Impact of Vane Friction Coefficient on Cam-Rotor Motor's Torque Performance

被引：0
|
作者：
Tan D. [1 ]
Tao J. [1 ]
Chen L. [1 ]
Wang X. [1 ]
机构：
[1] School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai
来源：
Shanghai Jiaotong Daxue Xuebao/Journal of Shanghai Jiaotong University | 2020年 / 54卷 / 02期
关键词：
Cam-rotor; Friction coefficient; Low speed performance; Resistance torque; Vane motor;
D O I：
10.16183/j.cnki.jsjtu.2020.02.007
中图分类号：
学科分类号：
摘要：
In order to study the influence of the blade friction coefficient on the torque performance of the hydraulic cam-rotor servo motor, a mechanical model of the vane motor torque is established. By analyzing the force on the vane, the relationship between the positive pressure exerted by the cam-rotor on the vane and the friction coefficient between the vane and the vane groove are derived. Based on this, the analytical formula between the friction coefficient and the resistance torque applied by the vane to the cam-rotor is derived. The MATLAB is used to simulate the mechanical model. The results show that the increase of the friction coefficient between the vane and the vane groove will reduce the positive pressure between the vanes, and increase the resistance torque of the vane to the cam-rotor, resulting in significant fluctuation of the motor output torque. The maximum and average values of the resistance torque are roughly linear to the friction coefficient. Reducing the geometrical tolerance and surface roughness between the vane and the vane groove can improve the low speed characteristics of the servo motor. © 2020, Shanghai Jiao Tong University Press. All right reserved.
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页码：160 / 166
页数：6
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