Method for measuring full-motion horizontal tail rotating mode of airplane

The invention relates to a method for measuring a full-motion horizontal tail rotating mode of an airplane, which comprises the following steps of: firstly, identifying an initial dimensionless frequency of a full-motion horizontal tail rotating mode by adopting a phase separation technology, and then obtaining a force frequency curve of the full-motion horizontal tail rotating mode by adopting aphase resonance mode extraction technology near the frequency and gradually increasing exciting force from small to large; when the force frequency curve of the full-motion horizontal tail rotating mode is obtained, processing the force of the exciting force by a resultant moment M. According to the method, the nonlinear influence of friction and gaps on the full-motion horizontal tail rotation mode can be more completely considered, the force-frequency curve of the full-motion horizontal tail rotation mode measured by the method is used as the input of horizontal tail flutter calculation, theflutter calculation can b