Disturbance Rejection of Nonlinear Boiler–Turbine Unit Using High-Order Sliding Mode Observer

2020 ◽  
Vol 50 (12) ◽  
pp. 5432-5443 ◽  
Author(s):  
Zhi-gang Su ◽  
Gang Zhao ◽  
Jun Yang ◽  
Yi-guo Li
Keyword(s):  
Disturbance Rejection ◽  
Turbine Unit ◽  
Sliding Mode ◽  
High Order ◽  
Sliding Mode Observer

scholarly journals High-Order Sliding Mode-Based Fixed-Time Active Disturbance Rejection Control for Quadrotor Attitude System

Electronics ◽  
2018 ◽  
Vol 7 (12) ◽  
pp. 357 ◽  
Author(s):  
Chunlin Song ◽  
Changzhu Wei ◽  
Feng Yang ◽  
Naigang Cui
Keyword(s):  
Disturbance Rejection ◽  
Sliding Mode ◽  
Fixed Time ◽  
High Order ◽  
Extended State Observer ◽  
Active Disturbance Rejection Control ◽  
Extended State ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Control Scheme

This article presents a fixed-time active disturbance rejection control approach for the attitude control problem of quadrotor unmanned aerial vehicle in the presence of dynamic wind, mass eccentricity and an actuator fault. The control scheme applies the feedback linearization technique and enhances the performance of the traditional active disturbance rejection control (ADRC) based on the fixed-time high-order sliding mode method. A switching-type uniformly convergent differentiator is used to improve the extended state observer for estimating and attenuating the lumped disturbance more accurately. A multivariable high-order sliding mode feedback law is derived to achieve fixed time convergence. The timely convergence of the designed extended state observer and the feedback law is proved theoretically. Mathematical simulations with detailed actuator models and real time experiments are performed to demonstrate the robustness and practicability of the proposed control scheme.

High‐order sliding‐mode observer–based input‐output linearization

2019 ◽  
Vol 29 (10) ◽  
pp. 3183-3199 ◽  
Author(s):  
A. Ferreira de Loza ◽  
L. Fridman ◽  
L. T. Aguilar ◽  
R. Iriarte
Keyword(s):  
Sliding Mode ◽  
High Order ◽  
Sliding Mode Observer ◽  
Input Output ◽  
Input Output Linearization
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