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Stepping screw motor defect diagnosis device based on audio analysis and defect recognition method

A technology of audio analysis and defect diagnosis, which is applied to measuring devices, character and pattern recognition, vibration measurement in solids, etc., can solve the problems of comprehensive performance testing and slow testing speed of stepping screw motors, and shorten the testing time. The effect of improving detection efficiency

Active Publication Date: 2020-04-03
SICHUAN AWA SEIMITSU ELECTRIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of the problems existing in the current non-destructive testing technology of stepping screw motors that the detection speed is slow and the performance of all aspects of the stepping screw motor cannot be fully tested at the same time, the purpose of the present invention is to provide a stepping screw motor based on audio analysis. Rod motor defect diagnosis device and defect identification method can simultaneously realize high-speed detection of defects such as noise, excessive sound, and abnormal sound caused by faults such as gear set wear, screw wear, shell deformation, and insufficient lubricating oil. Non-destructive testing

Method used

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  • Stepping screw motor defect diagnosis device based on audio analysis and defect recognition method
  • Stepping screw motor defect diagnosis device based on audio analysis and defect recognition method
  • Stepping screw motor defect diagnosis device based on audio analysis and defect recognition method

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Embodiment 1

[0079] Embodiment 1 Defect diagnosis device for stepping screw motor based on audio analysis

[0080] The stepping screw motor defect diagnosis device based on audio analysis provided by this embodiment, such as Figure 1-5 As shown, it includes a test fixture 12 for installing the stepping screw motor 15 to be tested, a drive board 13 for driving the stepping screw motor 15 to run, and an audio collection mechanism 11 located beside the stepping screw motor 15 , a load pulling mechanism for assisting the operation of the stepping screw motor 15 and load testing, a soundproof box 23 for isolating external noise, and a computer 22 for analyzing audio signals. The soundproof box 23 and the computer 22 are all installed on the anti-vibration workbench 21, and the computer 22 is positioned at the outside of the soundproof box 23.

[0081] Such as Figure 1-2 As shown, the test fixture 12 includes a stage, and a pressing mechanism for pressing and fixing the stepping screw motor ...

Embodiment 2

[0088] Embodiment 2 Defect identification of stepping screw motor based on audio analysis

[0089] In this embodiment, the defects of the stepping screw motor are classified in combination with the decibel value and the noise. The setting standard for the defect of the stepping screw motor 15 is: the decibel value exceeds the threshold and the accompanying noise is a noise part; the decibel value If the decibel value does not exceed the threshold and is accompanied by noise, it is a piece of abnormal sound; if the decibel value does not exceed the threshold and there is no noise, it is a good product.

[0090] In this embodiment, the decibel threshold and the noise judgment standard are firstly determined through an orthogonal experiment.

[0091] 1. Orthogonal test

[0092] Select a number of step screw motor 15 standard workpieces (including normal workpieces without defects) with various types of defects (noise, excessive sound, abnormal sound and good product (ie no defec...

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Abstract

The invention discloses a stepping screw motor defect diagnosis device based on audio analysis and a defect recognition method. The diagnosis device comprises a test fixture used for installing a stepping screw motor to be tested, a driving plate used for driving the stepping screw motor to operate, an audio collection mechanism located beside the stepping screw motor, a computer and a sound insulation box. The defect recognition method comprises the following steps: processing a received audio signal based on a computer to obtain a one-third frequency multiplication decibel spectrum and a Melspectrum, and identifying whether the stepping screw motor has a defect or not and identifying the defect type according to a set standard. According to the stepping screw motor defect diagnosis device based on audio analysis and the defect recognition method provided by the invention, high-speed nondestructive detection of defects (noise, overlarge sound, abnormal sound and the like) in variousaspects of the stepping screw motor can be realized at the same time, the detection precision is high, and the efficiency is high.

Description

technical field [0001] The invention belongs to the technical field of motor detection, and relates to a defect diagnosis device and a defect identification method of a stepping screw motor based on audio analysis. Background technique [0002] As a device that converts rotation into linear motion, the stepping screw motor has the advantages of precise positioning, controllable speed, and high precision. Its application scope is mainly in the fields of precision calibration and precise position movement. Smartphone lift cameras mostly use it as a power source. As far as the stepping screw motor is concerned, there are many noise defects when the product leaves the factory, which seriously affects the stability, service life and user experience of the motor. In order to improve this situation, it is of great significance to improve the production efficiency of the enterprise and the working characteristics of the motor itself for the fault detection of the stepping screw mot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34G01H1/00G01H1/14G01H17/00G06K9/62
CPCG01R31/343G01H1/003G01H1/14G01H17/00G06F18/2135G06F18/24
Inventor 方夏方涵李勇朱群馨邹子丹
Owner SICHUAN AWA SEIMITSU ELECTRIC CO LTD
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