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This paper presents a solution to the problem of global exact output tracking for uncertain multivariable linear plants with non-uniform arbitrary relative degree using output feedback sliding mode control. The key idea to overcome the relative degree obstacle is to generalize our previous hybrid estimation scheme to a multivariable version by combining, through switching, a standard linear lead filter...
This paper presents a parameter identification method involving a high-order sliding mode observer. The method is based on the equivalent output injection technique. Using the finite-time convergence of the sliding mode observer, an algebraic reconstruction algorithm is designed to identify the system parameters through a finite time window.
In this paper we propose a novel Lyapunov based design of a variable gain super-twisting algorithm ensuring global finite time convergence to the desired sliding surface for linear time invariant systems with absolutely continuous matched uncertainties/disturbances bounded together with their gradients by known functions. The proposed methodology makes the control strategy global like in the variable...
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