Uniformly optimal control of linear feedback systems

A. Feintuch, B. A. Francis

Research output: Contribution to journalArticlepeer-review

59 Scopus citations


The problem of uniformly optimal control is posed in the context of linear time-varying discrete-time systems; the controller is optimal uniformly over a pre-specified set of exogenous signals. Existence of an optimal controller is proved and a formula for the minimum cost is derived. The time-invariant case is treated in the frequency domain. It is shown that for time-invariant systems an optimal time-varying controller is no better than an optimal time-invariant controller.

Original languageEnglish
Pages (from-to)563-574
Number of pages12
Issue number5
StatePublished - 1 Jan 1985


  • Multivariable control systems
  • functional analysis
  • optimal control
  • regulator theory
  • time-varying systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering


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