• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2026, Vol. 62 ›› Issue (10): 348-361.doi: 10.3901/JME.260503

• 交叉与前沿 • 上一篇    

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基于动态多尺度注意力机制的数控机床伺服刀架动力头退化状态轻量级识别方法

许伟洋1,2, 杨兆军1,2, 刘志峰1,2, 何佳龙1,2, 李国发1,2, 陈传海1,2, 刘严1,2   

  1. 1. 吉林大学数控装备可靠性教育部重点实验室 长春 130022;
    2. 吉林大学机械与航空航天工程学院 长春 130022
  • 收稿日期:2025-05-13 修回日期:2025-12-03 发布日期:2026-07-29
  • 作者简介:许伟洋,男,1997年出生,博士研究生。主要研究方向为数控机床关键功能部件的智能运维。E-mail:xuwy23@mails.jlu.edu.cn;杨兆军,男,1956年出生,博士,教授,博士研究生导师。主要研究方向为数控机床可靠性理论与技术、数控机床可靠性加速试验技术与装备等。E-mail:yzj@jlu.edu.cn;刘志峰,男,1973年出生,博士,教授,博士研究生导师。主要研究方向为数控机床可靠性理论与技术、高性能装配理论与技术、智能制造技术。E-mail:lzfjlu@jlu.edu.cn;何佳龙(通信作者),男,1989年出生,博士,教授,博士研究生导师。主要研究方向为数控机床可靠性理论与技术、剩余寿命预测与维护等。E-mail:hejl@jlu.edu.cn;李国发,男,1970年出生,博士,教授,博士研究生导师。主要研究方向为数控机床可靠性理论与技术、结构可靠性分析与优化设计等。E-mail:ligf@jlu.edu.cn;陈传海,男,1983年出生,博士,教授,博士研究生导师。主要研究方向为数控机床可靠性理论与技术等。E-mail:cchchina@foxmail.com;刘严,男,1996年出生,博士,博士后。主要研究方向为数控机床可靠性理论与技术、剩余寿命预测等。E-mail:liuy_jlu@jlu.edn.cn
  • 基金资助:
    国家自然科学基金(U24B2063、52375497)和吉林省教育厅科学研究(JJKH20250085BS)资助项目。

Lightweight Recognition of Degradation States for the Servo Turret Power Head Based on Dynamic Multi-scale Attention Mechanism

XU Weiyang1,2, YANG Zhaojun1,2, LIU Zhifeng1,2, HE Jialong1,2, LI Guofa1,2, CHEN Chuanhai1,2, LIU Yan1,2   

  1. 1. Key Laboratory of CNC Equipment Reliability of Ministry of Education, Jilin University, Changchun 130022;
    2. School of Mechanical and Aerospace Engineering, Jilin University, Changchun 130022
  • Received:2025-05-13 Revised:2025-12-03 Published:2026-07-29

摘要: 针对深度学习模型在数控制造装备退化状态识别时受模型计算量大等的限制,难以满足工业现场边缘计算设备轻量化部署的需求,提出一种基于动态多尺度注意力机制与模型轻量化的伺服刀架动力头退化状态识别方法。首先针对现有模型因特征提取能力有限导致鲁棒性和准确性不足等问题,构建具有不同卷积核大小的卷积层,增强多尺度信息的捕捉能力;通过多层次特征融合,将注意力机制、动态卷积与全连接层输出融合,综合利用各层特征提升模型鲁棒性和准确性;其次,为有效实现模型轻量化,提出最小差异化辅助训练策略,在显著降低模型参数规模的同时保证状态识别的准确率。使用伺服刀架动力头可靠性试验系统数据对所提方法进行了6组试验验证。试验结果表明,所提退化状态识别方法在轻量化前平均准确率可达99.66%,模型参数量减少95.44%(从520 000降至20 000左右)后,准确率仍可保持在94.09%。为实现数控制造装备核心部件退化状态识别方法的轻量化,提供了参考。

关键词: 退化状态识别, 动态多尺度卷积, 注意力机制, 模型轻量化, 伺服刀架动力头

Abstract: Addressing the limitations of deep learning models in recognizing degradation states of CNC manufacturing equipment, such as high computational requirements, which hinder their deployment on lightweight edge computing devices in industrial settings, this paper proposes a method for degradation state recognition of servo turret power heads based on a dynamic multi-scale attention mechanism and model lightweighting. To address the limited feature extraction ability of existing models, we use convolutional layers with different kernel sizes to capture multi-scale information. Multi-level feature fusion, combining attention mechanisms, dynamic convolutions, and fully connected layers, enhances the model’s robustness and accuracy. To achieve lightweighting, a minimum differentiation-assisted training strategy is introduced, significantly reducing parameter size while maintaining predictive performance. Six sets of experiments were conducted to verify the proposed method using data from the reliability testing system of the servo turret power head. Experimental results show that the proposed method achieves an average accuracy of 99.66% before lightweighting, and can still maintain an accuracy rate of 94.09% after reducing the parameter size by 95.44% (from about 520 000 to about 20 000 parameters). This provides a reference for lightweight monitoring of the degradation status in CNC machine tools.

Key words: degradation state recognition, dynamic multi-scale convolution, attention mechanism, lightweight, servo turret power head

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