Generalization of Adaptive Observer and Method of Optimizing Its Convergence Properties

[+] Author and Article Information
C. H. Kim

Autonetics Group, Marine Systems Division, Rockwell International, Anaheim, Calif.

D. P. Lindorff

Department of Electrical Engineering and Computer Science, University of Connecticut, Storrs, Conn.

J. Dyn. Sys., Meas., Control 99(1), 15-22 (Mar 01, 1977) (8 pages) doi:10.1115/1.3427067 History: Received December 08, 1976; Online July 13, 2010


This paper concerns a generalization of the design of the adaptive observer, and an investigation of its convergence properties. By application of hyperstability theory the design freedom is enlarged to permit use of time variable adaptive gains. Based on the assumption of periodic excitation, and with the aid of Floquet Theory a new convergence criterion is defined. By this means the effects of adaptive gains and input frequencies upon convergence time are evaluated. Structural properties of the adaptive observer are compared with other adaptive schemes, in particular with regard to bias due to noise.

Copyright © 1977 by ASME
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