Control strategy of electro-hydraulic position servo system for surface milling machine based on active disturbance rejection control

被引：0
作者：
Xu L. [1 ,2 ]
Cai L. [1 ,2 ]
Li J. [1 ,2 ]
Hu D. [1 ,2 ]
Ma H. [1 ,2 ]
机构：
[1] School of Mechatronics Engineering, Henan University of Science & Technology, Luoyang
[2] Collaborative Innovation Center of Machinery Equipment Advanced Manufacturing of Henan Province, Henan University of Science & Technology, Luoyang
来源：
Cai, Liujin (yycailj@163.com) | 2018年 / CIMS卷 / 24期
基金：
中国国家自然科学基金;
关键词：
Active disturbance rejection control; Electro-hydraulic position servo system; PID; Surface milling machine; Valve controlled asymmetrical cylinder;
D O I：
10.13196/j.cims.2018.11.012
中图分类号：
学科分类号：
摘要：
To improve the position control accuracy of electro-hydraulic servo system for surface milling machine, a control strategy of milling face's electro-hydraulic position servo system based on Active Disturbance Rejection Control (ADRC) technique was proposed. According to the characteristics of valve controlled asymmetrical cylinder in two different conditions of extend and retract, the corresponding fluid dynamics model were established, and the transfer function of system was deduced by other links. The three order ADRC strategy was designed on the basis of the system characteristics, and the extended state observer was used to estimate and compensate the time-varying of system parameters and external disturbance. The performance of designed control strategy was verified by simulation and industrial field experiments. The results showed that ADRC strategy could make the position output of system not affect by the change of control object's parameters, and had better internal robustness and anti-interference ability than traditional PID control strategy, which could suppress the external disturbances on the system effectively. © 2018, Editorial Department of CIMS. All right reserved.
引用
收藏
页码：2770 / 2778
页数：8
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