RV reducer fault diagnosis method, device and system

A diagnostic method and fault diagnosis technology, applied in the field of mechanical equipment, can solve the problem of RV reducer not suitable for RV reducer fault diagnosis and other problems

Pending Publication Date: 2021-02-02
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0008] The purpose of the present invention is to at least solve the problem that the existing RV reducer fault diagnosis method is not suitable for RV reducer fault diagnosis

Method used

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  • RV reducer fault diagnosis method, device and system
  • RV reducer fault diagnosis method, device and system

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Embodiment Construction

[0048] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0049] It should be understood that terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated fea...

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Abstract

The invention belongs to the technical field of mechanical equipment, and particularly relates to an RV reducer fault diagnosis method, device and system. The RV speed reducer fault diagnosis method comprises the following steps: according to the fact that an RV speed reducer is in a harmonic excitation state, obtaining an input signal of the RV speed reducer and an output signal of the RV speed reducer; calculating the NOFRF frequency spectrum of the RV speed reducer according to the input signal of the RV speed reducer and the output signal of the RV speed reducer; sampling according to theNOFRF frequency spectrum of the RV reducer to obtain a high-dimensional data set, extracting features of the high-dimensional data set, and completing data compression; and sending the compressed datainto a support vector machine for training so as to establish a classifier of the RV speed reducer and carry out fault diagnosis on the RV speed reducer. According to the method, the NOFRF frequencyspectrum of the RV speed reducer is calculated, the characteristics of a high-dimensional data set are extracted, data compression is completed, the compressed data is sent to a support vector machineto be trained, fault diagnosis is conducted on the RV speed reducer, and recognition of different fault modes of the RV speed reducer is achieved.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, and in particular relates to a fault diagnosis method, device and system of an RV reducer. Background technique [0002] As an effective means to realize automated production, improve social production efficiency, and promote the development of enterprise and social productivity, industrial robots are widely used in automotive, aerospace, electronics, food, new energy and other fields. As an important part of industrial robots, the reliability of the RV (English name: Rotate Vector, Chinese name: Rotation Vector) reducer has a great impact on the performance of industrial robots. Once it fails, it will cause the entire robot to be paralyzed. Seriously affect the efficiency of the production line, delay production tasks, and bring economic losses to the enterprise. It is of great significance to explore the fault diagnosis method of RV reducer and realize the early identification of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/028
CPCG01M13/028
Inventor 彭翀王贺东江文明左文光陈苗蔡昱珍
Owner BEIHANG UNIV
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