Driving sound diagnosis system, driving sound diagnosis method, and machine learning device for driving sound diagnosis system

摘要

The drive sound diagnostic system (10) includes a drive sound detection unit (11) that detects a drive sound of an actuator or a driven machine, a drive position of an actuator, a drive speed, or a driving state detection that acquires force generated by driving in time series. A section (12), a sound vibration time series spectrum acquisition section (15), a feature point extraction section (16) and a factor determination section (18). The sound vibration time series spectrum acquisition unit outputs the time series spectrum in which the power of the frequency spectrum calculated from the time series data of the driving sound is associated with the frequency and the time. The feature point extraction unit outputs feature point data that is a combination of the frequency of the feature point in the time-series spectrum, the time, and the drive position, drive speed, or force generated by the drive of the actuator at that time. The factor determination unit compares the numerical value range and the numerical value of the characteristic point data when the combination of the frequency or time containing the characteristic point for each phenomenon and the driving data at that time is made into the multidimensional data, and the driving sound is generated. Determine the factors.