Output feedback stabilization of nonlinear dual-rate sampled-data systems via an approximate discrete-time model

Ustunturk A.

AUTOMATICA, cilt.48, sa.8, ss.1796-1802, 2012 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 48 Sayı: 8
  • Basım Tarihi: 2012
  • Doi Numarası: 10.1016/j.automatica.2012.05.044
  • Dergi Adı: AUTOMATICA
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1796-1802
  • Anahtar Kelimeler: Controller design, Output feedback, Stabilization, Sampled data, Nonlinear, Dual rate, TO-STATE STABILIZATION, FRAMEWORK, STABILITY
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The problem of output feedback stabilization of nonlinear sampled-data control systems is considered under the low measurement rate constraint. A dual-rate control scheme is proposed that utilizes a numerical integration scheme to approximately predict the missing output values between measured output samples. It is shown that if an observer-based output feedback controller that semiglobally practically asymptotically (SPA) stabilizes the single-rate sampled-data plant model is given, then the SPA stability property will be preserved for the closed-loop dual-rate sampled-data system, on the basis of the proposed dual-rate control scheme under standard assumptions. A numerical example is given to illustrate the design method. (C) 2012 Elsevier Ltd. All rights reserved.