New simple filtered-x algorithm for parallel Hammerstein systems

Tomohiro Ohno, Akira Sano, Hiromitsu Ohmori

研究成果: Conference contribution

抄録

A new nonlinear filtered-x algorithm is proposed for adaptive feedforward compensation for parallel Hammerstein systems, which has many applications such as nonlinear active noise control and predistortion for nonlinear high power amplifiers. To attenuate the compensation error, a virtual error and prediction error are introduced and forced into zero by adjusting three nonlinear adaptive filters in an on-line manner. It is shown that the convergence of the compensation error to zero can be assured by forcing the prediction error and virtual error to zero separately. The proposed method can adjust the adaptive feedforward controller by using the newly introduced virtual error, unlike the ordinary nonlinear filtered-x algorithm using the compensation error directly. Furthermore, the PE property of the reference signal is not needed, which is a great advantage of the proposed direct approach. Its effectiveness is examined and clarified in comparison with an ordinary nonlinear filtered-x algorithm in numerical simulations.

本文言語English
ホスト出版物のタイトルICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings
ページ4503-4507
ページ数5
出版ステータスPublished - 2009 12月 1
イベントICROS-SICE International Joint Conference 2009, ICCAS-SICE 2009 - Fukuoka, Japan
継続期間: 2009 8月 182009 8月 21

出版物シリーズ

名前ICCAS-SICE 2009 - ICROS-SICE International Joint Conference 2009, Proceedings

Other

OtherICROS-SICE International Joint Conference 2009, ICCAS-SICE 2009
国/地域Japan
CityFukuoka
Period09/8/1809/8/21

ASJC Scopus subject areas

  • 情報システム
  • 制御およびシステム工学
  • 産業および生産工学

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