Global stabilization of partially linear composite systems

A. Saberi, P. V. Kokotovic, H. J. Sussmann

Research output: Contribution to journalArticlepeer-review

207 Scopus citations

Abstract

A linear stabilizable, nonlinear asymptotically stable, cascade system is globally stabilizable by smooth dynamic state feedback if (a) the linear subsystem is right invertible and weakly minimum phase, and, (b) the only linear variables entering the nonlinear subsystem are the output and the zero dynamics corresponding to this output. Both of these conditions are coordinate-free and there is freedom of choice for the linear output variable. This result generalizes several earlier sufficient conditions for stabilizability. Moreover, the weak minimum-phase condition for the linear subsystem cannot be relaxed unless a growth restriction is imposed on the nonlinear subsystem.

Original languageEnglish (US)
Pages (from-to)1491-1503
Number of pages13
JournalSIAM Journal on Control and Optimization
Volume28
Issue number6
DOIs
StatePublished - 1990

All Science Journal Classification (ASJC) codes

  • Control and Optimization
  • Applied Mathematics

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