论文标题
基于降解模式聚类的REED继电器的混合深度学习模型的剩余使用寿命估计
A Hybrid Deep Learning Model-based Remaining Useful Life Estimation for Reed Relay with Degradation Pattern Clustering
论文作者
论文摘要
REED继电器是功能测试的基本组成部分,与电子产品的成功质量检查密切相关。为了提供REED继电器的准确剩余使用寿命(RUL)估计,基于以下三个考虑因素提出了具有降解模式聚类的混合深度学习网络。首先,对于REED继电器,观察到多种降解行为,因此提供了基于动态的基于时间包装的$ k $ -Means聚类,以区分彼此的退化模式。其次,尽管适当的特征选择具有重要意义,但很少有研究可以指导选择。提出的方法建议进行操作规则,以实现简单的目的。第三,提出了用于剩余使用寿命估计的神经网络(RULNET),以解决卷积神经网络(CNN)在捕获顺序数据的时间信息时的弱点,该信息在卷积操作的高级特征表示后结合了时间相关能力。这样,lulnet的三种变体由健康指标,具有自组织地图的功能或具有曲线拟合的功能构建。最终,通过一个实用的REED继电器数据集将提出的混合模型与典型的基线模型(包括CNN和长短期内存网络(LSTM))进行了比较。两种降解情况的结果表明,所提出的方法优于索引均方根误差的CNN和LSTM。
Reed relay serves as the fundamental component of functional testing, which closely relates to the successful quality inspection of electronics. To provide accurate remaining useful life (RUL) estimation for reed relay, a hybrid deep learning network with degradation pattern clustering is proposed based on the following three considerations. First, multiple degradation behaviors are observed for reed relay, and hence a dynamic time wrapping-based $K$-means clustering is offered to distinguish degradation patterns from each other. Second, although proper selections of features are of great significance, few studies are available to guide the selection. The proposed method recommends operational rules for easy implementation purposes. Third, a neural network for remaining useful life estimation (RULNet) is proposed to address the weakness of the convolutional neural network (CNN) in capturing temporal information of sequential data, which incorporates temporal correlation ability after high-level feature representation of convolutional operation. In this way, three variants of RULNet are constructed with health indicators, features with self-organizing map, or features with curve fitting. Ultimately, the proposed hybrid model is compared with the typical baseline models, including CNN and long short-term memory network (LSTM), through a practical reed relay dataset with two distinct degradation manners. The results from both degradation cases demonstrate that the proposed method outperforms CNN and LSTM regarding the index root mean squared error.