Extended anti-windup control schemes for LTI and LFT systems with actuator saturations

• Published in: International journal of robust and nonlinear control Vol. 14; no. 15; pp. 1255 - 1281
• Main Authors: Wu, Fen, Soto, Marco
• Format: Journal Article
• Language: English
• Published: Chichester, UK John Wiley & Sons, Ltd 01.10.2004
• Subjects: anti-windup compensation; controller construction; input magnitude and rate saturations; linear matrix inequality (LMI); stability and performance
• ISSN: 1049-8923; 1099-1239
• DOI: 10.1002/rnc.943

In this paper, the popular anti‐windup control scheme will be extended in two important directions. The first scenario is the control of LTI systems subject to actuators with both magnitude and rate constraints. The second case of extension is LFT systems with input saturations. Based on the extended Circle criterion, we will develop convex anti‐windup control synthesis conditions in the form of LMIs for each class of systems. The explicit anti‐windup controller formula are also provided to facilitate compensator construction. The effectiveness of proposed anti‐windup control schemes will be demonstrated using a flight control example. Copyright © 2004 John Wiley & Sons, Ltd.