Output feedback stabilization for planar switched nonlinear systems with asymmetric output constraints |
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Institution: | 1. College of Information Science and Technology, Bohai University, Jinzhou 121013, China;2. Faculty of Electronic Information and Electrical Engineering, Dalian University of Technology, Dalian 116024, China;3. School of Engineering, Qufu Normal University, Rizhao 276826, P. R. China;4. College of Control Science and Engineering, Bohai University, Jinzhou 121013, China |
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Abstract: | In this paper, smooth output feedback controllers are presented to stabilize a class of planar switched nonlinear systems with asymmetric output constraints (AOCs). A new common barrier Lyapunov function (CBLF) is developed to prevent the switched system from violating AOCs. Combining the adding a power integrator technique (APIT) and the CBLF, state feedback controllers are designed. Then, reduced-order nonlinear observers are constructed and smooth output feedback controllers are proposed to globally stabilize planar switched nonlinear systems under arbitrary switchings. Meanwhile, the system output meets the prescribed AOCs during operation. The method proposed in this paper is a unified tool because it works not only for switched nonlinear systems with asymmetric or symmetric output constrains but also for those without output constraints. Simulations are presented to verify the proposed method. |
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Keywords: | Asymmetric output constraints Barrier Lyapunov function Switched systems Output feedback |
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