Nonlinear reduced-order state and parameter observer

D. A. Haessig, B. Friedland

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


A globally stable algorithm for jointly estimating the state and parameters in deterministic nonlinear dynamic systems is developed. This is accomplished by combining the concepts developed by Raghavan for the design of a full-order adaptive observer with the techniques used by Friedland for development of reduced-order estimators. The result is a new method whose applicability exceeds that of many existing techniques in that it can accommodate multi-output systems. Several previously developed methods applicable to the same class of nonlinear system are restricted to single-output systems. In addition, the new method is shown to have some computational advantages.

Original languageEnglish (US)
Pages (from-to)1978-1980
Number of pages3
JournalProceedings of the American Control Conference
StatePublished - 2001
Externally publishedYes
Event2001 American Control Conference - Arlington, VA, United States
Duration: Jun 25 2001Jun 27 2001

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


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