Optimal preventive maintenance policy based on reinforcement learning of a fleet of military trucks

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In this paper, we model preventive maintenance strategies for equipment composed of multi-non-identical components which have different time-to-failure probability distribution, by using a Markov decision process (MDP). The originality of this paper resides in the fact that a Monte Carlo reinforcement learning (MCRL) approach is used to find the optimal policy for each different strategy. The approach is applied to an already existing published application which deals with a fleet of military trucks. The fleet consists of a group of similar trucks that are composed of non-identical components. The problem is formulated as a MDP and solved by a MCRL technique. The advantage of this modeling technique when compared to the published one is that there is no need to estimate the main parameters of the model, for example the estimation of the transition probabilities. These parameters are treated as variables and they are found by the modeling technique, while searching for the optimal solution. Moreover, the technique is not bounded by any explicit mathematical formula, and it converges to the optimal solution whereas the previous model optimizes the replacement policy of each component separately, which leads to a local optimization. The results show that by using the reinforcement learning approach, we are able of getting a 36.44 % better solution that is less downtime.
Publisher
SPRINGER
Issue Date
2019-01
Language
English
Article Type
Article
Citation

JOURNAL OF INTELLIGENT MANUFACTURING, v.30, no.1, pp.147 - 161

ISSN
0956-5515
DOI
10.1007/s10845-016-1237-7
URI
http://hdl.handle.net/10203/250247
Appears in Collection
IE-Journal Papers(저널논문)
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