Helicopter transmission system bearing detection method driven by fault sensitive coding network

A transmission system and coding network technology, which is applied in the field of bearing detection of helicopter transmission system, can solve the problems of lack of reconfigurability, loss of characteristic information, and inappropriate condition monitoring application scenarios, so as to improve task adaptability and avoid robustness. The effect of poor stickiness, poor generalization, and strong feature extraction ability

Pending Publication Date: 2021-07-30
XI AN JIAOTONG UNIV
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Problems solved by technology

[0004] However, there are still three shortcomings in the existing methods: 1) The process of feature extraction often depends on human experience, and the extracted features have information loss and are not reconfigurable
2) Some methods for condition monitoring do not adopt a classification strategy, and are not suitable for condition monitoring application scenarios where only health status data exists
3) A large number of anomaly monitoring methods are designed for the characteristics of the image and are not suitable for rotating machinery

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  • Helicopter transmission system bearing detection method driven by fault sensitive coding network
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  • Helicopter transmission system bearing detection method driven by fault sensitive coding network

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Embodiment Construction

[0031] The following will refer to the attached Figure 1 to Figure 3 Specific examples of the present invention are described in more detail. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0032] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout ...

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Abstract

The invention discloses a helicopter transmission system bearing detection method driven by a fault sensitive coding network, and the method comprises the steps of collecting a healthy helicopter transmission system bearing noise signal as a training signal, carrying out the dimensionality reduction of the training signal through an encoder, obtaining a low-dimensional manifold, reconstructing a signal through a decoder based on the low-dimensional manifold, wherein the generative adversarial network comprises a generator and a discriminator, the generator generates a to-be-detected signal, and the discriminator discriminates whether the to-be-detected signal is from a training signal or a reconstruction signal; calculating a difference value between the training signal and the reconstruction signal to obtain a reconstruction error, and enabling the generative adversarial network to carry out adversarial training alternative optimization to achieve Nash equilibrium; obtaining the distribution of the health state signals through fitting; inputting a test signal to an encoder to reduce dimensions to obtain a low-dimensional manifold; enabling the decoder to reconstruct the signal based on the low-dimensional manifold; inputting a generative adversarial network for adversarial training and fitting to obtain test signal distribution; and if the distribution of the test signals does not conform to the distribution of the health state signals, determining that a fault exists.

Description

technical field [0001] The invention belongs to the technical field of bearing detection of a helicopter transmission system, in particular to a detection method for a bearing of a helicopter transmission system driven by a fault-sensitive coding network. Background technique [0002] As a rotary-wing aircraft, helicopters have the characteristics of vertical take-off and landing, flexible flight direction change, and hovering in the air. They have been widely used in military fields such as ground attack, air landing, logistics support, and battlefield rescue, as well as medical rescue, disaster relief and fire fighting. , short-distance transportation, hoisting equipment and other civil fields. However, compared with fixed-wing aircraft, helicopter accidents are more frequent, and the proportion of serious accidents is large, which puts forward high requirements for the safety and reliability of helicopters. While pursuing the high performance of helicopters, military pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00G06K9/62G06N3/04G01M13/045
CPCG01M13/045G06N3/045G06F2218/04G06F2218/08G06F18/214
Inventor 孙闯武靖耀赵志斌王诗彬同超玮李明严如强陈雪峰
Owner XI AN JIAOTONG UNIV
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