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Discrete–Time Sliding Mode Control of Linear Systems with Input Saturation Cover

Abstract

The paper proposes a discrete-time sliding mode controller for single input linear dynamical systems, under requirements of the fast response without overshoot and strong robustness to matched disturbances. The system input saturation is imposed during the design due to inevitable limitations of most actuators. The system disturbances are compensated by employing nonlinear estimation by integrating the signum of the sliding variable. Hence, the proposed control structure may be regarded as a super-twisting-like algorithm. The designed system stability is analyzed as well as the sliding manifold convergence conditions are derived using a discrete-time model of the system in the δ-domain. The results obtained theoretically have been verified by computer simulations.

DOI: https://doi.org/10.34768/amcs-2020-0038 | Journal eISSN: 2083-8492 | Journal ISSN: 1641-876X
Language: English
Page range: 517 - 528
Submitted on: Mar 19, 2020
Accepted on: May 14, 2020
Published on: Sep 29, 2020
Published by: University of Zielona Góra
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2020 Boban Veselić, Čedomir Milosavljević, Branislava Peruničić-Draženović, Senad Huseinbegović, Milutin Petronijević, published by University of Zielona Góra
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.