• DocumentCode
    312844
  • Title

    Robust, fragile or optimal?

  • Author

    Keel, L.H. ; Bhattacharyya, S.P.

  • Author_Institution
    Center of Excellence in Inf. Syst., Tennessee State Univ., Nashville, TN, USA
  • Volume
    2
  • fYear
    1997
  • fDate
    4-6 Jun 1997
  • Firstpage
    1307
  • Abstract
    We show by examples that optimum and robust controllers, designed by using the H2, H∞, l1 and μ formulations, can produce extremely fragile controllers, in the sense that vanishingly small perturbations of the coefficients of the designed controller destabilize the closed loop control system. The examples show that this fragility also usually manifests itself as extremely poor gain and phase margins of the closed loop system
  • Keywords
    H∞ control; closed loop systems; control system synthesis; linear systems; robust control; μ design; H∞ design; H2 design; closed loop control system; fragile controllers; gain margins; l1 design; optimum controllers; phase margins; robust controllers; Algorithm design and analysis; Closed loop systems; Control systems; Hydrogen; Information systems; Robust control; Robust stability; Robustness; Transfer functions; Uncertainty;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    American Control Conference, 1997. Proceedings of the 1997
  • Conference_Location
    Albuquerque, NM
  • ISSN
    0743-1619
  • Print_ISBN
    0-7803-3832-4
  • Type

    conf

  • DOI
    10.1109/ACC.1997.609747
  • Filename
    609747
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=312844