Prediction of remaining useful life of bearings

An effective life and bearing technology, which is applied in mechanical bearing testing, mechanical component testing, machine/structural component testing, etc., can solve problems such as difficulty in accurately predicting the remaining effective life of podded azimuth thruster bearings and troublesome monitoring. Minimize maintenance costs and avoid unplanned downtime

Active Publication Date: 2022-01-07
ABB (SCHWEIZ) AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such monitoring can be cumbersome and therefore it may be difficult to accurately predict the remaining useful life (RUL) of podded azimuth thruster bearings

Method used

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  • Prediction of remaining useful life of bearings
  • Prediction of remaining useful life of bearings
  • Prediction of remaining useful life of bearings

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Embodiment Construction

[0030] The inventive concepts now will be described more fully hereinafter with reference to the accompanying drawings, in which certain embodiments of the inventive concepts are shown. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided by way of example so that this disclosure will be thorough and complete, and the present invention The scope of the concept is fully conveyed to those skilled in the art. Like reference numerals refer to like elements throughout the specification. Any steps or features shown in dashed lines should be considered optional.

[0031] In practice, the true lifetime of a component may be random in nature. As a result, large amounts of field data may be required in order to develop appropriate forecasting methods. In many cases, such data are not available. The azimuth thruster disclosed above is an exception to this ...

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Abstract

Mechanisms are provided for predicting the remaining useful life of bearings of electric podded azimuth thrusters. The method is executed by the controller. The method includes obtaining operating conditions of the bearing. The method includes using operating conditions to predict the remaining useful life of the bearing. The life of a bearing is divided into three separate phases. In three separate phases, the remaining useful life of the bearing is predicted differently.

Description

technical field [0001] Embodiments presented herein relate to methods, controllers, computer programs and computer program products for predicting the remaining useful life of a bearing. Background technique [0002] In general, electric podded azimuth thrusters are marine propulsion units consisting of a fixed-pitch propeller mounted on a large steerable gondola ("the gondola") that also contains a motor to drive the propeller electric motor. Thus, a podded azimuth thruster combines the actions of rudder, thruster and propeller into one rotary propulsion unit. In a podded azimuth thruster unit, the electric motor is mounted inside the propulsion unit and the propeller is directly connected to the motor shaft. By avoiding the use of conventional propeller shafts, the propeller can be positioned further below the stern in clear water, providing greater hydrodynamic and mechanical efficiency. Further, it increases the flexibility of the general layout of the ship's power st...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/04G01M13/045
CPCG01M13/04
Inventor K·萨里南S·桑德-塔瓦莱伊
Owner ABB (SCHWEIZ) AG
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