Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer

An accelerated second-order super-twisting sliding mode observer with an adaptive gain is proposed for a typical nonlinear system. The key contribution of this algorithm is that the rate of convergence of observation error is accelerated remarkably by introducing “system damping.&#x20...

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Main Authors:	Cheng Lin, Shengxiong Sun, Paul Walker, Nong Zhang
Format:	Article
Language:	English
Published:	IEEE 2019-01-01
Series:	IEEE Access
Subjects:	Sliding mode accelerated super-twisting observer
Online Access:	https://ieeexplore.ieee.org/document/8478251/

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spelling	doaj-65fe79fee72d4611900e576b5075b8b12021-03-29T22:37:53ZengIEEEIEEE Access2169-35362019-01-017252322523810.1109/ACCESS.2018.28727928478251Accelerated Adaptive Second Order Super-Twisting Sliding Mode ObserverCheng Lin0Shengxiong Sun1https://orcid.org/0000-0002-8079-8934Paul Walker2Nong Zhang3National Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing, ChinaNational Engineering Laboratory for Electric Vehicles, Beijing Institute of Technology, Beijing, ChinaFaculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW, AustraliaFaculty of Engineering and Information Technology, University of Technology Sydney, Ultimo, NSW, AustraliaAn accelerated second-order super-twisting sliding mode observer with an adaptive gain is proposed for a typical nonlinear system. The key contribution of this algorithm is that the rate of convergence of observation error is accelerated remarkably by introducing “system damping.” Chattering issue is attenuated with a satisfactory performance compared with conventional sliding mode observer. Furthermore, adaptive gain can vary with deviation between the trajectory and the sliding mode switching manifold dynamically so that overshoot can be reduced. The novel observer is proven mathematically to be convergent in a finite time. Finally, an example of nonlinear system is given to verify the performance.https://ieeexplore.ieee.org/document/8478251/Sliding modeacceleratedsuper-twistingobserver
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Cheng Lin Shengxiong Sun Paul Walker Nong Zhang
spellingShingle	Cheng Lin Shengxiong Sun Paul Walker Nong Zhang Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer IEEE Access Sliding mode accelerated super-twisting observer
author_facet	Cheng Lin Shengxiong Sun Paul Walker Nong Zhang
author_sort	Cheng Lin
title	Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer
title_short	Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer
title_full	Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer
title_fullStr	Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer
title_full_unstemmed	Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer
title_sort	accelerated adaptive second order super-twisting sliding mode observer
publisher	IEEE
series	IEEE Access
issn	2169-3536
publishDate	2019-01-01
description	An accelerated second-order super-twisting sliding mode observer with an adaptive gain is proposed for a typical nonlinear system. The key contribution of this algorithm is that the rate of convergence of observation error is accelerated remarkably by introducing “system damping.” Chattering issue is attenuated with a satisfactory performance compared with conventional sliding mode observer. Furthermore, adaptive gain can vary with deviation between the trajectory and the sliding mode switching manifold dynamically so that overshoot can be reduced. The novel observer is proven mathematically to be convergent in a finite time. Finally, an example of nonlinear system is given to verify the performance.
topic	Sliding mode accelerated super-twisting observer
url	https://ieeexplore.ieee.org/document/8478251/
work_keys_str_mv	AT chenglin acceleratedadaptivesecondordersupertwistingslidingmodeobserver AT shengxiongsun acceleratedadaptivesecondordersupertwistingslidingmodeobserver AT paulwalker acceleratedadaptivesecondordersupertwistingslidingmodeobserver AT nongzhang acceleratedadaptivesecondordersupertwistingslidingmodeobserver
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Accelerated Adaptive Second Order Super-Twisting Sliding Mode Observer

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