Method for determining measurement uncertainty of wind tunnel strain balance in partitioned manner

The invention belongs to the technical field of aerospace force measurement test device calibration, and particularly relates to a method for determining the measurement uncertainty of a wind tunnel strain balance in a partitioned manner, which comprises the following steps of: determining a plurality of calibration load intervals for static calibration of the balance; determining a loading load implementation table and a comprehensive loading error verification load implementation table for static calibration of the balance, carrying out six-component simultaneous loading on the calibrated balance, and obtaining a Wheatstone bridge actual output signal value of each component of the calibrated balance and a Wheatstone bridge verification output signal value of each component of the balance; a response surface method is adopted, and according to different calibration load intervals and the actual output signal value of the Wheatstone bridge of each component of the balance, the working formula of the calibrat