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Quantitative Feedback Theory Revisited

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Dynamics and Control

Abstract

This paper reexamines Horowitz's original formulation of the Quantitative Feedback Theory (QFT) problem in the light of recent developments in robust control. A simple proof of optimality of the loop transmission function in the sense of Horowitz is developed. A difficulty with Horowitz's formulation at high frequencies is corrected.

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Authors and Affiliations

  1. Mechanical Engineering Department, Southern Methodist University, PO Box 750337, Dallas, TX, 75275-0337, USA

    Osita D. I. Nwokhah & Eloi Taha

  2. Mechanical Engineering Department, Southern Methodist University, PO Box 750337, Dallas, TX, 75275-0337, USA

    Gemunu S. Happawana

Authors
  1. Osita D. I. Nwokhah
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  2. Gemunu S. Happawana
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  3. Eloi Taha
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Nwokhah, O.D.I., Happawana, G.S. & Taha, E. Quantitative Feedback Theory Revisited. Dynamics and Control 11, 71–80 (2001). https://doi.org/10.1023/A:1017960203146

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  • DOI: https://doi.org/10.1023/A:1017960203146

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