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Application method of wavelet singular entropy in periodic fault detection of stacker

A technology of fault detection and application method, which is applied in the direction of testing of machines/structural components, measuring devices, instruments, etc., which can solve problems such as being easily covered by noise, undetectable, and small fault amplitude of periodic faults, so as to achieve low fault identification efficiency effect

Pending Publication Date: 2019-10-18
ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER +3
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Problems solved by technology

Periodic faults in common stacker faults cannot be detected due to small fault amplitudes and are easily covered by noise

Method used

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  • Application method of wavelet singular entropy in periodic fault detection of stacker
  • Application method of wavelet singular entropy in periodic fault detection of stacker
  • Application method of wavelet singular entropy in periodic fault detection of stacker

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Embodiment Construction

[0027] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0028] refer to Figure 1-Figure 2 , the specific implementation method adopts the following technical solutions: a method for applying wavelet singular entropy in the periodic fault detection of stacker cranes, including the determination of wavelet function and decomposition scale, the determination of singular value decomposition of wavelet coefficient matrix, and the singular entropy of wavelet coefficient ok.

[0029] (1) The wavelet function and the determination of the decomposition scale are introduced as follows:

[0030] Wavelet transform mainly uses a cluster of functions to represent or approximate signals. It is mainly composed of some basic translation transformations. The choice of wavelet base is mainly due to the compact suppor...

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Abstract

The invention discloses an application method of a wavelet singular entropy in periodic fault detection of a stacker. Wavelet transform is performed on a signal from a stacker to obtain wavelet coefficients at different wavelet scales corresponding to different wavelet frequency bands, and the wavelet coefficients form a wavelet coefficient matrix; singular value decomposition is performed to obtain a series of singular values capable of reflecting basic features of an original coefficient matrix, so that distribution of all components is realized and the distribution of all components is obtained; and then on the basis of statistical properties of an information entropy, uncertainty analysis is performed on a singular value set to provide a certain measure for the original signal and themeasure is used as a fault signal feature. With the disclosed method, the signal characteristics of periodic faults can be extracted from the original signal quickly; and the fault feature extracted based on the wavelet singular entropy is independent of the fault amplitude.

Description

technical field [0001] The invention relates to a detection method for periodic faults of a stacker, in particular to an application method of wavelet singular entropy in the detection of periodic faults of a stacker. Background technique [0002] With the rapid development of automated warehouses, stacker cranes, as one of the core equipment of automated warehouses, are the links and bridges for storage and transportation of automated warehouses. The focus of the research. When the stacker fails, it not only affects its own operation, but also affects the normal operation of the entire automated warehouse. At the same time, its work efficiency also directly affects the efficiency of the entire warehouse. However, the structure of stacker components is becoming more and more compact and integrated, and the intelligent level of the logic function of the system is constantly improving; and it is affected by factors such as working environment, improper human operation, and hi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00
CPCG01M99/005
Inventor 马亚彬疏奇奇张宏生王健刘洪亮
Owner ELECTRIC POWER RES INST OF STATE GRID ANHUI ELECTRIC POWER
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