Robot joint control system and method

The embodiment of the invention discloses a robot joint control system and method. The system comprises a main controller, a first encoder, a current acquisition module and a target motor, first operation information of the target motor is obtained through the first encoder mechanically connected with the target motor, operation control current of the target motor is obtained through the current acquisition module electrically connected with the target motor, and then the target motor is controlled through the main controller. The reference operation information is determined according to the operation control current, and whether the first encoder has a fault is determined according to the first operation information and the reference operation information, so that fault detection of the encoder in the robot joint control system is realized, and joint driving control abnormity caused by no detection of the encoder fault is avoided; and the operation safety of the system is improved. 本发明实施例公开了一种机器人关节控制系统及方法。该