Gear early fault diagnosis method based on shock response and modulation mode synergy

By extracting the impact response and modulation mode features of early gear faults using a hybrid damped wavelet convolution kernel and a Gaussian filter kernel, and then synergistically fusing them, the problem of insufficient synergistic utilization of impact response and modulation mode in existing models is solved, thereby improving the accuracy and interpretability of early gear fault diagnosis.

CN122409182APending Publication Date: 2026-07-17INNER MONGOLIA NORMAL UNIVERSITY
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Patent Information

Application Number
CN202610827067.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-09
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing deep learning models lack the synergistic utilization of impact response and modulation mode in early gear fault diagnosis, resulting in insufficient diagnostic accuracy and interpretability.

Method used

A method for diagnosing early gear faults is constructed by extracting the impact response features of early gear faults using a hybrid damped wavelet convolution kernel, extracting frequency domain modulation mode features using a Gaussian filter kernel, and then performing feature enhancement and adaptive weighted fusion through a collaborative fusion module.

Benefits of technology

It improves the accuracy, stability, and interpretability of early gear fault diagnosis, better characterizes early gear fault features, and enhances the model's ability to extract weak impact responses and frequency domain modulation modes.

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Abstract

本发明公开了一种冲击响应与调制模态协同融合的齿轮早期故障诊断方法,属于旋转机械状态监测与智能故障诊断技术领域,包括以下步骤:获取齿轮振动信号传感器采集的原始一维振动信号数据并进行数据预处理,得到一维时间序列输入样本;设计并利用冲击响应感知模块对一维时间序列输入样本进行处理,通过构建混合阻尼小波卷积核提取齿轮早期故障诱发的冲击响应特征;设计并利用调制模态提取模块对一维时间序列输入样本进行频域处理,通过高斯滤波核提取齿轮故障调制模态特征并对调制模态特征进行抗混叠处理;设计并利用冲击响应与调制模态协同融合模块,对冲击响应特征和调制模态特征进行特征增强和自适应加权融合得到融合故障特征;构建分类层,通过融合故障特征输出齿轮早期故障诊断结果,本发明能够同时感知冲击响应、提取调制模态并进行协同融合,提高了齿轮早期故障诊断的准确性、稳定性和可解释性。
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