New design methodology for adaptive switching gain based discrete-time sliding mode control. Issue 4 (3rd April 2021)

• Record Type: Journal Article
• Authors: Sharma, Nalin Kumar; Roy, Spandan; Janardhanan, S.
• Is Part Of: International journal of control. Volume 94:Issue 4(2021)
• Page Start: 1081
• Page End: 1088
• Publication Date: 2021-04-03
• Subjects: Adaptive sliding mode -- discrete-time systems -- reaching law with adaptive gain -- unknown disturbance bound; Automatic control -- Periodicals; Electronic journals; 629.8
• DOI: 10.1080/00207179.2019.1632489
• Languages: English
• ISSNs: 0020-7179

Abstract

Abstract : The adaptive sliding mode control technique relaxes the assumption of known bound of the disturbance in discrete-time systems. However, the existing technique of gain adaptation in discrete-time sliding mode control has issues of gain overestimation and underestimation. Therefore, this paper proposes a technique to adapt the switching gain such that the adaptive gain can tackle the uncertainty without any knowledge of the bound of uncertainty while overcoming the over- and under-estimation problems of switching gain.