针对跨域设备寿命预测,提出新方法提升精度与稳定性。
Target-specific Adaptation and Consistent Degradation Alignment for Cross-Domain Remaining Useful Life Prediction
- 在对抗学习中重构目标域数据,保留关键特征
- 通过聚类配对实现退化阶段的一致对齐
- 适合工业设备健康监测场景,性能超越现有方法
准确预测机械装备剩余使用寿命(RUL)可显著降低维护成本、提升设备可用性并减少不良后果。数据驱动的RUL预测方法表现良好,但其有效性通常依赖于训练与测试数据来自同一分布的假设,在真实工业场景中难以满足。现有对抗域适应方法虽致力于提取域不变特征,却忽略了目标域特异性信息及退化阶段的不一致性,导致性能受限。为此,本文提出一种名为TACDA的新域适应方法,用于跨域RUL预测。具体而言,在对抗适应过程中引入目标域重建策略,既保留目标域特异性信息,又学习域不变特征;同时设计新颖的聚类与配对机制,实现相似退化阶段的一致对齐。大量实验表明,TACDA在两项不同评估指标上均优于现有最先进方法。代码已开源:https://github.com/keyplay/TACDA。
原文摘要 · Abstract (English)
Accurate prediction of the Remaining Useful Life (RUL) in machinery can significantly diminish maintenance costs, enhance equipment up-time, and mitigate adverse outcomes. Data-driven RUL prediction techniques have demonstrated commendable performance. However, their efficacy often relies on the assumption that training and testing data are drawn from the same distribution or domain, which does not hold in real industrial settings. To mitigate this domain discrepancy issue, prior adversarial domain adaptation methods focused on deriving domain-invariant features. Nevertheless, they overlook target-specific information and inconsistency characteristics pertinent to the degradation stages, resulting in suboptimal performance. To tackle these issues, we propose a novel domain adaptation approach for cross-domain RUL prediction named TACDA. Specifically, we propose a target domain reconstruction strategy within the adversarial adaptation process, thereby retaining target-specific information while learning domain-invariant features. Furthermore, we develop a novel clustering and pairing strategy for consistent alignment between similar degradation stages. Through extensive experiments, our results demonstrate the remarkable performance of our proposed TACDA method, surpassing state-of-the-art approaches with regard to two different evaluation metrics. Our code is available at https://github.com/keyplay/TACDA.
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