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TECHNICAL BRIEFS

Anti-Windup Control of Second-Order Plants With Saturation Nonlinearity

[+] Author and Article Information
Ming C. Leu

Department of Mechanical and Industrial Engineering, New Jersey Institute of Technology, Newark, NJ 07102

Sangsik Yang

Department of Control Engineering, A-Jou University, Suwon, Korea

Andrew U. Meyer

Department of Electrical and Computer Engineering, New Jersey Institute of Technology, Newark, NJ 07102

J. Dyn. Sys., Meas., Control 115(4), 715-720 (Dec 01, 1993) (6 pages) doi:10.1115/1.2899202 History: Received February 25, 1991; Revised June 08, 1993; Online March 17, 2008

Abstract

All real-world control systems have saturation nonlinearity in final control elements (including actuators). When controllers involve integral action, reset windup can cause instability as well as make system performance unsatisfactory. Based on the describing function method and the generalized Popov criterion, this paper presents analysis of the global stability of a control system having a saturating second-order plant, both with and without using a deadbeat limiting scheme to constrain its controller output. The improvement of system performance by incorporating the anti-windup feature in the controller is illustrated by computer simulations.

Copyright © 1993 by The American Society of Mechanical Engineers
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