Disturbance observer based sliding mode control of nonlinear mismatched uncertain systems

Ginoya, Divyesh; Shendge, P. D.; Phadke, S. B.

doi:10.1016/j.cnsns.2015.02.008

Cited by 92 publications

(80 citation statements)

References 32 publications

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“…Real‐time Control inputs to Pump 1 and Pump 2 with disturbance observer–based sliding mode controller (DOB‐SMC) and adaptive boundary layer sliding mode controller (ABLSMC) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Resultsmentioning

confidence: 99%

Disturbance observer–based adaptive boundary layer sliding mode controller for a type of nonlinear multiple‐input multiple‐output system

Gurumurthy

Das

2019

Intl J Robust & Nonlinear

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Summary In this paper, a disturbance observer–based adaptive boundary layer sliding mode controller (ABLSMC) is proposed to compensate external disturbance and system uncertainty for a class of output coupled multiple‐input multiple‐output (MIMO) nonlinear systems. To show the effectiveness of the proposed ABLMSC, a traditional adaptive sliding mode controller (ASMC) is also designed. The stability of the closed‐loop system is examined by using the Lyapunov stability approach. The proposed control approach is implemented for a class of nonlinear output coupled MIMO systems. For real‐time validation, a coupled tank system is considered for study. Finally, simulation and real‐time results show that the proposed ABLMSC gives better performance such as reduced chattering and energy efficiency than that of the ASMC and some reported works in the literature.

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Section: Resultsmentioning

confidence: 99%

Disturbance observer–based adaptive boundary layer sliding mode controller for a type of nonlinear multiple‐input multiple‐output system

Gurumurthy

Das

2019

Intl J Robust & Nonlinear

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“…Hence, the problem of robust stabilization and tracking control for uncertain nonlinear systems has been widely investigated. Over the past decades, a range of research has been undertaken in this field . However, these studies assumed that all system states are known.…”

Section: Introductionmentioning

confidence: 99%

Adaptive Observer‐Based Global Sliding Mode Control for Uncertain Discrete‐Time Nonlinear Systems with Time‐Delays and Input Nonlinearity

Pai

2018

Asian Journal of Control

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A new discrete‐time adaptive global sliding mode control (SMC) scheme combined with a state observer is proposed for the robust stabilization of uncertain nonlinear systems with mismatched time delays and input nonlinearity. A state observer is developed to estimate the unmeasured system states. By using Lyapunov stability theorem and linear matrix inequality (LMI), the condition for the existence of quasi‐sliding mode is derived and the stability of the overall closed‐loop system is guaranteed. Finally, simulation results are presented to demonstrate the validity of the proposed scheme.

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“…A Linear Matrix Inequalities (LMI)-based second-order FTSMC method is investigated in [32] for the tracking control of nonlinear uncertain systems with matched and mismatched uncertainties. However, the singularity problem is not fully resolved in [26][27][28][29][30]. In [33], the robust synchronization problem of disturbed chaotic systems is investigated, where, using an LMI-based disturbance observer, the boundedness conditions of disturbance errors are satis ed.…”

Section: Literature Reviewmentioning

confidence: 99%

“…In [25], SMC has been established for the control and stabilization of uncertain and nonlinear dynamical systems using the disturbance observers. In [26], a novel multiple-surface SMC is recommended for the uncertain nonlinear systems and a disturbanceobserver-based approach is de ned to estimate the mismatched uncertainties of the system. In [27], the design procedure of the adaptive nite reaching time controllers for the rst-and second-order dynamical systems with perturbations is investigated, where the suggested controllers are continuous and retain robustness to the disturbances.…”

Section: Literature Reviewmentioning

confidence: 99%

Nonsingular fast terminal sliding-mode stabilizer for a class of uncertain nonlinear systems based on disturbance observer

Mobayen

Tchier

2017

Scientia Iranica

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Abstract. This paper investigates a novel nonsingular fast terminal sliding-mode control method for the stabilization of the uncertain time-varying and nonlinear thirdorder systems. The designed disturbance observer satis es the nite-time convergence of the disturbance approximation error and the suggested nite-time stabilizer assures the presence of the switching behavior around the switching curve in the nite time. Furthermore, this approach can overcome the singularity problem of the fast terminal sliding-mode control technique. Moreover, knowledge about the upper bounds of the disturbances is not required and the chattering problem is eliminated. Usefulness and e ectiveness of the o ered procedure are con rmed by numerical simulation results.

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Disturbance observer based sliding mode control of nonlinear mismatched uncertain systems

Cited by 92 publications

References 32 publications

Disturbance observer–based adaptive boundary layer sliding mode controller for a type of nonlinear multiple‐input multiple‐output system

Disturbance observer–based adaptive boundary layer sliding mode controller for a type of nonlinear multiple‐input multiple‐output system

Adaptive Observer‐Based Global Sliding Mode Control for Uncertain Discrete‐Time Nonlinear Systems with Time‐Delays and Input Nonlinearity

Nonsingular fast terminal sliding-mode stabilizer for a class of uncertain nonlinear systems based on disturbance observer

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