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    METHOD AND APPARATUS FOR RECONSTRUCTING IN-CYLINDER PRESSURE AND CORRECTING FOR SIGNAL DECAY
    83.
    发明公开
    METHOD AND APPARATUS FOR RECONSTRUCTING IN-CYLINDER PRESSURE AND CORRECTING FOR SIGNAL DECAY 审中-公开
    方法和装置进行重构的气缸内压和纠正信号衰减

    公开(公告)号：EP2459980A1

    公开(公告)日：2012-06-06

    申请号：EP10803765.6

    申请日：2010-07-27

    申请人： Westport Power Inc.

    发明人： HUANG, Jian

    IPC分类号： G01M15/12 ,  F02D35/02 ,  F02D41/14 ,  F02P5/15

    CPC分类号： F02D41/28 ,  F02D35/024 ,  F02D35/027 ,  F02D2041/1432 ,  F02D2041/281 ,  F02D2041/286 ,  F02D2041/288 ,  G01M15/08 ,  G01M15/12

    摘要： A method comprises steps for reconstructing in-cylinder pressure data from a vibration signal collected from a vibration sensor mounted on an engine component where it can generate a signal with a high signal-to-noise ratio, and correcting the vibration signal for errors introduced by vibration signal charge decay and sensor sensitivity. The correction factors are determined as a function of estimated motoring pressure and the measured vibration signal itself with each of these being associated with the same engine cycle. Accordingly, the method corrects for charge decay and changes in sensor sensitivity responsive to different engine conditions to allow greater accuracy in the reconstructed in-cylinder pressure data. An apparatus is also disclosed for practicing the disclosed method, comprising a vibration sensor, a data acquisition unit for receiving the vibration signal, a computer processing unit for processing the acquired signal and a controller for controlling the engine operation based on the reconstructed in-cylinder pressure.

    Structural integrity monitoring system
    84.
    发明公开
    Structural integrity monitoring system 有权
    系统监测的结构完整性

    公开(公告)号：EP2244081A3

    公开(公告)日：2011-10-05

    申请号：EP10160633.3

    申请日：2010-04-21

    申请人： General Electric Company

    发明人： Dawson, Richard Nils ,  Barnes, Gary Randall ,  Dilorenzo, Peter Anthony

    IPC分类号： G01M15/12

    CPC分类号： G01M15/12

    摘要： A structural integrity monitoring system (60) includes a structure (2), at least two vibration monitoring devices (20-25) mounted to the structure. Each of the at least two vibration monitoring devices (20-25) outputs a vibration response signal. The structural integrity monitoring system (60) also includes a controller (61) operatively connected to each of the at least two vibration monitoring devices (20-25). The controller (61) is configured to calculate a predicted vibration response based upon a vibration mode shape and the vibration response signal. The controller (61) then compares the predicted vibration response against a measured vibration response to detect changes in the structure (2).

    Systems and methods for sensor-level machine monitoring
    85.
    发明公开
    Systems and methods for sensor-level machine monitoring 有权
    Systeme und Verfahren zurMaschinenüberwachungmittels Sensoren

    公开(公告)号：EP2175256A2

    公开(公告)日：2010-04-14

    申请号：EP09171295.0

    申请日：2009-09-25

    申请人： General Electric Company

    发明人： Tompkins, Marc Steven ,  Hall, Richard Herman

    IPC分类号： G01M13/04 ,  G01M15/05 ,  G01M15/12

    CPC分类号： G01M13/045 ,  G01M13/04 ,  G01M15/05 ,  G01M15/12 ,  G05B23/0229

    摘要： Systems and methods for monitoring a machine are provided. A system (200) may include a first sensor (202a) including a first processor (204a) and a second sensor (202b) including a second processor (204b). The system (200) may further include a communication trunk (206) in communication with the first sensor (202a) and the second sensor (202b), and operable to communicate sensor data between each of the first processor (204a) and the second processor (204b). The first sensor (202a) and the second sensor (202b) are operable to generate sensor data associated with at least one machine condition. Further, at least one of the first processor (204a) or the second processor (204b) is operable to analyze sensor data generated by each of the first sensor (202a) and the second sensor (202b) and determine at least one machine fault based at least in part on the sensor data.

    摘要翻译： 提供了监控机器的系统和方法。 系统（200）可以包括包括第一处理器（204a）的第一传感器（202a）和包括第二处理器（204b）的第二传感器（202b）。 系统（200）还可以包括与第一传感器（202a）和第二传感器（202b）通信的通信中继线（206），并且可操作以在第一处理器（204a）和第二处理器 （204B）。 第一传感器（202a）和第二传感器（202b）可操作以产生与至少一个机器状态相关联的传感器数据。 此外，第一处理器（204a）或第二处理器（204b）中的至少一个可操作以分析由第一传感器（202a）和第二传感器（202b）中的每一个产生的传感器数据，并且确定至少一个基于机器故障 至少部分地在传感器数据上。