Modeller af komplicerede systemer

J. Mortensen

Research output: PhD thesis

Abstract

This thesis, "Modeller af komplicerede systemer", represents part of the requirements for the Danish Ph.D.degree. Assisting professor John Nørgaard-Nielsen, M.Sc.E.E.Ph.D. has been principal supervisor and professor Morten Lind, M.Sc.E.E.Ph.D. has been assisting supervisor. The thesis is concerned with conceptual modeling in relation to process control. It´s purpose is to present classify and exemplify the use of a set of qualitative model types. Such model types are useful in the early phase of modeling, where no structured methods are at hand. Although the models are general in character, this thesis emphasizes their use in relation to technical systems. All the presented models, with the exception of the types presented in chapter 2, are non-theoretical non-formal conceptual network models. Two new model types are presented: 1) The System-Environment model, which describes the environments interaction with the system (chapter 5). 2) The extended Input-Parameter-Output model, which describes subsystems interaction with the environment as well as with other subsystems (chapter 6). An implementation of a causal model in an expert system is made, and process-operator problems are considered in a modeling perspective.
Original languageDanish
Publisher
Print ISBNsxxxxxxxxxx
Publication statusPublished - 1991

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