The design of active disturbance rejection control law of underwater high-speed vehicle longitudinal channel

SummaryThis paper presents an advanced robust active disturbance rejection control (ADRC) for flexible link manipulator (FLM) to track desired trajectories in the joint space and minimize the link’s vibrations. It has been shown that the ADRC technique has a very good disturbance rejection capability. Both the internal dynamics and the external disturbances can be estimated and compensated in real time. The proposed robust ADRC control law is developed to solve the problems existing in the original version of the ADRC related to the disturbance estimation errors and the variation of the parameters. Indeed, these parameters cannot be included in the existing disturbances and then be estimated by the extended state observer. The proposed control law is based on the sliding mode technique, which considers the uncertainties in the control gains and disturbance estimation errors. Lyapunov theory is used to prove the closed-loop stability of the system. The proposed control strategy is simulated and tested experimentally on one FLM. The effect of the observer bandwidth on the system performance is simulated and studied to select the best values of the bandwidth frequency. The simulation and experimental results show that the proposed robust ADRC has better performance than the traditional ADRC.

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A single position loop control strategy for high-speed voice coil motor based on active disturbance rejection control

2017 IEEE 26th International Symposium on Industrial Electronics (ISIE) ◽

10.1109/isie.2017.8001251 ◽

2017 ◽

Cited By ~ 1

Author(s):

Zhongxu Wang ◽

Huai Wang ◽

Yong Li ◽

Frede Blaabjerg

Keyword(s):

Control Strategy ◽

Disturbance Rejection ◽

High Speed ◽

Voice Coil Motor ◽

Active Disturbance Rejection Control ◽

Loop Control ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control

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Linear Active Disturbance Rejection Control for Lever-Type Electric Erection System Based on Approximate Model

Journal of Control Science and Engineering ◽

10.1155/2019/3742694 ◽

2019 ◽

Vol 2019 ◽

pp. 1-7

Author(s):

Hailong Niu ◽

Qinhe Gao ◽

Shengjin Tang ◽

Wenliang Guan

Keyword(s):

Trajectory Tracking ◽

Disturbance Rejection ◽

Approximate Model ◽

Control Law ◽

Active Disturbance Rejection Control ◽

Tracking Accuracy ◽

Servo Drive ◽

Active Disturbance Rejection ◽

Disturbance Rejection Control ◽

Servo Drive System

Linear active disturbance rejection control (LADRC) algorithm is proposed to realize accurate trajectory tracking for the lever-type electric erection system. By means of system identification and curve fitting, the approximate model is built, which is consisting of the servo drive system with velocity closed-loop and the lever-type erection mechanism. The proportional control law with velocity feedforward is designed to improve the trajectory tracking performance. The experimental results verify that, based on approximate model, LADRC has better tracking accuracy and stronger robustness to the disturbance caused by the change of intrinsic parameters compared with PI controller.

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