Kernel Reinforcement Learning for sampling-efficient risk management of large-scale engineering systems

IF 9.4 1区 工程技术 Q1 ENGINEERING, INDUSTRIAL
Dingyang Zhang , Yiming Zhang , Pei Li , Shuyou Zhang
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引用次数: 0

Abstract

Mainstream methods for maintenance scheduling of multi-state systems (e.g. aircraft engines) often encounter challenges such as uncertainty accumulation, the need for extensive training data, and instability in the training process, particularly in life-cycle cost management. This paper introduces an innovative Kernel Reinforcement Learning (KRL) approach designed to enhance the reliability and safety of multi-state systems while significantly increasing decision-making efficiency. The policy and value functions are formulated non-parametrically to capture high-value episodes and datasets. KRL integrates probabilistic setups to imbue reinforcement learning with uncertainty, enhancing exploration of state–action spaces. Prior knowledge can be seamlessly integrated with the probabilistic framework to accelerate convergence. To address the memory issues associated with kernel methods when handling large datasets, the kernel matrix is dynamically updated with screened high-value datasets. Numerical evaluations on a k-out-of-n system, a coal mining transportation system, and an aircraft engine simulation demonstrate that the proposed KRL approach achieves faster convergence and reduced life-cycle costs compared to alternative methods. Specifically, KRL reduces the number of training episodes by 2–3 orders of magnitude, with a maximum cost reduction of 92%.
核强化学习用于大规模工程系统的高效采样风险管理
多状态系统(如飞机发动机)的主流维修调度方法经常遇到不确定性积累、需要大量训练数据和训练过程不稳定性等挑战,特别是在全生命周期成本管理方面。本文介绍了一种创新的核强化学习(KRL)方法,旨在提高多状态系统的可靠性和安全性,同时显著提高决策效率。政策和价值函数是非参数化的,以捕获高价值的事件和数据集。KRL集成了概率设置,将不确定性注入强化学习,增强了对状态-行动空间的探索。先验知识可以与概率框架无缝集成,加快收敛速度。为了解决在处理大型数据集时与内核方法相关的内存问题,内核矩阵使用筛选的高值数据集动态更新。对k- of-n系统、煤矿运输系统和飞机发动机仿真的数值评估表明,与其他方法相比,所提出的KRL方法具有更快的收敛速度和更低的生命周期成本。具体来说,KRL将训练集的数量减少了2-3个数量级,最大成本降低了92%。
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来源期刊
Reliability Engineering & System Safety
Reliability Engineering & System Safety 管理科学-工程:工业
CiteScore
15.20
自引率
39.50%
发文量
621
审稿时长
67 days
期刊介绍: Elsevier publishes Reliability Engineering & System Safety in association with the European Safety and Reliability Association and the Safety Engineering and Risk Analysis Division. The international journal is devoted to developing and applying methods to enhance the safety and reliability of complex technological systems, like nuclear power plants, chemical plants, hazardous waste facilities, space systems, offshore and maritime systems, transportation systems, constructed infrastructure, and manufacturing plants. The journal normally publishes only articles that involve the analysis of substantive problems related to the reliability of complex systems or present techniques and/or theoretical results that have a discernable relationship to the solution of such problems. An important aim is to balance academic material and practical applications.
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