Aircraft hydraulic system performance abnormity identification method, device, equipment and medium

The invention discloses an aircraft hydraulic system performance abnormity identification method, device and equipment and a medium, and relates to the technical field of abnormity identification of aircraft hydraulic systems. The method comprises the steps of obtaining historical flight parameter data of a target aircraft hydraulic system; performing feature extraction on the historical flight parameter data of the target aircraft hydraulic system to obtain flight parameter feature data; based on the flight parameter characteristic data, obtaining a composite distance model between the flight parameter characteristic data of any two flight sorties of the target aircraft; based on the composite distance model, obtaining an association distance model of the flight parameter characteristic data between a certain flight sortie and other flight sorties of the target aircraft; and based on the correlation distance model, identifying the abnormal sortie of the hydraulic system of the target aircraft. By means of th