arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2303.09497cs.LGcs.HCcs.NE
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基于Hilbert-Schmidt独立准则的门回归单元网络健康状态估计

Gate Recurrent Unit Network based on Hilbert-Schmidt Independence Criterion for State-of-Health Estimation

National Key Laboratory of Human-Machine Hybrid Augmented Intelligence(人机混合增强智能全国重点实验室)

Ziyue Huang, Lujuan Dang, Yuqing Xie, Wentao Ma, Badong Chen

摘要:

健康状态(SOH)评估是确保电池安全可靠运行的关键步骤。由于不同周期中数据分布和序列长度不同等问题,现有方法大多需要健康特征提取技术,这可能是耗时且劳动密集型的。GRU由于其结构简单、性能优越,可以很好地解决这一问题,受到广泛关注。然而,冗余信息仍然存在于网络中,影响SOH估计的准确性。为了解决这个问题,提出了一种新的GRU网络的基础上希尔伯特-施密特独立准则(GRU-HSIC)。首先,使用零掩蔽网络将每个周期以不同长度测量的所有电池数据转换为相同长度的序列,同时仍保留有关每个周期中原始数据大小的信息。其次,将从信息瓶颈(IB)理论发展而来的Hilbert-Schmidt独立准则(HSIC)瓶颈扩展到GRU,以压缩来自隐藏层的信息。为了评估所提出的方法,我们进行了实验的数据集从中心先进的生存周期工程(CALCE)的马里兰大学和美国宇航局艾姆斯预测卓越中心。实验结果表明,我们的模型实现了更高的准确性比其他递归模型。

英文摘要:

State-of-health (SOH) estimation is a key step in ensuring the safe and reliable operation of batteries. Due to issues such as varying data distribution and sequence length in different cycles, most existing methods require health feature extraction technique, which can be time-consuming and labor-intensive. GRU can well solve this problem due to the simple structure and superior performance, receiving widespread attentions. However, redundant information still exists within the network and impacts the accuracy of SOH estimation. To address this issue, a new GRU network based on Hilbert-Schmidt Independence Criterion (GRU-HSIC) is proposed. First, a zero masking network is used to transform all battery data measured with varying lengths every cycle into sequences of the same length, while still retaining information about the original data size in each cycle. Second, the Hilbert-Schmidt Independence Criterion (HSIC) bottleneck, which evolved from Information Bottleneck (IB) theory, is extended to GRU to compress the information from hidden layers. To evaluate the proposed method, we conducted experiments on datasets from the Center for Advanced Life Cycle Engineering (CALCE) of the University of Maryland and NASA Ames Prognostics Center of Excellence. Experimental results demonstrate that our model achieves higher accuracy than other recurrent models.

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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