NDLI: FxTDO-based non-singular terminal sliding mode control for second-order uncertain systems

Content Provider	IET Digital Library
Author	Wu, Rong Wei, Changzhu Yang, Feng Cui, Naigang Zhang, Liang
Abstract	In this study, a composite robust control approach with non-singular terminal sliding mode control and fixed-time disturbance observer (FxTDO) is proposed for a class of second-order non-linear systems in the presence of matched uncertain disturbances. A bi-limit-weighted homogeneous FxTDO is designed based on the efficient utilisation of power functions obtained by the differentiation error amplification strategy. The FxTDO enjoys a fast convergence rate and simple parameters tuning process. By introducing the disturbance estimation to directly compensate the total disturbance in the composite control law, only a particular small gain-based discontinuous control term is needed to guarantee the existence of sliding mode, and chattering phenomenon can be attenuated. The simulation results revealed the effectiveness of the proposed method.
Starting Page	2459
Ending Page	2467
Page Count	9
ISSN	17518644
Volume Number	12
e-ISSN	17518652
Issue Number	Issue 18, Dec (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-cta/12/18
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-cta.2018.5455
Journal	IET Control Theory & Applications
Publisher Date	2018-09-12
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Bi-limit-weighted Homogeneous FxTDO Chattering Phenomenon Composite Control Law Composite Robust Control Approach Control System Analysis Control System Synthesis Convergence of Numerical Method Differentiation Differentiation Error Amplification Strategy Discrete Control System Disturbance Estimation Fast Convergence Rate Fixed-time Disturbance Observer FxTDO-based Nonsingular Terminal Sliding Mode Control Gain Control Matched Uncertain Disturbances Modelling And Identification Multivariable Control System Nonlinear Control System Numerical Integration And Differentiation Observers Parameter Tuning Process Phase And Gain Control Power Function Robust Control Sampled Data System Second-order Nonlinear System Second-order Uncertain System Simulation Small Gain-based Discontinuous Control Term Stability in Control Theory Synthesis Method Uncertain System Variable Structure System
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Human-Computer Interaction Electrical and Electronic Engineering Computer Science Applications

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