Stabilization for multirate sampled-data control systems

멀티레이트 표본 데이타 제어 시스템의 안정화

  • Lee, Sang-Jeong (Dept. of Electronic Engineering, Chungnam National University) ;
  • Kim, Young-Baek (Dept. of Electronic Engineering, Chungnam National University)
  • 이상정 (충남대학교 전자공학과) ;
  • 김영백 (충남대학교 전자공학과, 국방과학연구소)
  • Published : 1996.06.01


This paper proposes a stabilizing controller for the multirate sampled-data systems which have a periodic output measurement scheme. A sufficient condition for maintaining observability in the multirate sampled-data system is derived and a design strategy for disturbance rejection is proposed. The proposed controller has IMC structure, and can be decomposed into the disturbance estimator and the inverse of the fast uniform sampled plant. We assume that the plant is open-loop stable and the disturbance consists of a sum of finite number of sinusoids with different frequencies. An example is presented for illustrations.


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