Research on Vane End Face of Cam-Rotor Vane Servo Motor Based on Disturbing Torque

• Published in: Shanghai jiao tong da xue xue bao Vol. 21; no. 6; pp. 641 - 647
• Main Author: 袁璠 王旭永 陶建峰 苗中华
• Format: Journal Article
• Language: English
• Published: Shanghai Shanghai Jiaotong University Press 01.12.2016; Springer Nature B.V
• Subjects: Actuators; Architecture; Computer Science; Contact force; Dynamical systems; Electrical Engineering; Engineering; Flow rates; Flow velocity; Friction; Hydraulics; Life Sciences; Materials Science; Motor task performance; Motors; Pressure; Product design; Pulsation; Servomechanisms; Servomotors; Simulation; Theoretical analysis; Torque; Vanes; normal contact force; cam-rotor vane motor (CRVM); disturbing torque; reduced oil pressure; TH 137.3; vane end face (VEF); servo performance
• ISSN: 1007-1172; 1995-8188
• DOI: 10.1007/s12204-016-1776-2

Cam-rotor vane motor （CRVM） is one of the new continuous hydraulic servo motors with the char- acteristics of no pulsation of instantaneous flow rate and output torque, small volume and rotating inertia. It is one of the appropriate actuators for hydraulic servo system which has good dynamic and steady-state perfor- mance requirements. The ideal output torque of CRVM is pulseless, but the actual output torque of CRVM is pulsating. This is caused by the disturbing torque of contact components, especially the friction between vane and cam-rotor. In order to get better performance of CRVM, which means more stable output torque and smaller disturbing torque, we discuss four kinds of vane end faces （VEFs）. Analytic formulae of the normal contact force and the disturbing torque caused by the vane are derived from systematical force analysis. The normal contact force and the disturbing torque vary through a period under different VEF, and the reduced oil pressure is sim- ulated in this paper. The simulation shows that the VEF with the proper round and reduced oil pressure can significantly decrease the disturbing torque and get better servo performance. The experiment results verify the correctness of the theoretical analysis and simulation.