改进抗噪1D-CNN的旋转车轮动平衡状态监测*
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作者单位:

1.江苏大学汽车与交通工程学院;2.东风汽车集团有限公司前瞻技术研究院

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TH17

基金项目:

国家自然科学基金资助项目(52072156),中国博士后基金资助项目(2020M682269)


Dynamic balance state monitoring of rotating wheels based on improved noise resistant 1D-CNN
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Affiliation:

1.Jiangsu university;2.Forward Technical Research Institute, Dongfeng Motor Co. Ltd

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    摘要:

    旋转车轮的动平衡对汽车操控性和舒适性具有显著的影响。为了及时、准确的对轮胎动平衡状态进行检测,本文在传统1D-CNN模型上,建立了基于特征学习结构的注意力机制,提出一种改进抗噪1D-CNN(noise resistant 1D-CNN,简称NRCNN)的旋转车轮动平衡健康状态监测方法。以在实车上添加不同质量平衡块的方式来获得三种旋转车轮动不平衡状态,进而获得旋转车轮不同状态下的振动信息;以高斯白噪声作为噪声输入,对所测旋转车轮不同动平衡状态的振动信息进行处理来获得试验样本数据;综合运用卷积运算机制和特征变换进行t-SNE可视化显示。结果表明,与传统1D-CNN模型(无注意力机制)相比,在不同信噪比的工况下,本文提出的改进抗噪1D-CNN旋转车轮的动平衡状态监测方法均展现出了更好的诊断准确性,可高达到99.95%。

    Abstract:

    The dynamic balance of rotating wheels has a significant impact on vehicle handling and comfort. In order to detect the tire dynamic balance state timely and accurately, an attention mechanism based on feature learning structure is established on the traditional 1D-CNN model, and proposes an improved anti-noise 1D-CNN method for rotating wheel dynamic balance health state monitoring. Three kinds of dynamic unbalance states of rotating wheels are obtained by adding different mass balancing weights to the real vehicle, and then the vibration information of rotating wheels is obtained. Gaussian white noise is used as the noise input to process the vibration information of the measured rotating wheel in different dynamic equilibrium states to obtain the test sample data. The convolution operation mechanism and feature transformation are comprehensively used for t-SNE visual display. The results show that compared with the traditional 1D-CNN model (No attention mechanism), under the conditions of different signal-to-noise ratio, the improved dynamic balance state monitoring method of noise resistant 1D-CNN rotating wheel proposed in this paper shows better diagnostic accuracy, which can be as high as 99.95%.

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历史
  • 收稿日期:2022-08-04
  • 最后修改日期:2022-10-18
  • 录用日期:2022-11-07
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