Quasi-Direct Adaptive Control for Nonminimum Phase Systems

[+] Author and Article Information
R. Lozano Leal

Centro de Investigación y de Estudios Avanzados del IPN, Depto. de Ing. Eléctrica, Apartado Postal 14-740, México 14, D.F.

I. D. Landau

Laboratoire d’Automatique de Grenoble, 38402 St. Martin D’Heres, France

J. Dyn. Sys., Meas., Control 104(4), 311-316 (Dec 01, 1982) (6 pages) doi:10.1115/1.3139714 History: Received April 01, 1982; Online July 21, 2009


An adaptive control algorithm applicable to nonminimum phase, discrete, linear, time invariant systems is presented. This algorithm does not require solving a Bezout identity at each sampling step by incorporating two different identification algorithms. The first one identifies the plant’s parameters and provides them to the second one which in turn identifies the controller’s parameters. Independent tracking and regulation objectives are achieved in the limit with bounded plant input and output for a range of initial plant parameters estimates.

Copyright © 1982 by ASME
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