Discrete-Time Sliding Mode Output Tracking Control for a Class of Nonlinear Perturbed Systems

Resumen: The output tracking problem for a class of discrete-time nonlinear systems exposed in Nonlinear Block Controllable (NBC) form is faced. This paper considers both matched and unmatched perturbations. First, the sliding manifold is designed taking into account the Block Control procedure combined with a perturbation estimation. The impact of unmatched perturbation is attenuated with help the perturbation estimation. Therefore, a discrete-time sliding mode controller is synthesized such that the system state is driven toward a vicinity of the designed sliding manifold and stays there for all sampled time instants, avoiding chattering and reducing the matched perturbation effect. The effectiveness of the proposed technique is confirmed by simulation.

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Cristian C. Zapata-Zuluaga & Alexander G. Loukianov. Discrete-Time Sliding Mode Output Tracking Control for a Class of Nonlinear Perturbed Systems. Memorias del Congreso Nacional de Control Automático, pp. 785-790, 2019.

Palabras clave

Control Robusto, Control de Sistemas No Lineales, Sistemas Discretos

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