Title: Robust discrete sliding mode control for non-minimum phase systems in input-output representation

Authors: Laila Mokhtar; Houda Ben Mansour; Ahmed Said Nouri

Addresses: Research Unit: Numerical Control of Industrial Processes, National Engineering School of Gabes, University of Gabes, Tunisia ' Research Unit: Numerical Control of Industrial Processes, National Engineering School of Gabes, University of Gabes, Tunisia ' Research Unit: Numerical Control of Industrial Processes, National Engineering School of Gabes, University of Gabes, Tunisia

Abstract: This paper presents a control strategy for non-minimum phase systems using sliding mode control. As the discrete sliding mode control with input-output representation, with classical sliding function, is not applicable to non-minimum phase system, a generalised sliding surface was developed to overcome the problems of unstable zero. Then, a robustness analysis is conducted to determine the most appropriate choice of discrete sliding mode control for non-minimum phase systems. Simulation results prove the effectiveness of the proposed method.

Keywords: non-minimum phase systems; NMPS; discrete time; sliding mode; control; input-output representation; robustness analysis.

DOI: 10.1504/IJDSSS.2018.093200

International Journal of Digital Signals and Smart Systems, 2018 Vol.2 No.2, pp.167 - 183

Received: 19 Sep 2017
Accepted: 10 Mar 2018
Published online: 13 Jul 2018 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article