Piecewise Fuzzy Anti-Windup Dynamic Output Feedback Control of Nonlinear Processes With Amplitude and Rate Actuator Saturations

• Published in: IEEE transactions on fuzzy systems Vol. 17; no. 2; pp. 253 - 264
• Main Authors: Zhang, Tiejun, Feng, Gang, Liu, Huaping, Lu, Jianhong
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.04.2009; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Actuator saturation; Actuators; amplitude and rate constraints; anti-windup; dynamic output feedback; Fuzzy control; Fuzzy systems; linear matrix inequality (LMI); Lyapunov method; Nonlinear control systems; Nonlinear systems; Output feedback; piecewise quadratic Lyapunov function; Process control; Robust control; Robustness; Actuator Saturation; Dynamic output feedback; Piecewise quadratic Lyapunov function; Amplitude and rate constraints; Process control; Linear matrix inequality (LMI); Anti-windup; Fuzzy systems
• ISSN: 1063-6706; 1941-0034
• DOI: 10.1109/TFUZZ.2008.924238

In this paper, a novel anti-windup dynamic output compensator is developed to deal with the robust H infin output feedback control problem of nonlinear processes with amplitude and rate actuator saturations and external disturbances. Via fuzzy modeling of nonlinear systems, the proposed piecewise fuzzy anti-windup dynamic output feedback controller is designed based on piecewise quadratic Lyapunov functions. It is shown that with sector conditions, robust output feedback stabilization of an input-constrained nonlinear process can be formulated as a convex optimization problem subject to linear matrix inequalities. Simulation study on a strongly nonlinear continuously stirred tank reactor (CSTR) benchmark plant is given to show the performance of the proposed anti-windup dynamic compensator.