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    EXCITATION SYSTEM
    3.
    发明公开
    EXCITATION SYSTEM 审中-公开

    公开(公告)号：EP4425141A1

    公开(公告)日：2024-09-04

    申请号：EP24155168.8

    申请日：2024-02-01

    申请人： Rolls-Royce plc

    发明人： De Brett, Matthew ,  Schwingshackl, Christoph W

    IPC分类号： G01M7/02 ,  F01D21/00 ,  G01M15/14

    CPC分类号： F01D21/003 ,  G01M15/14 ,  G01M7/022

    摘要： Described herein is a non-contact excitation system for a spin rig comprising: a plurality of test piece elements for attachment to a test piece for rotation about an axis of rotation of the spin rig; and a plurality of exciter elements arranged around the axis of rotation, wherein the test piece elements and the exciter elements are magnetically attractive; wherein the test piece elements and/or the exciter elements comprise magnets; and wherein, in use, the exciter elements are arranged around the test piece; wherein each exciter element is axially and radially offset from the plurality of test piece elements. Also described is a method of testing a test piece using the system.

    EXCITATION SYSTEM
    4.
    发明公开
    EXCITATION SYSTEM 审中-公开

    公开(公告)号：EP4425140A1

    公开(公告)日：2024-09-04

    申请号：EP24155167.0

    申请日：2024-02-01

    申请人： Rolls-Royce plc

    发明人： De Brett, Matthew ,  Schwingshackl, Christoph W

    IPC分类号： G01M7/02 ,  G01M15/14

    CPC分类号： G01M7/022 ,  G01M15/14

    摘要： Described herein is a non-contact excitation system for a spin rig comprising: a plurality of test piece elements for attachment to a test piece for rotation about an axis of rotation of the spin rig; and a plurality of exciter elements arranged around the axis of rotation, wherein the test piece elements and the exciter elements are magnetically attractive; wherein the test piece elements and/or the exciter elements comprise magnets; each exciter element being moveable between an active position, in which a magnetic force is provided between each exciter element and at least one of the test piece elements, and an inactive position, in which the magnetic force between the exciter magnets and the at least one test piece element is reduced. Also described herein is a method of testing a test piece using the system.

    GAS TURBINE SENSOR FAILURE DETECTION UTILIZING A SPARSE CODING METHODOLOGY
    10.
    发明授权
    GAS TURBINE SENSOR FAILURE DETECTION UTILIZING A SPARSE CODING METHODOLOGY 有权

    公开(公告)号：EP3191797B1

    公开(公告)日：2018-08-01

    申请号：EP15767628.9

    申请日：2015-09-03

    申请人： Siemens Energy, Inc.

    发明人： GOH, Siong Thye ,  YUAN, Chao ,  CHAKRABORTY, Amit ,  EVANS, Matthew

    IPC分类号： G01D3/08

    CPC分类号： G01D3/08 ,  G01M15/14 ,  G05B23/024 ,  G06F17/18

    摘要： A method and system for recognizing (and/or predicting) failures of sensors used in monitoring gas turbines applies a sparse coding process to collected sensor readings and defines the L-1 norm residuals from the sparse coding process as indicative of a potential sensor problem. Further evaluation of the group of residual sensor readings is perform to categorize the group and determine if there are significant outliers (“abnormal data”), which would be considered as more likely associated with a faulty sensor than noisy data. A time component is introduced into the evaluation that compares a current abnormal result with a set of prior results and making the faulty sensor determination if a significant number of prior readings also have an abnormal value. By taking the time component into consideration, the number of false positives is reduced.