Abnormal flight recovery strategy evaluation method based on set pair extension coupling

The invention discloses an abnormal flight recovery strategy evaluation method based on set pair extension coupling, and the method comprises the steps: firstly analyzing the influence factors of an abnormal flight recovery strategy, and carrying out the grading of the influence factors; obtaining recovery strategy influence factor data of the to-be-evaluated abnormal flight; determining a'classic domain Rk 'and a'node domain Rm' of the evaluation indexes according to the influence factor data and the division grades; constructing a relation membership function between the to-be-evaluated abnormal flight influence factors and the evaluation levels; and calculating a weight vector and a comprehensive connection membership degree of the abnormal flight recovery strategy influence factors, and determining a recovery strategy level according to the comprehensive connection membership degree. According to the method, the uncertainty of the influence factors of the recovery strategy is quantified through set pair a