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Method and apparatus for diagnosing a mechanism

A rotorcraft and data technology, applied in the field of state systems, can solve problems such as defects, incompleteness, and complex data

Active Publication Date: 2008-05-07
EUROCOPTER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Interpretation of data is complex: long-term intervention of experts is required
[0016] Known tools for automatically analyzing data for the purpose of diagnosing mechanical faults in transmissions are incomplete and flawed; existing faults go undetected, while undocumented fault indications are sometimes produced by such analysis tools

Method used

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  • Method and apparatus for diagnosing a mechanism
  • Method and apparatus for diagnosing a mechanism

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Embodiment Construction

[0076] refer to Figure 17 , the device of the invention comprises a module 20 for reading data and connecting its output to the input of a module 21 for correcting scene changes, whereby the data for analysis are directed to module 21 .

[0077] The correction indicator or signal (i) obtained from the output of module 21 is directed to module 22 for separating the following variables: disturbance (s), noise (w), edge (b) and trend (c), and is also Leads to adder 23 which subtracts the disturbance(s) from this indicator.

[0078] The data of the respective components (b) and (c) are analyzed by the corresponding module 26 or 27 to calculate the rate of change of the values ​​of these components and transmit the result to the analysis module 30 .

[0079] The respective levels of the respective components (w) and (s) are calculated by two level calculation modules 24 and 25, respectively, which transmit their respective results to a module 28 for calculating the rate of change...

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Abstract

A method of analyzing variations in an indicator of the behavior of a mechanism, in which noise is extracted, and any discontinuities from an indicator in order to obtain a trend, variations in the trend are compared with one or more reference values; and a fault of the mechanism is indicated as a function of the result of the comparison. Any outlier data in the indicated data are search for and subtracted, and any edge data are extracted from the data obtained from the search operation.

Description

technical field [0001] The invention relates to a method of diagnosing an institution, an institution diagnosing program and a device adapted to execute the program to carry out the method. [0002] The technical field of the invention is that of systems for monitoring the status of rotorcraft. [0003] The invention is used in particular for the diagnosis of a transmission interposed between at least one engine and at least one rotor of a rotorcraft. [0004] Such mechanisms typically include multiple shafts and attachments mated with gears and used to transmit torque from the rotorcraft's engines to its rotors. Background technique [0005] The monitoring or detection of the occurrence of faults in mechanisms constitutes the subject of extensive research; reference may be made to patent document EP-0 838 048 concerning the detection of sensor faults. [0006] Certain aspects of monitoring turbine or engine status are described inter alia in patent documents US 6 301 572,...

Claims

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Application Information

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IPC IPC(8): G01H1/00G05B23/02
CPCG01H1/003G05B23/0221G01M13/028G05B23/02
Inventor J·威格
Owner EUROCOPTER