On the effect of input filtering and fast adaptation in model reference adaptive control

Roméo Ortega 1
1 Division Systèmes - L2S
L2S - Laboratoire des signaux et systèmes : 1289
Abstract : In recent years we have witnessed the publication in various control and applications journals of some papers where it is suggested to add to the standard model reference adaptive controller an input filter and to use high adaptation gains. It has been claimed that these modifications improve the performance of the system. The purpose of this brief note is to discuss these claims. A key contribution of the paper is the proof that parameter adaptation "freezes" as the adaptation gain goes to infinity-effectively stopping the stabilization (or performance improvement) mechanism due to adaptation.
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https://hal-supelec.archives-ouvertes.fr/hal-00929875
Contributor : Myriam Baverel <>
Submitted on : Tuesday, January 14, 2014 - 9:57:36 AM
Last modification on : Thursday, April 26, 2018 - 2:18:48 PM

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Roméo Ortega. On the effect of input filtering and fast adaptation in model reference adaptive control. 2013 IEEE American Control Conference ACC, Jun 2013, Washington, United States. pp.3350 - 3355, ⟨10.1109/acc.2013.6580349 ⟩. ⟨hal-00929875⟩

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