Motor bearing wear state estimation device, bearing wear state estimation method, bearing wear state estimation program, and canned motor pump

Abstract

The motor bearing wear state estimation device (A) estimates a wear state of bearings () by using a plurality of detection coils (Cto C). The device includes a storage (A) storing a first learning model (M, M) and a second learning model (M, M), a retrieval unit () retrieving each signal, and an estimation unit () estimating the wear state by inputting a first difference signal, a second difference signal, and an amplitude signal into the first learning model, and by inputting a thrust difference signal and the amplitude signal into the second learning model. The amplitude signal is a first amplitude signal generated based on each detection signal of first radial detection coils and/or each detection signal of second radial detection coils, or a second amplitude signal generated based on a first combined signal and a second combined signal.