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公开(公告)号：US20210025781A1
公开(公告)日：2021-01-28
申请号：US16334561
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen , Jarno Kansanaho
IPC: G01M13/045
Abstract: A mechanism and method for deciding whether a bearing is faulty or not. The method is performed by a controller. The method includes obtaining a signal representing vibrations of the bearing. The vibrations are obtained during operation of the bearing. The method includes applying signal segmentation to the signal in at least two frequency bands in order to identify any shock pulse in the signal. The method includes deciding whether the bearing is faulty or not depending on whether or not the signal has any shock pulse.
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公开(公告)号：US09742181B2
公开(公告)日：2017-08-22
申请号：US15300563
申请日：2015-04-21
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen , Mirrasoul Mousavi
Abstract: A method of handling a reclosing operation of a recloser in a power system subject to a fault. The method includes a) determining a fault current for each electrical phase, the fault current being determined by a difference between measured current values and a sinusoidal model of a current prior to the fault, bI) calculating a respective sinusoidal model of the fault current for each electrical phase using samples taken before the fault, bII) selecting two sinusoidal models with the largest amplitude to represent faulted electrical phases, bIII) calculating a plurality of sub-features based on the two models, and bIV) determining a main feature value based on the plurality of sub-features, bV) determining, based on the main feature value, whether a temporary fault is present, and c) providing control instructions that the recloser is to reclose in the event that the fault is a temporary fault.
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公开(公告)号：US12013308B2
公开(公告)日：2024-06-18
申请号：US16334561
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen , Jarno Kansanaho
IPC: G01M13/045
CPC classification number: G01M13/045
Abstract: A mechanism and method for deciding whether a bearing is faulty or not. The method is performed by a controller. The method includes obtaining a signal representing vibrations of the bearing. The vibrations are obtained during operation of the bearing. The method includes applying signal segmentation to the signal in at least two frequency bands in order to identify any shock pulse in the signal. The method includes deciding whether the bearing is faulty or not depending on whether or not the signal has any shock pulse.
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公开(公告)号：US11630028B2
公开(公告)日：2023-04-18
申请号：US17254348
申请日：2019-06-25
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen
Abstract: 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.
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Patent Agency Ranking
公开(公告)号：US20190226944A1
公开(公告)日：2019-07-25
申请号：US16340944
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen , Shiva Sander-Tavallaey
IPC: G01M13/04
CPC classification number: G01M13/04
Abstract: 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 includes obtaining operational conditions of the bearing. The method includes 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.
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公开(公告)号：US10207801B2
公开(公告)日：2019-02-19
申请号：US15537162
申请日：2014-12-17
Applicant: ABB Schweiz AG
Inventor： Winston Garcia-Gabin , Bengt Stridh , Elina Vartiainen , Kari Saarinen , Per-Erik Modén , Veronika Domova
Abstract: A method for inspecting a solar panel of a solar power station is performed in a controller for an unmanned aerial vehicle, UAV, and includes the steps of: receiving an inspection request for a subset of the solar panels navigating, in a first stage, using radio signals, the UAV to an initial location in a vicinity of a particular solar panel of the subset of solar panels; positioning, in a second stage, the UAV using at least one near field sensor of the UAV; and capturing, using the infrared camera, an image of the particular solar panel.
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公开(公告)号：US20210262894A1
公开(公告)日：2021-08-26
申请号：US17254348
申请日：2019-06-25
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen
Abstract: 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.
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公开(公告)号：US10533928B2
公开(公告)日：2020-01-14
申请号：US16340944
申请日：2017-10-06
Applicant: ABB Schweiz AG
Inventor： Kari Saarinen , Shiva Sander-Tavallaey
IPC: G01M13/04
Abstract: 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 includes obtaining operational conditions of the bearing. The method includes 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.
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公开(公告)号：US20170110872A1
公开(公告)日：2017-04-20
申请号：US15300563
申请日：2015-04-21
Applicant: ABB SCHWEIZ AG
Inventor： Kari Saarinen , Mirrasoul Mousavi
Abstract: A method of handling a reclosing operation of a recloser in a power system subject to a fault. The method includes a) determining a fault current for each electrical phase, the fault current being determined by a difference between measured current values and a sinusoidal model of a current prior to the fault, bI) calculating a respective sinusoidal model of the fault current for each electrical phase using samples taken before the fault, bII) selecting two sinusoidal models with the largest amplitude to represent faulted electrical phases, bIII) calculating a plurality of sub-features based on the two models, and bIV) determining a main feature value based on the plurality of sub-features, bV) determining, based on the main feature value, whether a temporary fault is present, and c) providing control instructions that the recloser is to reclose in the event that the fault is a temporary fault.
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