Fuzzy gain-scheduling output feedback controller design for saturated linear plants

BAN Xiao-jun¹, DENG Zong-quan², WU Fen³, HUANG Xian-lin⁴

(1.Postdoctoral Research Station of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China;ª¤2.School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China;ª¤3.Dept. of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA;ª¤4. Center for Control Theory and Guidance Technology, Harbin Institute of Technology, Harbin 150001, China)ª¤ª¤ª¤;1.Postdoctoral Research Station of Mechanical Engineering, Harbin Institute of Technology, Harbin 150001, China;2.School of Mechanical and Electrical Engineering, Harbin Institute of Technology, Harbin 150001, China;3.Dept.of Mechanical and Aerospace Engineering, North Carolina State University, Raleigh, NC 27695, USA;4.Center for Control Theory and Guidance Technology, Harbin Institute of Technology, Harbin 150001, China



Abstract:

In this paper, the control design problem for linear systems subject to actuator saturations is considered. A fuzzy gain-scheduling output feedback controller is proposed to guarantee the stability of the closed-loop system as well as providing disturbance/error attenuation measured in L₂ norm. The synthesis condition is cast as a convex optimization problem in terms of linear matrix inequalities (LMIs) and can be solved efficiently. The ball-beam system is used to demonstrate the proposed saturation control approach.ª¤

Key words:  fuzzy gain-scheduling controller  output feedback  actuator saturation  disturbance rejection  ª§L₂ª§ gainª¤

DOI£º10.11916/j.issn.1005-9113.2012.06.014

Clc Number:TP273

Fund: