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Adaptive control for switched uncertain nonlinear systems with time‐varying output constraint and input saturation
Authors:Aiqing Chen  Li Tang  Yan‐Jun Liu  Ying Gao
Abstract:This paper is concerned with adaptive tracking control for switched uncertain nonlinear systems, which contain the time‐varying output constraint (TVOC) and input asymmetric saturation characteristic. In response to the unknown functions, the fuzzy logic systems are adopted. The controller is constructed by the backstepping technique. Based on the Tangent Barrier Lyapunov Function (BLF‐Tan), an adaptive switched control scheme is designed. It is demonstrated that all signals in the resulted system are semiglobally uniformly ultimately bounded with TVOC under arbitrary switchings. Furthermore, the effectiveness of presented control method is validated via the simulation example.
Keywords:input asymmetric saturation  switched uncertain nonlinear systems  Tangent Barrier Lyapunov Function  time‐varying output constraint
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