Design, simulation and practical implementation of sliding mode controller based on extended state observer for process control applications

2021 ◽  
Vol 1 (1) ◽  
pp. 1
Author(s):  
B.J. Parvat ◽  
N.S. Patil ◽  
Y.P. Patil
Keyword(s):  
Process Control ◽  
Sliding Mode ◽  
State Observer ◽  
Extended State Observer ◽  
Practical Implementation ◽  
Sliding Mode Controller ◽  
Extended State ◽  
Control Applications

scholarly journals Sliding Mode Control Based on High-Order Linear Extended State Observer for Near Space Vehicle

2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Ouxun Li ◽  
Ju Jiang ◽  
Li Deng ◽  
Shutong Huang
Keyword(s):  
Sliding Mode ◽  
External Disturbance ◽  
State Observer ◽  
High Order ◽  
Extended State Observer ◽  
Sliding Mode Controller ◽  
Extended State ◽  
Order Linear ◽  
Near Space ◽  
Linear Extended State Observer

Aiming at the uncertainty and external disturbance sensitivity of the near space vehicles (NSV), a novel sliding mode controller based on the high-order linear extended state observer (LESO) is designed in this paper. In the proposed sliding mode controller, the double power reaching law is adopted to enhance the state convergence rate, and the high-order LESO is designed to improve the antidisturbance ability. Moreover, the appropriate observer bandwidth and extended order are selected to further reduce or even eliminate the disturbance by analyzing their influences on the observer performance. Finally, the simulation demonstrations are given for the NSV control system with uncertain parameters and external disturbances. The theoretical analyses and simulation results consistently indicate that the proposed high-order LESO with carefully selected extended order and observer bandwidth has better performance than the traditional ones for the nonlinear NSV system with parametric uncertainty and external disturbance.

Flight Attitude Sliding Mode Control Design Based on the Compensation of Extended State Observer

2014 ◽  
Vol 716-717 ◽  
pp. 1689-1693
Author(s):  
Hai Long Xing ◽  
Juan Li
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
Design Method ◽  
Control Design ◽  
Control Object ◽  
State Observer ◽  
Extended State Observer ◽  
Sliding Mode Controller ◽  
Extended State ◽  
Mode Control

This paper proposes the sliding mode control design based on extended state observer control approch for the flight attitude system.The extended state observer (ESO) with new structure is used to estimate the total disturbance and to compensate the control object so that the flight attitude system can be simplified. Then a sliding mode controller is used to stabilize this simplified system. Finally, a numerical simulation shows the effectiveness of the proposed control design method.

Robust dynamic surface sliding mode control for attitude tracking of flexible spacecraft with an extended state observer

2016 ◽  
Vol 231 (3) ◽  
pp. 533-547 ◽  
Author(s):  
Chengbao Zhou ◽  
Di Zhou
Keyword(s):  
Attitude Control ◽  
Sliding Mode ◽  
State Observer ◽  
Flexible Spacecraft ◽  
Extended State Observer ◽  
Attitude Motion ◽  
Sliding Mode Controller ◽  
Extended State ◽  
Dynamic Surface ◽  
Attitude Tracking

The nonlinear attitude motion equations of flexible spacecraft described by the Euler angles are expressed in the vector form. Based on dynamic surface control, a new robust dynamic surface sliding mode controller is proposed for the attitude tracking and active vibration suppression of flexible spacecraft in the presence of parameter uncertainty and external disturbances. Then, a novel robust dynamic surface finite time sliding mode controller is proposed with an extended state observer such that the uncertainties can be estimated. Lyapunov stability analyses show that the two controllers can guarantee the asymptotical stability of the attitude control system. The undesirable vibration of flexible spacecraft is also actively suppressed by the modal velocity feedback approach. Finally, simulation results verified the effectiveness of the presented control algorithms.

scholarly journals Position Control of Machine Tool Moving Axis Based on Sliding Mode Control

2021 ◽  
Vol 25 (5) ◽  
pp. 664-670
Author(s):  
Wangyong He ◽  
Sanqiu Liu ◽  
Zhen Zhao ◽  
Kui Jie ◽  
◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Machine Tool ◽  
Position Control ◽  
Sliding Mode ◽  
State Observer ◽  
Extended State Observer ◽  
Ball Screw ◽  
Sliding Mode Controller ◽  
Extended State ◽  
Mode Control

Aiming at a high-precision tracking performance of the control of a machine tool moving axis, this study established a system mathematical model considering the elastic deformation of the ball screw. Then, a sliding mode controller was designed to suppress the influence of uncertainty on the control performance. Next, an extended state observer was designed to observe the system state and disturbance and provide feedback to the sliding mode controller for position control. Finally, the correctness of the designed sliding mode control and extended state observer were proved by MATLAB simulation analysis.

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