Sampled Disturbance Decoupling with Stability using Multirate Control

L. J. Serrano, P. J. Ramadge

Research output: Contribution to journalArticlepeer-review

2 Scopus citations


We consider the sampled disturbance decoupling problem (SDDP) for finite-dimensional linear systems. In this problem, a feedback control law is designed that eliminates the effect of an unknown disturbance on the output at specified sampling times. For discrete-time systems, we show that SDDP has a static-state feedback solution if and only if this feedback solves the standard disturbance decoupling problem (DDP). However, time-varying control laws can solve SDDP when it is not solvable by static-state feedback and, hence, when DDP cannot be solved. In particular, we consider a technique for designing a periodically time-varying multirate controller that solves SDDP.

Original languageEnglish (US)
Pages (from-to)1061-1065
Number of pages5
JournalIEEE Transactions on Automatic Control
Issue number9
StatePublished - Sep 1991

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Computer Science Applications
  • Electrical and Electronic Engineering


Dive into the research topics of 'Sampled Disturbance Decoupling with Stability using Multirate Control'. Together they form a unique fingerprint.

Cite this