中国机械工程 ›› 2026, Vol. 37 ›› Issue (7): 1641-1650.DOI: 10.3969/j.issn.1004-132X.2026.07.013
• 机械基础工程 • 上一篇
吴炎青1(
), 胡腾1(
), 王小虎1, 米良2, 殷国富3
收稿日期:2024-10-12
修回日期:2026-04-21
出版日期:2026-07-25
发布日期:2026-08-18
通讯作者:
胡腾
作者简介:吴炎青,男,1999年生,硕士研究生。研究方向为机械系统稳定性预报。E-mail:15351249852@163.com基金资助:
WU Yanqing1(
), HU Teng1(
), WANG Xiaohu1, MI Liang2, YIN Guofu3
Received:2024-10-12
Revised:2026-04-21
Online:2026-07-25
Published:2026-08-18
Contact:
HU Teng
摘要:
针对现有变工况铣削振动状态辨识技术在精准性与高效性的局限性,提出一种基于混合熵的无监督辨识方法。以基于偏差补偿子带自适应滤波的铣削力信号降噪为切入点,通过对信号模糊熵与功率谱熵的加权求和获取铣削振动状态混合熵;借助协同聚类模型对混合熵进行无监督学习及分类,进而依据信号采样时间历程,输出变工况铣削振动状态的辨识结果。实验表明,所提方法训练模型仅需16.55 s,且无需样本,优势显著。
中图分类号:
吴炎青, 胡腾, 王小虎, 米良, 殷国富. 基于混合熵的变工况铣削振动状态无监督辨识方法[J]. 中国机械工程, 2026, 37(7): 1641-1650.
WU Yanqing, HU Teng, WANG Xiaohu, MI Liang, YIN Guofu. Unsupervised Identification Methodology Using Hybrid Entropy for Milling Vibration States under Variable Operating Conditions[J]. China Mechanical Engineering, 2026, 37(7): 1641-1650.
| w1 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 |
|---|---|---|---|---|---|---|
| w2 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 |
表1 权重参数设置
Tab.1 Weight Parameter Setting
| w1 | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 |
|---|---|---|---|---|---|---|
| w2 | 0.9 | 0.8 | 0.7 | 0.6 | 0.5 | 0.4 |
| 铣削状态 | |||
|---|---|---|---|
| 稳定铣削 | 颤振孕育 | 颤振爆发 | |
| 时间范围(s) | 10.0-29.5 | 29.5-30.4 | 30.4-32.0 |
表2 铣削振动状态划分
Tab.2 Milling vibration state classifications
| 铣削状态 | |||
|---|---|---|---|
| 稳定铣削 | 颤振孕育 | 颤振爆发 | |
| 时间范围(s) | 10.0-29.5 | 29.5-30.4 | 30.4-32.0 |
| 网络模型 | AlexNet | SVM | MobileNetV2 |
|---|---|---|---|
| 学习率 | 0.01 | 0.01 | 0.01 |
| Epoch/次 | 20 | 20 | 20 |
| batch size/张 | 32 | 32 | 32 |
| 优化器 | ADAM | SMO | ADAM |
| 损失函数 | 交叉熵 | Soft Margin Loss | 交叉熵 |
表3 有监督模型超参数设置
Tab.3 Supervised model hyperparameters
| 网络模型 | AlexNet | SVM | MobileNetV2 |
|---|---|---|---|
| 学习率 | 0.01 | 0.01 | 0.01 |
| Epoch/次 | 20 | 20 | 20 |
| batch size/张 | 32 | 32 | 32 |
| 优化器 | ADAM | SMO | ADAM |
| 损失函数 | 交叉熵 | Soft Margin Loss | 交叉熵 |
| 配置名称 | 配置参数 |
|---|---|
| CPU | Intel Xeon E5-2678 v3 |
| GPU | NVIDIA GeForce 2080Ti 11GB |
| 计算环境 | Win11+Python3.9+MatlabR2022b |
表4 计算机软硬件
Tab.4 Hardware and software configuration
| 配置名称 | 配置参数 |
|---|---|
| CPU | Intel Xeon E5-2678 v3 |
| GPU | NVIDIA GeForce 2080Ti 11GB |
| 计算环境 | Win11+Python3.9+MatlabR2022b |
| 辨识模型 | 训练 时间/s | 测试 时间/s | 精确率/% | 准确率/% |
|---|---|---|---|---|
| AlexNet | 146.35 | 4.28 | 70.71 | 84.09 |
| SVM | 28.27 | 0.18 | 98.64 | 99.13 |
| MobileNetV2 | 230.88 | 1.20 | 97.73 | 98.52 |
| K-means-GMM | 16.55 | - | - | - |
表5 模型性能对比
Tab.5 Comparison of model abilities
| 辨识模型 | 训练 时间/s | 测试 时间/s | 精确率/% | 准确率/% |
|---|---|---|---|---|
| AlexNet | 146.35 | 4.28 | 70.71 | 84.09 |
| SVM | 28.27 | 0.18 | 98.64 | 99.13 |
| MobileNetV2 | 230.88 | 1.20 | 97.73 | 98.52 |
| K-means-GMM | 16.55 | - | - | - |
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