Elsevier

Knowledge-Based Systems

Volume 4, Issue 3, September 1991, Pages 131-143
Knowledge-Based Systems

DEXT: an integrated knowledge-engineering environment for control-engineering applications

https://doi.org/10.1016/0950-7051(91)90002-JGet rights and content

Abstract

The paper presents dext, an integrated knowledge-engineering tool for control-engineering applications. First, the domain of control engineering has been analysed so that a few of the key requirements to be satisfied by the tool may be identified. A large number of software packages developed over the years for dealing with different aspects of control engineering constitute the primary knowledge base of an expert system for such applications. Unfortunately, these packages have been developed in different languages, and they differ in their performance with regard to computational efficiency and numerical stability. Hence, transparent access to a bank of such packages must be allowed, and such accesses must be independent of the language in which the packages are written. Apart from providing such an interface, the proposed tool must also support a variety of data types. A structured organization of the design information is also required, as the expert system may refer to such facts at different levels of abstraction. The structure of the rules and the facts is described in detail. The salient features of dext include the feature of transparent interfacing with the external packages, and enhancement of inferencing efficiency through the techniques of rule partitioning and intelligent backtracking.

References (17)

  • R. Davis et al.

    An overview of production systems

    machine Intell.

    (1977)
  • R. Fikes et al.

    The role of frame based representation in reasoning

    Commun. ACM

    (1985)
  • M. Minsky

    A framework for representing knowledge

  • Duda, R.O., Hart, P.E., Nilsson, N.J., Sutherland, G L ‘Semantic network representation in rule based inference...
  • J.S. Aikins

    A representation scheme using both frames and rules

  • T.P. Kehler et al.

    An application development system for expert systems

    Syst. Soft.

    (jan 1984)
  • M.J. Denham

    Design issues for CACSD systems

  • J.D. Birdwell

    Future directions in computer aided control system design software development

    IEEE Contr. Syst.

    (1983)
There are more references available in the full text version of this article.

Cited by (2)

View full text