Hall, 1993Google Scholar
  2. 2.
    Borangiu, Th., Manu, M., Tomas Balibrea, L.M., H.D. Puyosa Piña, “A Distributed Software System For Vision Based PCB Manufacturing with Integrated Quality Control”, Proceedings of the ESPRIT Integration in Manufacturing (IiM) Conference 1996, Galway, IrelandGoogle Scholar
  3. 3.
    Fabian, M., Lennartson B., “Distributed Objects for Real-Time Control Systems”, Proceedings of the 12th IFAC World Congress, Sydney, Australia, Dec 1993Google Scholar
  4. 4.
    Joshi, S., Smith, J. “Intelligent Control of Manufacturing Systems”, Intelligent Design and Manufacturing, John Wiley & Sons, Inc., 1992Google Scholar

Copyright information

© Springer-Verlag 1997

Authors and Affiliations

  • Th. Borangiu
    • 1
  • L. -M. Tomas Balibrea
    • 2
  • L. A. Contreras Gonzales
    • 2
  • Cr. Nis
    • 1
  • M. Manu
    • 1
  1. 1.Dept. of Computer Process ControlUniversity Politehnica of BucharestRomania
  2. 2.Group of Vision and RoboticsUniversity of MurciaCartagena (Murcia)Spain

Personalised recommendations