ABNORMALITY DETERMINATION DEVICE AND ABNORMALITY DETERMINATION METHOD OF AUTOMATIC TRANSMISSION

摘要

PROBLEM TO BE SOLVED: To detect an unexpected abnormal sound and the abnormal sound by a complex factor.SOLUTION: The abnormality determination method for determining the abnormality by the generation of an abnormal sound in an automatic transmission 2 under a completion inspection from the vibration of the automatic transmission in the midst of the completion inspection is configured to obtain vibration data showing aging of the vibration of the automatic transmission under the complete inspection for each reference band dividing a frequency range (audible range) serving as an object of the inspection by a predetermined frequency width, compare the obtained vibration data and reference vibration data for abnormality determination generated based on a vibration data group stored in storage means for each reference band, determine that the automatic transmission under the complete inspection has an abnormality if the abnormality is recognized in either one of the reference bands, determine that the automatic transmission under the complete inspection has no abnormality when the abnormality is not recognized in all the reference bands, and add the vibration data obtained from the automatic transmission determined to have no abnormality to the vibration data group stored in the storage means.