Robot calibration method for digital twinning

The invention discloses a digital twinning-oriented robot calibration method. The method comprises the following steps: establishing a digital twinning model for robot calibration; a robot calibration working platform is built; robot calibration operation is executed; space pose points of an end effector of the robot are searched according to an optimization algorithm; subtracting a space pose point of an ideal robot end effector in the obtained optimal measurement pose group from the measurement pose to obtain a pose error; and the pose error of the robot is compensated. On a robot calibration model, a robot rigid-flexible coupling error model is established according to a linear superposition principle, so that the accuracy of the model is improved; in the aspect of robot calibration work, a detailed and simple robot calibration process is given, and the complexity of the robot calibration work is reduced; in the aspect of data measurement, an optimal measurement pose group of spatial pose points of a robot