Systems of controlled functional differential equations and adaptive tracking

A. Ilchmann, E. P. Ryan, C. J. Sangwin

Research output: Contribution to journalArticlepeer-review


An adaptive servomechanism is developed in the context of the problem of approximate or practical tracking (with prescribed asymptotic accuracy), by the system output, of any admissible reference signal (absolutely continuous and bounded with essentially bounded derivative) for every member of a class of controlled dynamical systems modelled by functional differential equations.

Original languageEnglish
Pages (from-to)1746-1764
Number of pages19
JournalSIAM Journal on Control and Optimization
Issue number6
Publication statusPublished - 2002


  • Adaptive control
  • Functional differential equations
  • Nonlinear systems
  • Practical tracking
  • Universal servomechanism

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