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arXiv 1608.06154cs.LGcs.AI
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基于LSTM编解码器的无监督健康指数多传感器故障预测

Multi-Sensor Prognostics using an Unsupervised Health Index based on LSTM Encoder-Decoder

TCS Research(塔塔咨询服务公司研究院)

Pankaj Malhotra, Vishnu TV, Anusha Ramakrishnan, Gaurangi Anand, Lovekesh Vig, Puneet Agarwal, Gautam Shroff

摘要:

使用机器的操作传感器数据来估计机器的剩余使用寿命(RUL)的许多方法对系统如何降级或故障如何演变做出假设,例如,指数退化然而,在许多领域中,退化可能并不遵循一种模式。我们提出了一个基于长短期记忆的编码器-解码器(LSTM-ED)计划,以获得一个无监督的健康指数(HI)的系统使用多传感器的时间序列数据。LSTM-ED被训练来重构与系统的健康状态相对应的时间序列。重建误差用于计算HI,HI然后用于RUL估计。我们在公开的涡扇发动机和铣床数据集上评估了我们的方法。我们还提出了一个现实世界的工业数据集从粉碎机磨,我们发现基于LSTM-ED的HI和维护成本之间的显着相关性的结果。

英文摘要:

Many approaches for estimation of Remaining Useful Life (RUL) of a machine, using its operational sensor data, make assumptions about how a system degrades or a fault evolves, e.g., exponential degradation. However, in many domains degradation may not follow a pattern. We propose a Long Short Term Memory based Encoder-Decoder (LSTM-ED) scheme to obtain an unsupervised health index (HI) for a system using multi-sensor time-series data. LSTM-ED is trained to reconstruct the time-series corresponding to healthy state of a system. The reconstruction error is used to compute HI which is then used for RUL estimation. We evaluate our approach on publicly available Turbofan Engine and Milling Machine datasets. We also present results on a real-world industry dataset from a pulverizer mill where we find significant correlation between LSTM-ED based HI and maintenance costs.

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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