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Output Feedback Stabilization of Linear Systems With Actuator Saturation

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3 Author(s)
Fen Wu ; Dept. of Mech. & Aerosp. Eng., North Carolina State Univ., Raleigh, NC ; Zongli Lin ; Qian Zheng

The note presents a method for designing an output feedback law that stabilizes a linear system subject to actuator saturation with a large domain of attraction. This method applies to general linear systems including strictly unstable ones. A nonlinear output feedback controller is first expressed in the form of a quasi-LPV system. Conditions under which the closed-loop system is locally asymptotically stable are then established in terms of the coefficient matrices of the controller. The design of the controller (coefficient matrices) that maximizes an estimate of the domain of attraction is then formulated and solved as an optimization problem with LMI constraints

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Automatic Control, IEEE Transactions on  (Volume:52 ,  Issue: 1 )