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Robust control of a class of uncertain first-order systems with least prior knowledge

✍ Scribed by Jose Alvarez-Ramirez; Ricardo Femat; Jesus Gonzalez-Trejo

Publisher: Elsevier Science
Year: 1998
Tongue: English
Weight: 154 KB
Volume: 53
Category: Article
ISSN: 0009-2509
DOI: 10.1016/s0009-2509(98)00096-7

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✦ Synopsis

In this work we deal with robust control of a class of first-order nonlinear systems which contain uncertainties. To cope with the uncertainties, an observer-based controller is proposed, and the uniform boundedness of all closed-loop signals and semiglobal practical convergence of the system state are guaranteed. In contrast with some previous attempts to relax the a priori knowledge on uncertainties bounds by using discontinuous control law, we propose a dynamic compensator which leads to continuous control laws. The applicability of the control scheme to regulation of temperature in stirred tanks and one-point control in distillation is shown by numerical simulations. 1998 Elsevier Science Ltd. All rights reserved.

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