• 学报（中文） •

### 叶片摩擦系数对液压凸轮转子伺服马达转矩性能影响

1. 上海交通大学 机械与动力工程学院， 上海 200240
• 发布日期:2020-03-06
• 通讯作者: 陶建峰，男，副教授，电话(Tel.)：021-34206053；E-mail：jftao@sjtu.edu.cn.
• 作者简介:谭顿（1996-），男，湖北省荆州市人，硕士生，现主要从事液压伺服系统研究.
• 基金资助:
装配预研教育部联合基金资助项目（6141A02022120）

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

TAN Dun，TAO Jianfeng，CHEN Liangshen,WANG Xuyong

1. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
• Published:2020-03-06

Abstract: 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.