Patent ID: 8798848

Claim:
A computerized method for detecting whether performance of an aircraft component is in a decline period, comprising: obtaining one or more detection parameters reflecting operation status of the aircraft component and storing the detection parameters in a memory store; comparing data of the one or more detection parameters with respective predetermined values, at least one of said values provided as a reference slope of a change trend of at least one detection parameter, and wherein the step of comparing comprises calculating a slope of a change trend of the measured values of the one or more detection parameters in a period; using a processor to determine whether the performance of the aircraft component is in the decline period based on the comparison results; and performing a smooth processing on the measured values of at least one of the detection parameters, wherein the smooth processing adopts following formula: X new =C 1 X smooth +C 2 X old wherein, X old is the measured value, X new is a value after the smooth processing, X smooth is a value of adjacent points after the smooth processing or is an average value of several adjacent points, C1 and C2 are weighted values.