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    METHOD AND DEVICE FOR ESTIMATING A RADIAL DEFORMATION OF A ROTARY SHAFT
    2.
    发明公开
    METHOD AND DEVICE FOR ESTIMATING A RADIAL DEFORMATION OF A ROTARY SHAFT 审中-公开

    公开(公告)号：EP4443104A1

    公开(公告)日：2024-10-09

    申请号：EP23166295.8

    申请日：2023-04-03

    申请人： ABB SCHWEIZ AG

    发明人： SAARINEN, Kari

    IPC分类号： G01B21/32 ,  G01B7/16 ,  G01P3/44

    CPC分类号： G01B21/32 ,  G01B7/22

    摘要： A method of estimating a radial deformation of a rotary shaft (290) in a loaded condition, comprising: recording a first radial displacement of the shaft's surface while rotating the shaft at a first angular speed corresponding to a relaxed condition of the shaft; on the basis of the first radial displacement, providing a first shape description representing the shaft's cross section in the relaxed condition; recording a second radial displacement of the shaft's surface while rotating the shaft at a second angular speed corresponding to said loaded condition of the shaft; on the basis of the second radial displacement, providing a second shape description representing the shaft's cross section in the loaded condition; and determining the radial deformation as a difference of the first and second shape descriptions.

    DETECTION OF BEARING FAULT
    3.
    发明公开
    DETECTION OF BEARING FAULT 审中-公开
    检测轴承故障

    公开(公告)号：EP3309530A1

    公开(公告)日：2018-04-18

    申请号：EP16193178.7

    申请日：2016-10-11

    申请人： ABB Schweiz AG

    发明人： SAARINEN, Kari ,  KANSANAHO, Jarno

    IPC分类号： G01M13/04

    CPC分类号： G01M13/045

    摘要： There is provided mechanisms for deciding whether a bearing is faulty or not. The method is performed by a controller. A method comprises obtaining a signal representing vibrations of the bearing. The vibrations are obtained during operation of the bearing. The method comprises applying signal segmentation to the signal in at least two frequency bands in order to identify any shock pulse in the signal. The method comprises deciding whether the bearing is faulty or not depending on whether or not the signal comprises said any shock pulse.

    摘要翻译： 提供了判断轴承是否有故障的机制。 该方法由控制器执行。 一种方法包括获得表示轴承的振动的信号。 振动是在轴承运行过程中获得的。 该方法包括对至少两个频带中的信号应用信号分段以识别信号中的任何冲击脉冲。 该方法包括根据信号是否包括所述任何冲击脉冲来判定轴承是否有故障。

    PREDICTION OF REMAINING USEFUL LIFETIME FOR BEARINGS
    6.
    发明公开
    PREDICTION OF REMAINING USEFUL LIFETIME FOR BEARINGS 审中-公开
    预测轴承剩余使用寿命

    公开(公告)号：EP3309529A1

    公开(公告)日：2018-04-18

    申请号：EP16193177.9

    申请日：2016-10-11

    申请人： ABB Schweiz AG

    发明人： SAARINEN, Kari ,  SANDER-TAVALLAEY, Shiva

    IPC分类号： G01M13/04

    CPC分类号： G01M13/04

    摘要： There is provided mechanisms for predicting remaining useful lifetime of a bearing of an electric podded azimuth thruster. A method is performed by a controller. The method comprises obtaining operational conditions of the bearing. The method comprises predicting the remaining useful lifetime of the bearing using the operational conditions. The lifetime of the bearing is divided in three separate phases. The remaining useful lifetime of the bearing is predicted differently in the three separate phases.

    摘要翻译： 提供了用于预测电动方位角推进器的轴承的剩余使用寿命的机构。 一种方法由控制器执行。 该方法包括获得轴承的操作条件。 该方法包括使用操作条件预测轴承的剩余使用寿命。 轴承的使用寿命分为三个阶段。 在三个单独的阶段中预测轴承的剩余使用寿命是不同的。

    DECISION OF FAULTY BEARING
    7.
    发明公开
    DECISION OF FAULTY BEARING 审中-公开

    公开(公告)号：EP3588049A1

    公开(公告)日：2020-01-01

    申请号：EP18180093.9

    申请日：2018-06-27

    申请人： ABB Schweiz AG

    发明人： SAARINEN, Kari

    IPC分类号： G01M13/04

    摘要： There is provided mechanisms for deciding whether a bearing is faulty or not. A method is performed by a controller. The method comprises obtaining, as a measurement signal, metal particles counting data, where the metal particles counting data indicates number of metal particles present in lubrication oil of the bearing per time unit. The method comprises differentiating the measurement signal, resulting in a differentiated measurement signal. The method comprises deciding, depending on how large share of a probability density estimate of the differentiated measurement signal is above a threshold value, whether the bearing is faulty or not.