An anti-windup design with local sector and H2/H∞ optimization for flight environment simulation system

• Published in: Aerospace science and technology Vol. 128; p. 107787
• Main Authors: Liu, Jiashuai, Wang, Xi, Liu, Xi, Pei, Xitong, Dan, Zhihong, Zhang, Song, Yang, Shubo, Zhang, Louyue
• Format: Journal Article
• Language: English
• Published: Elsevier Masson SAS 01.09.2022
• Subjects: Anti-windup; Flight environment simulation system; formula omitted; LMI; Local sector; Saturations; LMI; H2/H; Flight environment simulation system; Local sector; Saturations; Anti-windup
• ISSN: 1270-9638; 1626-3219
• DOI: 10.1016/j.ast.2022.107787

Flight Environment Simulation System (FESS) is an important ground test facility, which can simulate the flight environment to test the performance of the aircraft engine. Focusing on the anti-windup control of FESS in the presence of actuator (magnitude and rate) saturations, an anti-windup design method with local sector and H2/H∞ optimization is proposed. Firstly, the saturation-type static nonlinearities are separated from the dynamic nonlinear model of the actuator, and then an anti-windup architecture with static compensator is constructed. Subsequently, the integrated H2 performance and H∞ performance are used to deal with the saturation nonlinearities to reduce the system performance degradation caused by the magnitude and rate saturations. Meanwhile, the internal stability of the closed-loop system is guaranteed via local sector condition. Finally, an optimization problem based on Linear Matrix Inequalities (LMI) is developed for anti-windup design, in which internal stability, H2 performance and H∞ performance are considered. The designed anti-windup controller is applied to FESS, and the numerical simulation results verify the effectiveness of the proposed method. Furthermore, some key issues in anti-windup design are discussed.