Upper limb artificial limb system and control method thereof

The invention discloses an artificial upper limb system and a control method thereof, and the system comprises a mechanical arm which comprises a shoulder joint, a big arm, a small arm, a wrist joint and a bionic manipulator; the control system comprises a myoelectricity patch used for collecting user incomplete skin surface myoelectricity signals; the brain-computer interface is used for collecting electroencephalogram signals; the hand back camera is used for identifying an image of a target object; the shoulder joint and elbow joint controller is in serial port communication connection with the wrist joint and finger controller and is used for receiving, analyzing and processing the muscle electric signals and the electroencephalogram signals to extract the user motion intention in the process that the user moves to the target object in a no-load mode, receiving the information of the target object and controlling the motor driver to drive the mechanical arm to move; the motor encoder is used for extractin