Suboptimal solutions to the time-varying model matching problem

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


Two approaches to the characterization of suboptimal solutions are given. The first, via Parrot's theorem, gives all solutions. The second uses J-spectral factorizations and gives a particularly simple parametrization of all solutions. Unlike the time-invariant case, however, J-spectral factorizations do not always exist.

Original languageEnglish
Pages (from-to)299-306
Number of pages8
JournalSystems and Control Letters
Issue number4
StatePublished - 1 Jul 1995


  • Model matching, Lower triangular operators, Distance formula
  • Time-varying systems

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science (all)
  • Mechanical Engineering
  • Electrical and Electronic Engineering


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