A Fuzzy Sliding Mode Electro-Hydraulic Proportional Servo Control System Based on Variable Dead-Zone Compensation

被引：0
|
作者：
Peng X. [1 ]
Liu Y. [2 ]
Chen H. [3 ]
Bai Y. [1 ]
Wei S. [1 ]
机构：
[1] School of Automation, Beijing Institute of Technology, Beijing
[2] Helicopter Regiment of the First Mobile Corps of CAPF, Shanxi, Jinzhong
[3] Space Times Fei Hong Technology Co., Ltd., Beijing
来源：
Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology | 2023年 / 43卷 / 09期
关键词：
dead-zone compensation; electro-hydraulic proportional servo system; fuzzy control; sliding mode control;
D O I：
10.15918/j.tbit1001-0645.2022.231
中图分类号：
学科分类号：
摘要：
Aiming at the error caused by spool dead zone and cylinder asymmetry in proportional valve-controlled asymmetric hydraulic cylinder control, a fuzzy sliding mode controller with variable dead zone compensation was designed, and the control accuracy and stability of this controller under no-load and negative load conditions were studied. The simulation results show that the sliding mode control method with variable dead-zone compensation can weaken the "flat top" phenomenon and lag caused by the dead-zone characteristics of the spool and the asymmetry of the cylinder. In no-load test, the maximum control error of general sliding mode control method with variable dead-zone compensation is ±5 mm, and that of fuzzy sliding mode control method with variable dead-zone compensation is ±2.5 mm. In the negative load test, due to adding the counterbalance valve, the shaking problem of the piston rod can be solved when it extends under the negative load of 20 kg. © 2023 Beijing Institute of Technology. All rights reserved.
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页码：971 / 978
页数：7
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