Disturbance Rejection Control of Industrial Heavy-load Hydraulic Force Servo System

2009 ◽  
Vol 35 (7) ◽  
pp. 926-932 ◽  
Author(s):  
Bo YANG ◽  
Wan-Zhou LI ◽  
Zhao-Fang JIANG ◽  
Tong-Gang SHI ◽  
Guan-Yuan WU ◽  
...  
Keyword(s):  
Disturbance Rejection ◽  
Servo System ◽  
Heavy Load ◽  
Hydraulic Force ◽  
Disturbance Rejection Control

Electro-hydraulic position servo system based on sliding mode active disturbance rejection compound control

2021 ◽  
pp. 095440622110282
Author(s):  
Zhang He ◽  
Zhao Jiyun ◽  
Wang Yunfei ◽  
Zhang Zhonghai ◽  
Ding Haigang ◽  
...  
Keyword(s):  
Disturbance Rejection ◽  
Control Method ◽  
Sliding Mode ◽  
Servo System ◽  
Active Disturbance Rejection Control ◽  
Compound Control ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Uncertain Disturbances ◽  
Position Servo

This study proposes a compound control method based on sliding mode and active disturbance rejection control to address the difficulty of controlling the cutting head for boom-type roadheader with parameter changes and uncertain disturbances. The fastest discrete tracking differentiator and extended state observer based on the traditional active disturbance rejection control are designed. Additionally, the controller of the sliding mode and active disturbance rejection control is constructed. Theoretical analysis indicates that the proposed controller ensures asymptotic stability, despite the existing uncertain disturbances. Moreover, a system based on AMESim and MATLAB/Simulink Co-simulation model is developed to further verify the performance of proposed algorithm. Compared with traditional active disturbance rejection control, proportional-integral-derivative(PID) and sliding mode control, co-simulation results demonstrate that the sliding mode active disturbance rejection compound control improves the tracking accuracy and robustness of the position servo system.

scholarly journals Active Disturbance Rejection Control of Valve-Controlled Cylinder Servo Systems Based on MATLAB-AMESim Cosimulation

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Wenxiao Guo ◽  
Yanbin Zhao ◽  
Ruiqin Li ◽  
Haigang Ding ◽  
Jianwei Zhang
Keyword(s):  
Disturbance Rejection ◽  
Servo System ◽  
Constant Load ◽  
Variable Load ◽  
Active Disturbance Rejection Control ◽  
Servo Systems ◽  
Large Power ◽  
Active Disturbance Rejection ◽  
Disturbance Rejection Control ◽  
Load Variable

The valve-controlled cylinder position servo system has the advantages of large output force and large power. As characteristics of nonlinearity and uncertainty exist in the hydraulic servo system, it is difficult for the traditional PID control to meet the requirements of high precision and control. The active disturbance rejection control (ADRC) considers the uncertainty of the system and external disturbances as the total disturbance. In this paper, the valve-controlled cylinder servo system is designed based on ADRC, its working principle is described, and its mathematical model and cosimulation model based on MATLAB-AMESim are established. In the case of constant load, variable load, and long pipeline, the comparative simulation of ADRC and PID is carried out. The simulation results show that the ADRC can effectively suppress the disturbance of the internal parameter changes and external load changes of the hydraulic system and has strong robustness and high control accuracy. This study provides a reference for the application of ADRC in electrohydraulic servo systems.

Auto Disturbance Rejection Control Strategy for Large Inertia Servo System

2014 ◽  
Vol 599-601 ◽  
pp. 841-846
Author(s):  
Ke Zhang ◽  
Long Xu Jin
Keyword(s):  
Control Strategy ◽  
Disturbance Rejection ◽  
Control Plant ◽  
Servo System ◽  
Torque Ripple ◽  
System Response ◽  
Feedback Gain ◽  
Control Performance ◽  
Nonlinear Feedback ◽  
Disturbance Rejection Control

For large inertia servo system, improving the system response speed and control precision has always been a difficulty. This paper presents an improved auto disturbance rejection control (ADRC) strategy, which has good control performance for this kind of system. Firstly, transition process is arranged for input signal, which can solve the contradiction between overshoot and rapidity, can also increase the regulation range of feedback gain; secondly, linear extended state observer is designed to identify load changes and other fluctuations; then, for the control plant after observation compensation, a nonlinear feedback controller is designed to obtain better control performance and better disturbance rejection capability. The simulation results show that, compared with the traditional PI controller, with the control strategy suggested in this paper the system has rapid response but very little overshoot, and has strong ability to suppress interference. The design of this controller is simple, easy to implement in Engineering, so it may have important reference value for this kind of large inertia system. Keywords: servo control; large inertia; auto disturbance rejection control; torque ripple; low speed

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