Noise source positioning method and system

A positioning method and positioning system technology, applied in the direction of measuring ultrasonic/sonic/infrasonic waves, measuring devices, instruments, etc., can solve the problems of large errors, external noise interference, low position resolution and unsuitable micro devices, etc., and achieve positioning accuracy High, high position resolution, to meet the effect of noise source positioning requirements
CN112097893APending Publication Date: 2020-12-18CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST THE FIFTH ELECTRONICS RES INST OF MIITCEPREI LAB
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA ELECTRONICS PROD RELIABILITY & ENVIRONMENTAL TESTING RES INST THE FIFTH ELECTRONICS RES INST OF MIITCEPREI LAB
Publication Date
2020-12-18

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Abstract

The invention provides a noise source positioning method and system. The noise source positioning method is used for positioning an action part generating abnormal noise in a micro device, and comprises the following steps: acquiring a motion characteristic frequency of a preset action part of the micro device; obtaining a first vibration spectrum of the preset action part when the micro device has abnormal noise and a second vibration spectrum of the preset action part when the micro device has no abnormal noise; determining a noise characteristic frequency of the micro device according to the first vibration spectrum and the second vibration spectrum; and determining the motion component which generates abnormal noise in the micro device according to the motion characteristic frequency of the preset motion component and the noise characteristic frequency. According to the noise source positioning method, the noise source can be positioned more accurately, the positioning precision and the position resolution are improved, and parts generating lightweight noise in the micro device can be effectively positioned.
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Description

technical field

[0001] The invention relates to the technical field of noise detection, in particular to a noise source location method and system. Background technique

[0002] Noise is a common problem in machinery and electromechanical products. The generation of noise not only affects the comfort of personnel, but also endangers people's physical and mental health. At the same time, noise has a strong correlation with product reliability. For products, the occurrence of noise problems often means that the product has reliability problems in terms of mechanical structure, which is usually caused by poor structural design, and long-term use of poor structural design may cause failure modes such as wear and tear of mechanical products. Therefore, the identification and location of noise sources is the key to noise control. To solve the problem of structural noise, it is first necessary to accurately locate the source of the noise, analyze the mechanism of noise generation...

Claims

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