用热成像+自组织神经网络,低成本诊断电机故障
Thermal Image-based Fault Diagnosis in Induction Machines via Self-Organized Operational Neural Networks

- 用自组织神经网络分析电机热图像,自动提取故障特征
- 仅3层结构就达到与复杂CNN相当的诊断准确率
- 模型轻量适合边缘设备,可部署于多设备监控系统
异步电机的状态监测对防止停机和设备损坏至关重要。机械故障如轴不对中和转子断裂是工业环境中最常见的问题。为有效监测和检测这些故障,现场常使用加速度计、电流传感器、温度传感器和麦克风等多种传感器。作为非接触式替代方案,热成像通过热相机捕捉机器的温度变化,提供强有力的监测手段。本研究提出采用二维自组织操作神经网络(Self-ONNs)从鼠笼式异步电机的热图像中诊断轴不对中和转子断裂故障。我们使用Workswell红外相机,将该方法与多种主流卷积神经网络(包括ResNet、EfficientNet、PP-LCNet、SEMNASNet和MixNet)进行对比评估。结果表明,具有非线性神经元和自组织能力的Self-ONNs,在仅三层次的浅层架构下,实现了与更复杂的CNN模型相当的诊断性能。其精简的架构确保了高性能,非常适合在边缘设备上部署,也适用于更复杂的多功能或多设备监控系统。
原文摘要 · Abstract (English)
Condition monitoring of induction machines is crucial to prevent costly interruptions and equipment failure. Mechanical faults such as misalignment and rotor issues are among the most common problems encountered in industrial environments. To effectively monitor and detect these faults, a variety of sensors, including accelerometers, current sensors, temperature sensors, and microphones, are employed in the field. As a non-contact alternative, thermal imaging offers a powerful monitoring solution by capturing temperature variations in machines with thermal cameras. In this study, we propose using 2-dimensional Self-Organized Operational Neural Networks (Self-ONNs) to diagnose misalignment and broken rotor faults from thermal images of squirrel-cage induction motors. We evaluate our approach by benchmarking its performance against widely used Convolutional Neural Networks (CNNs), including ResNet, EfficientNet, PP-LCNet, SEMNASNet, and MixNet, using a Workswell InfraRed Camera (WIC). Our results demonstrate that Self-ONNs, with their non-linear neurons and self-organizing capability, achieve diagnostic performance comparable to more complex CNN models while utilizing a shallower architecture with just three operational layers. Its streamlined architecture ensures high performance and is well-suited for deployment on edge devices, enabling its use also in more complex multi-function and/or multi-device monitoring systems.
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