Finite-Spectrum Assignment for Time-Delay Systems

  • Qing-Guo Wang
  • Tong Heng Lee
  • Kok Kiong Tan

Part of the Lecture Notes in Control and Information Sciences book series (LNCIS, volume 239)

Table of contents

  1. Front Matter
    Pages i-viii
  2. Qing-Guo Wang, Tong Heng Lee, Kok Kiong Tan
    Pages 1-6
  3. Qing-Guo Wang, Tong Heng Lee, Kok Kiong Tan
    Pages 7-25
  4. Qing-Guo Wang, Tong Heng Lee, Kok Kiong Tan
    Pages 26-72
  5. Qing-Guo Wang, Tong Heng Lee, Kok Kiong Tan
    Pages 73-98
  6. Qing-Guo Wang, Tong Heng Lee, Kok Kiong Tan
    Pages 99-111
  7. Back Matter
    Pages 112-121

About this book


The presence of considerable time delays in many industrial processes is well recognized and achievable performances of conventional unity feedback control systems are degraded if a process has a relatively large time delay compared to its time constants. In this case, dead time compensation is necessary in order to enhance the performances. The most popular scheme for such compensation is the Smith Predictor, but it is unsuitable for unstable or lightly damped processes because the compensated closed-loop system always contains the process poles themselves. An alternative scheme for delay elimination from the closed-loop is the finite spectrum assignment (FSA) strategy and it can arbitrarily assign the closed-loop spectrum. One may note that the Smith­ Predictor Control can be found in delay systems control books and many process control books, but the FSA control is rarely included in these books. It is therefore timely and desirable to fill this gap by writing a book which gives a comprehensive treatment of the FSA approach. This is useful and worthwhile since the FSA provides not only an alternative way but also certain advantages over the Smith-Predictor. The book presents the state-of-the-art of the finite spectrum assignment for time-delay systems in frequency domain. It mainly contains those works carried out recently by the authors in this field. Most of them have been published and others are awaiting publication. They are assembled together and reorganized in such a way that the presentation is logical, smooth and systematic.


automation control control system simulation stability system identification

Authors and affiliations

  • Qing-Guo Wang
    • 1
  • Tong Heng Lee
    • 1
  • Kok Kiong Tan
    • 1
  1. 1.Department of Electrical EngineeringThe National University of SingaporeSingapore

Bibliographic information

  • DOI
  • Copyright Information Springer-Verlag London 1999
  • Publisher Name Springer, London
  • eBook Packages Springer Book Archive
  • Print ISBN 978-1-85233-065-1
  • Online ISBN 978-1-84628-531-8
  • Series Print ISSN 0170-8643
  • Series Online ISSN 1610-7411
  • Buy this book on publisher's site
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