arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2112.04572cs.LGcs.SYeess.SPeess.SY
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融合主题专家和深度卷积神经网络的基于状态的在线机器-零件交互分类

Merging Subject Matter Expertise and Deep Convolutional Neural Network for State-Based Online Machine-Part Interaction Classification

University of Michigan(密歇根大学)

Hao Wang, Yassine Qamsane, James Moyne, Kira Barton

摘要:

机器零件交互分类是信息物理系统(CPS)所需的关键能力,是智能制造(SM)的关键使能器。虽然以前的相关研究主要集中在时间序列分类,但变化点检测同样重要,因为它提供了机器行为变化的时间信息。在这项工作中,我们解决了点检测和时间序列分类与深度卷积神经网络(CNN)为基础的框架的机器部件的相互作用。该框架中的CNN利用两级编码器-分类器结构来实现CPS的高效特征表示和方便的部署定制。虽然是数据驱动的,但框架的设计和优化是由主题专家(SME)指导的。SME定义的有限状态机(FSM)被纳入框架,以防止间歇性的错误分类。在案例研究中,我们实现了框架,在铣床上进行机器零件交互分类,并使用测试数据集和部署模拟的性能进行评估。该实现在测试数据集上实现了0.946的平均F1分数,在部署模拟上实现了0.24秒的平均延迟。

英文摘要:

Machine-part interaction classification is a key capability required by Cyber-Physical Systems (CPS), a pivotal enabler of Smart Manufacturing (SM). While previous relevant studies on the subject have primarily focused on time series classification, change point detection is equally important because it provides temporal information on changes in behavior of the machine. In this work, we address point detection and time series classification for machine-part interactions with a deep Convolutional Neural Network (CNN) based framework. The CNN in this framework utilizes a two-stage encoder-classifier structure for efficient feature representation and convenient deployment customization for CPS. Though data-driven, the design and optimization of the framework are Subject Matter Expertise (SME) guided. An SME defined Finite State Machine (FSM) is incorporated into the framework to prohibit intermittent misclassifications. In the case study, we implement the framework to perform machine-part interaction classification on a milling machine, and the performance is evaluated using a testing dataset and deployment simulations. The implementation achieved an average F1-Score of 0.946 across classes on the testing dataset and an average delay of 0.24 seconds on the deployment simulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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