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In this paper a digital variable structure control algorithm, directly derived from a continuous one, previously presented by the authors, is considered. The proposed algorithm is able to perform the second order sliding mode control of a large class of uncertain second order nonlinear SISO systems. The discretization effects of the control law on the system behaviour are analyzed, and the sufficient...
In this paper the robust stabilization problem for a class nonlinear systems with incomplete state availability is addressed and solved by using a second order sliding mode approach. In previous works a discontinuous control input that guarantees the asymptotic stabilization of a class of systems expressed in the Brunowsky normal form, in which the last state variable was assumed to be not measurable,...
This paper tackles the regulation problem of linear time invariant systems with unmatched perturbations. The proposed methodology exploits a high order sliding mode observer, which guarantees theoretically exact state and perturbation estimation. In this work is introduced a controller with a compensation strategy based on the identified perturbation values. A nested backward sliding surface design...
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