On-orbit calibration method for double-resolver fusion parameters of space robot joint

The invention discloses an on-orbit calibration method for dual-resolver fusion parameters of a space robot joint, solves the problems that the existing dual-resolver fusion parameters calibrated on the ground are poor in on-orbit adaptability and small in tolerance margin, and the abnormal jumping of a joint angle is easily caused, and belongs to the technical field of multi-sensor information fusion of space robots. The method comprises the steps that S1, whether movement of a to-be-calibrated joint in a positive and negative mechanical limiting range is limited or not is judged, if yes, the step S2 is executed, and if not, an on-orbit expected safety configuration of the space robot is determined, the space robot is adjusted to move to the expected safety configuration, and the step S2 is executed; s2, a joint controller is used for driving a joint to move in orbit in an open-loop mode, and double-rotary-transformation fusion data are grabbed, stored and unloaded to a ground station; and S3, the ground pro