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公开(公告)号：EP3663741B1
公开(公告)日：2024-11-06
申请号：EP18840775.3
申请日：2018-08-01
IPC分类号： G01M13/04 , G01H17/00 , G01H13/00 , G01M13/045
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2.发明公开
公开(公告)号：EP4368959A1
公开(公告)日：2024-05-15
申请号：EP22837446.8
申请日：2022-06-17
申请人： NSK Ltd.
发明人： YUKAWA Kinji
IPC分类号： G01M99/00 , F03D80/70 , G01H17/00 , G01M13/04 , G01M13/045
CPC分类号： Y02E10/72 , G01M13/045 , G01H17/00 , F03D80/70 , G01M99/00 , G01M13/04 , F16C2233/0020130101 , F16C19/527
摘要： Provided is a state monitoring apparatus for a mechanical apparatus including a rolling bearing, the apparatus including: a first acquisition means that acquires vibration information or sound information of the rotating rolling bearing; a second acquisition means that acquires a rotation speed of the rotating rolling bearing; a derivation means that derives a timing of sampling data from the vibration information or the sound information on the basis of the rotation speed so that a sampling number per one rotation of the rolling bearing becomes a predetermined value; and a generation means that samples data from the vibration information or the sound information on the basis of the timing derived by the derivation means to generate monitoring data.
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公开(公告)号：EP4357740A1
公开(公告)日：2024-04-24
申请号：EP22824591.6
申请日：2022-03-22
申请人： Hitachi, Ltd.
发明人： ENDO Takashi , IWATA Takeshi , ROKUNOHE Toshiaki , KOYAMA Hikaru , DOHI Kota
摘要： It is possible to accurately grasp the state of a circuit breaker by diagnosis using a sound. An acoustic diagnosis device extracts a first feature amount of an acoustic signal in which a delay of an acoustic signal collected by a microphone is corrected, the delay being generated from a relative distance between the circuit breaker and the microphone, during a normal operation of the circuit breaker for various events of the circuit breaker, and creates a plurality of event models for managing data regarding the first feature amount of the corrected acoustic signal. The acoustic diagnosis device extracts a second feature amount of an acoustic signal in which a delay of an acoustic signal collected by the microphone is corrected, the delay being generated from a relative distance between the circuit breaker and the microphone, during diagnosis of the circuit breaker, calculates a similarity between the second feature amount of the acoustic signal during the diagnosis and the first feature amount in the plurality of event models for each time, estimates the time at which the similarity becomes highest, as an occurrence timing of each event, and diagnoses the circuit breaker from a plurality of estimated occurrence timings.
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公开(公告)号：EP4339564A1
公开(公告)日：2024-03-20
申请号：EP23194183.2
申请日：2023-08-30
申请人： Robert Bosch GmbH
IPC分类号： G01H1/00 , G01M13/045 , G01H17/00 , G01M13/028
摘要： Die Erfindung betrifft ein Verfahren, ein Computerprogramm und eine Vorrichtung (10) zum Erfassen von Schwingungen eines Bauteils (1), wobei ein erstes Schwingungssignal von einem ersten Mikrofon (2) erfasst wird, das in mechanischen Kontakt mit dem Bauteil (1) angeordnet ist, wobei ein zweites Schwingungssignal von einem zweiten Mikrofon (3) erfasst wird, dass nicht in mechanischen Kontakt mit dem Bauteil (1) angeordnet ist, wobei aus dem ersten Schwingungssignal und aus dem zweiten Schwingungssignal ein Ergebnissignal ermittelt wird.
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公开(公告)号：EP3407032B1
公开(公告)日：2023-09-13
申请号：EP18170676.3
申请日：2018-05-03
发明人： REINDL, Hartwig , OLBRICH, Peter
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公开(公告)号：EP4220105A1
公开(公告)日：2023-08-02
申请号：EP21872625.5
申请日：2021-09-28
发明人： KONDOU Takahiro , SUMIKAWA Taiki
摘要： This vibration analysis method is a method for analyzing vibrations of a large-scale system with local strong nonlinearities, and includes a process (1) of applying the new type of complex modal analysis to an equation for a linear state variable to convert the equation to a real modal equation for lower-order modes, and correcting an effect of higher-order modes of the linear state variable from an equation for a nonlinear state variable and eliminating the modes, a process (2) of selecting secondary modes, which have a large effect on a solution of an original large-scale system, from the real modal equation for lower-order modes, and, in relation to secondary modes, which have a small effect, eliminating the modes thereof by incorporating the effect to the equation for nonlinear state variables as a correction term obtained from an approximate solution of the real modal equation for lower-order modes, and deriving the dimension reduced model, and a process (3) of calculating a frequency response by using the dimension reduced model.
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公开(公告)号：EP3733818B8
公开(公告)日：2023-03-22
申请号：EP18894438.3
申请日：2018-12-21
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8.发明公开
公开(公告)号：EP4130702A1
公开(公告)日：2023-02-08
申请号：EP22187739.2
申请日：2022-07-29
申请人： Trimble Inc.
发明人： Porter, Miles, R
摘要： A sampling device receives, from a transducer computing device located within a predefined proximity to an equipment in an operating environment, a vibration sample from the operating environment and increments a retrain counter. In response to determining that the incremented retrain counter does not meet or exceed a retrain threshold, the sampling device predicts, using a model, an anomalous or non-anomalous designation for the vibration sample and a cluster assignment, to a particular cluster of a set of clusters, for the vibration sample when the model predicts the non-anomalous designation for the vibration sample. The sampling device receives a subsequent vibration sample and further increments the retrain counter. In response to determining that the further incremented retrain counter exceeds a retrain threshold, the sampling device receives a subsequent set of vibration samples and retrains, using the subsequent vibration sample and the subsequent set of vibration samples, the model.
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公开(公告)号：EP4095497A1
公开(公告)日：2022-11-30
申请号：EP21745108.7
申请日：2021-01-18
申请人： NSK Ltd.
发明人： SAHARA, Juntaro , OSHIMA, Shunichi
IPC分类号： G01H17/00 , G01M99/00 , G01M13/04 , G01M13/045
摘要： A noise canceler includes a signal obtaining unit that obtains an observation signal obtained by sampling vibration of an apparatus; a signal delay unit that obtains a delay signal by delaying the observation signal obtained by the signal obtaining unit; and a Kalman filter processing unit that applies, to the observation signal and the delay signal, a Kalman filter that adapts a filter coefficient so as to reduce a residual signal between the observation signal and an estimated signal estimated based on the observation signal and the delay signal by an adaptive filter that incorporates the Kalman filter, and outputs the residual signal.
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10.发明公开
公开(公告)号：EP4089551A1
公开(公告)日：2022-11-16
申请号：EP21173273.0
申请日：2021-05-11
发明人： Yamada, Shuhei , Geluk, Theo
摘要： The invention relates to a method of determining a transfer function (TRF) of a module (MDL). To improve accuracy of such methods the invention proposes the steps:
a. measuring a first set-of-sensors-output (SO1) applied to said module (MDL) and measuring a second set-of-sensors-output (SO2),
b. deducing a transfer function (TRF) of said module (MDL), wherein a transfer-function matrix (MTM) is a quadratic n-dimensional matrix for said n degrees of freedom (DOF),
c. selecting a submatrix (SBM),
d. determining for said selected submatrix (SBM) a corresponding rotational matrix (RTM) which improves the symmetry of the submatrix (SBM),
e. generating a main rotational matrix (MRM) to transform said main transfer-function matrix (MTM),
f. providing the transfer function (TRF) with said transformed transfer-function matrix (TTM).
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