STTR Phase I: Probabilistic and Explainable Deep Learning for the Intuitive Predictive Maintenance of Industrial and Agricultural Equipment

STTR 第一阶段：用于工业和农业设备直观预测维护的概率和可解释深度学习

• 批准号: 2036044
• 负责人: Andrew Zimmerman
• 金额: $ 25.6万
• 依托单位: PERCEV LLC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2020
• 资助国家: 美国
• 起止时间: 2020-12-15 至 2022-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=2036044&HistoricalAwards=false
• 关键词: STTR; Phase; Probabilistic; Explainable; Deep

The broader impact/commercial potential of this Small Business Technology Transfer (STTR) Phase I project proposes a deep learning approach to predictive maintenance of industrial and agricultural equipment. High productivity demands and just-in-time approaches to manufacturing mean that equipment downtime can be extremely expensive; Research shows that the average manufacturer deals with 800 hours of downtime per year. Further, an increasing quantity of aging equipment and a maintenance workforce that is largely reaching retirement age have led to a situation where maintenance staff often lack the knowledge, training, and/or manpower to address a growing pool of aging assets. This project intends to bring forward a novel suite of intuitive and explainable technologies that can help reduce or eliminate unexpected downtime and help digitally capture and transfer expert knowledge from the retiring workforce.This Small Business Technology Transfer (STTR) Phase I project proposes a novel, deep learning approach to machinery prognostics. Many existing deep learning approaches focus on the most likely failure scenarios given a set of training data. However, monitored equipment may not exbibit behavior covered in that training set, leading to low-confidence predictions. This approach will not only predict the remaining useful life of a machine component, but it will also quantify the uncertainty of a prediction through an ensemble of models and a temporal fusion of predictions. As a result, maintenance decisions can be made from a risk-based perspective, eliminating unnecessary maintenance stemming from low-confidence predictions. Furthermore, many existing deep learning approaches lack the ability to intuitively explain their predictions to human users. In critical applications where bad predictions have serious consequences, maintenance personnel must understand and trust an artificially intelligent predictive maintenance partner. The proposed solution produces an intuitive visual explanation for the model’s prediction by highlighting and animating the segments of a raw data signal that are contributing most significantly to the prediction. This will allow trained personnel to quickly make optimal maintenance decisions by fusing data-driven insights with their existing domain expertise.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.

这个小企业技术转让（STTR）第一阶段项目的更广泛的影响/商业潜力提出了一种深度学习方法来预测工业和农业设备的维护。高生产率要求和即时生产方法意味着设备停机时间可能非常昂贵;研究表明，制造商平均每年要处理800小时的停机时间。此外，越来越多的老化设备和大部分达到退休年龄的维护劳动力已经导致维护人员经常缺乏知识、培训和/或人力来解决日益增长的老化资产池的情况。该项目旨在提出一套直观和可解释的新技术，可以帮助减少或消除意外停机时间，并帮助数字化地捕获和转移退休员工的专业知识。这个小型企业技术转移（STTR）第一阶段项目提出了一种新颖的深度学习方法来进行机械故障诊断。许多现有的深度学习方法专注于给定一组训练数据的最可能的失败场景。然而，受监控的设备可能不会显示该训练集中涵盖的行为，导致低置信度预测。这种方法不仅可以预测机器部件的剩余使用寿命，而且还可以通过模型集合和预测的时间融合来量化预测的不确定性。因此，可以从基于风险的角度做出维护决策，从而消除因低置信度预测而产生的不必要的维护。此外，许多现有的深度学习方法缺乏向人类用户直观解释其预测的能力。在错误预测会产生严重后果的关键应用中，维护人员必须理解并信任人工智能预测性维护合作伙伴。所提出的解决方案通过突出显示和动画显示对预测贡献最大的原始数据信号的片段来为模型的预测产生直观的视觉解释。 该奖项反映了NSF的法定使命，通过使用基金会的知识价值和更广泛的影响审查标准进行评估，被认为值得支持。

项目成果

IIoT Deployment of a Physics-Informed Deep Learning Model for Online Bearing Fault Diagnostics

IIoT 部署基于物理的深度学习模型，用于在线轴承故障诊断

• 发表时间: 2023
• 期刊: Proceedings of the 2022 International Symposium on Flexible Automation
• 作者: Lu, Hao;Allen, Cade;Nemani, Venkat;Hu, Chao;Zimmerman, Andrew
• 通讯作者: Zimmerman, Andrew

A physics-informed feature weighting method for bearing fault diagnostics

• DOI: 10.1016/j.ymssp.2023.110171
• 发表时间: 2023-02-07
• 期刊: MECHANICAL SYSTEMS AND SIGNAL PROCESSING
• 影响因子: 8.4
• 作者: Lu, Hao;Nemani, Venkat Pavan;Zimmerman, Andrew T.
• 通讯作者: Zimmerman, Andrew T.