Generalized extended state observer–based repetitive control for systems with mismatched disturbances

2019 ◽  
Vol 29 (11) ◽  
pp. 3777-3792 ◽  
Author(s):  
Lan Zhou ◽  
Lei Cheng ◽  
Jinhua She ◽  
Zhu Zhang
Keyword(s):  
Repetitive Control ◽  
State Observer ◽  
Extended State Observer ◽  
Extended State ◽  
Mismatched Disturbances

Repetitive Control-Based Extended State Observer for Current Fluctuation Suppression of PMSM Drives

2021 ◽  
Author(s):  
Wang Bo ◽  
Sun Yuduo ◽  
Yu Yong ◽  
Tian Minghe ◽  
Xu Dianguo
Keyword(s):  
Repetitive Control ◽  
State Observer ◽  
Extended State Observer ◽  
Extended State ◽  
Current Fluctuation

scholarly journals Gain-scheduled predictive extended state observer for time-varying delays systems with mismatched disturbances

2019 ◽  
Vol 84 ◽  
pp. 206-213 ◽  
Author(s):  
Antonio Gonzalez ◽  
Vicente Balaguer ◽  
Pedro Garcia ◽  
Angel Cuenca
Keyword(s):  
State Observer ◽  
Extended State Observer ◽  
Time Varying ◽  
Extended State ◽  
Mismatched Disturbances ◽  
Gain Scheduled

Dual extended state observer-based backstepping control of electro-hydraulic servo systems with time-varying output constraints

2019 ◽  
Vol 42 (5) ◽  
pp. 1070-1080
Author(s):  
Guichao Yang
Keyword(s):  
Hydraulic System ◽  
State Observer ◽  
Extended State Observer ◽  
Time Varying ◽  
Extended State ◽  
Servo Systems ◽  
Output Constraints ◽  
Unknown Disturbances ◽  
Hydraulic Servo ◽  
Mismatched Disturbances

In this paper, a novel nonlinear robust controller ensuring time-varying output constraints for the double-rod hydraulic servo systems in the presence of largely unknown matched and mismatched disturbances is proposed. By employing two extended state observers for each channel of the load dynamics and pressure dynamics of the considered hydraulic system, the large matched and mismatched disturbances are successfully compensated. In addition, a time-varying barrier Lyapunov function (BLF) of asymmetric type has been employed to make sure that the position output is never violated. The resulting controller is synthesized using the backstepping procedure. The stability of the whole closed-loop hydraulic system associated with the dual extended state observer (ESO)-based controller is strictly guaranteed. In theory, the proposed control strategy can not only ensure the output satisfy the preset constrained space, but also enhance the output tracking performance when the system faces various largely unknown disturbances. The effectiveness of the proposed controller has also been demonstrated via comparative simulation results.

Sliding Mode Control Based on Linear Extended State Observer for DC-to-DC Buck-Boost Power Converter System with Mismatched Disturbances

2021 ◽  
pp. 1-1
Author(s):  
Jesus Linares-Flores ◽  
Jose Antonio JAJA Juarez-Abad ◽  
Arturo Hernandez-Mendez ◽  
Omar Castro-Heredia ◽  
Jose Fermi Guerrero-Castellanos ◽  
...  
Keyword(s):  
Sliding Mode Control ◽  
Sliding Mode ◽  
State Observer ◽  
Power Converter ◽  
Extended State Observer ◽  
Extended State ◽  
Mode Control ◽  
Linear Extended State Observer ◽  
Mismatched Disturbances
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