Elektromotorsystem, Lebensdauerbeurteilungsvorrichtung, Lebensdauerbeurteilungsverfahren und Lebensdauerbeurteilungsprogramm

Details

Veröffentlichungs-Nr.

EP4768701

Anmeldetag

17. Oktober 2024

Veröffentlichung

24. April 2025

Rechtsraum

EP

Abstract

An electric motor system includes a motor, a hydrodynamic air bearing that rotatably supports a shaft of the motor, a power conversion circuit that provides a drive current to the motor, and a controller including a life evaluation module that evaluates a life of the air bearing. The life evaluation module has a data input unit that obtains rotation speed history data which is a time history of a rotation speed of the motor, a sliding distance acquisition unit that obtains, using the rotation speed history data, a sliding distance when the shaft is in a state of rotating while being in contact with the air bearing, and an evaluation value calculation unit that evaluates the life of the air bearing using the sliding distance.

Anmelder

Firma

IHI Corporation

Land

🇯🇵 Japan