Rotation device and method for determination of a condition of a bearing arrangement

Abstract

The present disclosure refers to a rotation device, particularly a flow producing device, as well as methods that are configured to determine a condition of a bearing arrangement of rotation device. The bearing arrangement bears a rotor of an electric motor and/or a rotor arrangement including the rotor rotatingly around a rotating axis. At least one rotation parameter is determined that describes the rotation around the rotation axis, as well as at least one power parameter that describes the power of the electric motor. The determination of the at least one rotation parameter and the at least one power parameter is carried out to a current observation point in time, particularly at least at one observation point in time during a determination time phase. The at least one rotation parameter and the at least one power parameter are evaluated in relation to one another and therefrom a condition parameter is determined describing the condition of bearing arrangement. Particularly for this purpose a linear component of a power-rotation-correlation between the at least one current rotation parameter and the at least one current power parameter is used.

Dependencies are inferred from the claim text.