Design of Position Control Method for Pump-Controlled Hydraulic Presses via Adaptive Integral Robust Control

被引:5
作者
Huang, Zhipeng [1 ]
Xu, Yuepeng [1 ]
Ren, Wang [1 ]
Fu, Chengwei [1 ]
Cao, Ruikang [1 ]
Kong, Xiangdong [1 ]
Li, Wenfeng [1 ]
机构
[1] Yanshan Univ, Sch Mech Engn, Qinhuangdao 066004, Peoples R China
基金
中国国家自然科学基金;
关键词
pump-controlled hydraulic presses; electro-hydraulic servo position control system; adaptive integral robust control; controller design; AXIAL PISTON PUMP;
D O I
10.3390/pr10010014
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
This paper takes the position control performance of pump-controlled hydraulic presses as the research object. The control methods are designed respectively for the two motion stages of rapid descent and slow descent of hydraulic presses in order to improve the control performance of the system. First of all, the accuracy model of the pump-controlled hydraulic presses position servo system (the pump-controlled hydraulic presses position servo system, which is called PCHPS) and its MATLAB/Simulink simulation platform are established. Based on the theoretical analysis and experimental data, the interference factors affecting the tracking accuracy and positioning accuracy of the PCHPS are analyzed. Then, an adaptive integral robust control (the adaptive integral robust control, which is called AIRC) for PCHPS is designed to reduce the influence of nonlinear factors on the system, and the effectiveness of the controller is verified by simulation. Finally, the position control experiment of PCHPS is designed, and the experimental results show that the AIRC can effectively reduce nonlinear factors such as unknown interference in the slow-down stage of the system. The positioning accuracy is raised to within 0.008 mm, which improves the process level of the hydraulic presses.
引用
收藏
页数:16
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