Zero-gravity multi-joint rehabilitation training system

The invention discloses a zero-gravity multi-joint rehabilitation training system which comprises a base assembly, a power assembly, a control assembly, a seat assembly and a computer assembly. A supporting rod is arranged on the base assembly, and the power assembly is rotationally arranged at the top end of the supporting rod. The power assembly comprises a shell, an output rod, a power module and a sensor module. The power module comprises a motor and a reduction gearbox which are installed in the shell, an output shaft of the motor is connected with the input end of the reduction gearbox, the output rod is fixedly connected with the output end of the reduction gearbox, and the power module provides power for the output rod; the sensor module transmits collected torque data to the control assembly, and the control assembly is connected with the computer assembly. According to the invention, the influence of limb gravity and accessory gravity on the test result is eliminated, and the accuracy and comparabil