Information processing system to calculate damage in oil in an electric motor

Abstract

A processing device of an information processing device performs a search process. The search process includes: a first step of calculating a relative frequency distribution of each feature of the original data; a second step of setting a plurality of time windows for clipping data of a partial period of the original data; a third step of clipping data from the original data; a fourth step of calculating a relative frequency distribution of each feature of extracted data; and a fifth step of calculating an error between the relative frequency distribution of the original data and the relative frequency distribution of the extracted data, a trial from the second step to the fifth step being repeatedly performed by changing settings of the time windows. The processing device calculates an index value using the extracted data with the error equal to or less than a threshold.