Robust Tracking Performance Enhancement through Uncertainty Division

  1. Gil-Martínez, M. 2
  2. García-Sanz, M. 1
  1. 1 Universidad Pública de Navarra
    info

    Universidad Pública de Navarra

    Pamplona, España

    ROR https://ror.org/02z0cah89

  2. 2 Universidad de La Rioja
    info

    Universidad de La Rioja

    Logroño, España

    ROR https://ror.org/0553yr311

Book:
European Control Conference, ECC 2003

Publisher: Institute of Electrical and Electronics Engineers Inc.

ISBN: 978-395241737-9

Year of publication: 2003

Pages: 2109-2114

Type: Book chapter

SCOPUS: 2-s2.0-84949096816 GOOGLE SCHOLAR

Abstract

When the process uncertainty size increases, even linear minimum phase systems must sacrifice desirable aggressive feedback control benefits to avoid an excessive 'cost of feedback', while preserving the robust stability. With a suitable uncertainty division and a QFT controller-prefilter to command each uncertainty subset inside a controller-scheduler structure, it is possible to enhance the feedback tracking performance without an excessive bandwidth. To preserve the robust stability from any failure in the switching, each controller is designed to be stable in the whole uncertainty domain, and as accurate in command tracking as desired in its uncertainty subset. © 2003 EUCA.