Pose calibration method and device for wind tunnel test attack angle-double rotating shaft mechanism

The invention relates to a pose calibration method and equipment for an attack angle-double-rotating-shaft mechanism in a wind tunnel test, and aims at the attack angle-double-rotating-shaft mechanism in the wind tunnel test to establish a relationship between a tail shaft attitude angle and each rotating shaft rotation value, thereby obtaining an undetermined error parameter in the attack angle-double-rotating-shaft mechanism. The method comprises the following steps: firstly, determining an inverse solution motion mathematical model of an attack angle-double-rotating-shaft mechanism according to theoretical derivation, then setting initial zero values of rotating values of three rotating shafts, then measuring attitude angles in a calibration attitude angle sequence by using an ROMER absolute measuring machine, and obtaining undetermined error parameters in a parameterized model by adopting a nonlinear least square method, so as to determine the attitude angle of the attack angle-double-rotating-shaft mecha