Nonsingular Fixed-time Sliding Mode Control for Second-order Systems with Unknown Disturbance

2021 ◽  
Author(s):  
Ye Tian ◽  
Pingli Lu ◽  
Qing Jiang ◽  
Changkun Du ◽  
Haikuo Liu
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Fixed Time ◽  
Second Order ◽  
Mode Control ◽  
Unknown Disturbance ◽  
Second Order Systems

Predefined-time integral sliding mode control of second-order systems

2020 ◽  
Vol 51 (16) ◽  
pp. 3425-3435
Author(s):  
Juan Diego Sánchez-Torres ◽  
Aldo Jonathan Muñoz-Vázquez ◽  
Michael Defoort ◽  
Rodrigo Aldana-López ◽  
David Gómez-Gutiérrez
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Second Order ◽  
Integral Sliding Mode Control ◽  
Integral Sliding Mode ◽  
Mode Control ◽  
Time Integral ◽  
Second Order Systems

New fixed-time sliding mode control for a mismatched second-order system

2020 ◽  
pp. 014233122095230
Author(s):  
Guo Jianguo ◽  
Yang Shengjiang
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Initial Conditions ◽  
Nonlinear Function ◽  
Fixed Time ◽  
Second Order ◽  
Order System ◽  
Time Stability ◽  
Mode Control ◽  
Mismatched Uncertainties

A fixed-time sliding mode control (FTSMC) method is proposed for a second-order system with mismatched uncertainties in this paper. A new sliding mode, which is insensitive to the mismatched disturbance, is present to eliminate the effect of mismatched uncertainties by adopting the differentiable nonlinear function, and to obtain the fixed time stability independent of initial conditions by using the fraction-order function. In order to improve the performance of control system, the extended disturbance-observer-based fixed-time sliding mode control (EDO-FTSMC) approach is investigated to obtain the fixed-time stability subject to the mismatched uncertainties. Finally, the performance of the proposed control method is illustrated to compare other control approaches with numerical simulation results and application examples.

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