Investigation on Friction Torque Behavior in Space Robot Drive Assembly at High Rotating Speed
The friction torque behavior of drive assembly with harmonic drive(HD)at high and low temperature vacuum environment was investigated in this paper.Experimental setup was developed base on vacuum test equipment with drive assembly,XBS-60-120 HD was adopted as the reducer,and DLC+LWYZ-5 space lubricating grease was used in the flexible bearing and tooth surface.The temperature varied from-40℃to+120℃,and the rotating speed of the motor was elevated to 2520 r/min.The active output drive torque of the drive assembly varied under its maximum torque at every temperature in a particular rule.Torque sensor was equipped to measure the back driving torque,and the active output drive torque was calculated by current and torque-current coefficients of the motor.The experiment results showed that back driving torque increased with the decrease of temperature and increased in driving torque.
万方数据
维普
