Robust Control pp 179-185 | Cite as

A study on a variable adaptive law

  • Seiichi Shin
  • Toshiyuki Kitamori
Conference paper
Part of the Lecture Notes in Control and Information Sciences book series (LNCIS, volume 183)


This paper presents a variable adaptive law, which is robust to bounded disturbances. Combining with the dead zone, the proposing adaptive law uses a sort of the σ-modified adaptive law in the small estimation error region. Viability of the adaptive law, in comparing with the dead zone type adaptive law, is shown by theoretical analysis and a simple numerical simulation.


Lyapunov Function Safety Margin Adaptive System Control Object Dead Zone 
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Copyright information

© Springer-Verlag 1992

Authors and Affiliations

  • Seiichi Shin
    • 1
  • Toshiyuki Kitamori
    • 2
  1. 1.Institute of information Sciences and ElectronicsUniversity of TsukubaTsukubaJapan
  2. 2.Department of Mathematical Engineering and Information Physics Faculty of EngineeringUniversity of TokyoTokyoJapan

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