Automatic centering characteristic analysis of hydraulic actuator operating points

被引：0
|
作者：
Zhang Z. [1 ]
Yin Y. [1 ]
Li S. [1 ]
Xiao Q. [2 ]
Xu Y. [2 ]
Lu C. [2 ]
机构：
[1] School of Mechanical Engineering, Tongji University, Shanghai
[2] Changchun Control Technology Co., Ltd., Aero Engine Corporation of China, Changchun
来源：
Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2021年 / 42卷 / 09期
关键词：
Centering characteristic; Centering structure; Hydraulic actuator; Mathematical model; Parametric analysis;
D O I：
10.11990/jheu.202006001
中图分类号：
学科分类号：
摘要：
To address the automatic centering problem of a hydraulic actuator, a mathematical model is established, and a simulation computing platform is built in this study. The correctness of the model is verified through the combination of simulations and tests, and the judgment conditions for the realization of the automatic centering function of the actuator are proposed. The effects of the structural parameters and arrangement of the centering holes on the centering characteristics of the actuator are analyzed. Results show that critical load forces correspond to different cooling hole sizes. When the piston is located on the right side of the centering hole and under pressure load, the larger the cooling and centering holes are, the higher the is centering speed of the piston, and the smaller is the centering position. The smaller the radius of the orifice without rod cavity, the lower is the centering speed and the smaller the centering position. The effect of the orifice with rod cavity on the centering characteristics is the same as that of the orifice without a rod cavity. The circumferentially arranged centering holes have smaller centering displacement and lead to the sudden change of the centering position under a certain load. © 2021, Editorial Department of Journal of HEU. All right reserved.
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页码：1380 / 1386and1394
相关论文
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