In order to ensure that the support device rotates at the required angular velocity in the process of realizing the precise positioning of the angle of attack α and the angle of sideslip β, and to ensure that the center of the model does not deviate from the axis of the wind tunnel in the process of rotation, the mathematical analysis of the speed and position motion relationship of the angle of attack α mechanism, the angle of sideslip β mechanism and the Y-direction lifting mechanism is carried out. The complex motion is calculated in detail, and the multi-axis linkage speed and position control method is studied in depth. The virtual spindle is controlled. The results show that the method of α, β, Y mechanism position follow-up realizes the high-precision speed and position control of angle of attack α, sideslip angle β and Y mechanism, and the accuracy is controlled within 0.02 ° and 2 mm. Meet the design requirements.