Controller Designed via an Adaptive Reaching Law for DSMC Systems

In this brief, a sliding mode controller (SMC) established via a new adaptive reaching law is proposed for discrete-time systems. To guarantee a smaller width of the quasi-sliding mode domain (QSMD), disturbance of the system is estimated based on the second-order difference of historical observatio...

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Veröffentlicht in:	IEEE transactions on circuits and systems. II, Express briefs Express briefs, 2020-02, Vol.67 (2), p.330-334
Hauptverfasser:	Lin, Shuyi, Zhang, Weidong, Wang, Hao
Format:	Artikel
Sprache:	eng
Schlagworte:	Adaptive reaching law design Adaptive systems Circuits and systems Control systems design Controllers Convergence discrete sliding-mode control (DSMC) Discrete time systems quasi-sliding mode domain (QSMD) Sliding mode control Switches Trajectory
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Beschreibung
Zusammenfassung:	In this brief, a sliding mode controller (SMC) established via a new adaptive reaching law is proposed for discrete-time systems. To guarantee a smaller width of the quasi-sliding mode domain (QSMD), disturbance of the system is estimated based on the second-order difference of historical observation information, and the reaching law is designed on the choice of a negative power term that adapts to the variations of the switching function. Dynamics of the controlled system both outside and within the QSMD are analyzed.
ISSN:	1549-7747 1558-3791
DOI:	10.1109/TCSII.2019.2907296