Adaptive Control of Hypersonic Vehicles with Parametric uncertainties and Angular Velocity Constraints

2021 ◽  
Author(s):  
Xuan'an Ji ◽  
Wei Wang ◽  
Zhongtao Cheng ◽  
Bo Wang ◽  
Lei Liu
Keyword(s):  
Adaptive Control ◽  
Angular Velocity ◽  
Hypersonic Vehicles ◽  
Parametric Uncertainties ◽  
Velocity Constraints

scholarly journals Active Disturbance Rejection Control for Position Tracking of Electro-Hydraulic Servo Systems under Modeling Uncertainty and External Load

Actuators ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 20
Author(s):  
Manh Hung Nguyen ◽  
Hoang Vu Dao ◽  
Kyoung Kwan Ahn
Keyword(s):  
Angular Velocity ◽  
Disturbance Rejection ◽  
Lyapunov Theory ◽  
Tracking Performance ◽  
System Stability ◽  
Position Tracking ◽  
Parametric Uncertainties ◽  
Active Disturbance Rejection Control ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control

In this paper, an active disturbance rejection control is designed to improve the position tracking performance of an electro-hydraulic actuation system in the presence of parametric uncertainties, non-parametric uncertainties, and external disturbances as well. The disturbance observers (Dos) are proposed to estimate not only the matched lumped uncertainties but also mismatched disturbance. Without the velocity measurement, the unmeasurable angular velocity is robustly calculated based on the high-order Levant’s exact differentiator. These disturbances and angular velocity are integrated into the control design system based on the backstepping framework which guarantees high-accuracy tracking performance. The system stability analysis is analyzed by using the Lyapunov theory. Simulations based on an electro-hydraulic rotary actuator are conducted to verify the effectiveness of the proposed control method.

Observer-Based Feedback Adaptive Control for Nonlinear Hypersonic Vehicles

2017 ◽  
Author(s):  
Douglas I. Famularo ◽  
John Valasek ◽  
Jonathan A. Muse ◽  
Michael A. Bolender
Keyword(s):  
Adaptive Control ◽  
Hypersonic Vehicles

scholarly journals Nonlinear Adaptive Control for Wind Turbine Under Wind Speed Variation

2018 ◽  
Vol 7 (2) ◽  
pp. 87
Author(s):  
Abdelhaq.Amar Bensaber ◽  
Mustapha Benghanem ◽  
Mohammed.Amar Bensaber ◽  
Abdelmadjid. Guerouad
Keyword(s):  
Adaptive Control ◽  
Electrical Power ◽  
Adaptation Strategy ◽  
Parametric Uncertainties ◽  
System Operation ◽  
External Disturbances ◽  
Good Efficiency ◽  
Power System Operation ◽  
Nonlinear Adaptive Control ◽  
Interesting Solution

<span>Wind turbines components work as nonlinear systems where electromechanical parameters change frequently [1], which makes nonlinear control an interesting solution to prevail good efficiency. SMC has been largely used in electrical power applications because it offers interesting features like robustness to parametric uncertainties and external disturbances, to conquer the biggest drawback of the SMC, adaptation strategy consists on updating the sliding gain and the turbine torque to contribute with some important characteristics such as chatter-free performance, heftiness, robustness and secure power system operation. Matlab tests are introduced and compared.</span>

Nonlinear Adaptive Control for Wind Turbine Under Wind Speed Variation

2018 ◽  
Vol 7 (2) ◽  
pp. 89
Author(s):  
Abdelhaq.Amar Bensaber ◽  
Mustapha Benghanem ◽  
Mohammed.Amar Bensaber ◽  
Abdelmadjid. Guerouad
Keyword(s):  
Adaptive Control ◽  
Electrical Power ◽  
Adaptation Strategy ◽  
Parametric Uncertainties ◽  
System Operation ◽  
External Disturbances ◽  
Good Efficiency ◽  
Power System Operation ◽  
Nonlinear Adaptive Control ◽  
Interesting Solution

<span>Wind turbines components work as nonlinear systems where electromechanical parameters change frequently [1], which makes nonlinear control an interesting solution to prevail good efficiency. SMC has been largely used in electrical power applications because it offers interesting features like robustness to parametric uncertainties and external disturbances, to conquer the biggest drawback of the SMC, adaptation strategy consists on updating the sliding gain and the turbine torque to contribute with some important characteristics such as chatter-free performance, heftiness, robustness and secure power system operation. Matlab tests are introduced and compared.</span>

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