© 1991

Interactive System Identification: Prospects and Pitfalls


Part of the Communications and Control Engineering Series book series (CCE)

Table of contents

  1. Front Matter
    Pages I-XII
  2. Torsten Bohlin
    Pages 1-17
  3. Torsten Bohlin
    Pages 18-41
  4. Torsten Bohlin
    Pages 42-74
  5. Torsten Bohlin
    Pages 75-110
  6. Torsten Bohlin
    Pages 111-173
  7. Torsten Bohlin
    Pages 174-219
  8. Torsten Bohlin
    Pages 220-243
  9. Torsten Bohlin
    Pages 244-290
  10. Torsten Bohlin
    Pages 291-329
  11. Torsten Bohlin
    Pages 330-341
  12. Back Matter
    Pages 342-365

About this book


The craft of designing mathematical models of dynamic objects offers a large number of methods to solve subproblems in the design, typically parameter estimation, order determination, validation, model reduc­ tion, analysis of identifiability, sensi tivi ty and accuracy. There is also a substantial amount of process identification software available. A typi­ cal 'identification package' consists of program modules that implement selections of solution methods, coordinated by supervising programs, communication, and presentation handling file administration, operator of results. It is to be run 'interactively', typically on a designer's 'work station' . However, it is generally not obvious how to do that. Using interactive identification packages necessarily leaves to the user to decide on quite a number of specifications, including which model structure to use, which subproblems to be solved in each particular case, and in what or­ der. The designer is faced with the task of setting up cases on the work station, based on apriori knowledge about the actual physical object, the experiment conditions, and the purpose of the identification. In doing so, he/she will have to cope with two basic difficulties: 1) The com­ puter will be unable to solve most of the tentative identification cases, so the latter will first have to be form11lated in a way the computer can handle, and, worse, 2) even in cases where the computer can actually produce a model, the latter will not necessarily be valid for the intended purpose.


Identification Identifikation Interactive Systems Interaktives System Regelung computer control engineering modeling software system system identification

Authors and affiliations

  1. 1.Automatic ControlRoyal Institute of TechnologyStockholmSweden

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