Reliability and maintenance modeling for a production system by means of point process observations

Reza Ahmadi ()
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Reza Ahmadi: Iran University of Science and Technology

Annals of Operations Research, 2024, vol. 340, issue 1, No 2, 3-26

Abstract: Abstract This paper develops a reward model for the optimization of preventive maintenance for a complex production system functioning in any one of k unobservable operating states. The changes of the states are driven by a non-homogeneous Markov (NHM) process X(t) with known characteristics. The system fails according to a point process whose intensity is modulated by the unobservable state. Failures are rectified through minimal repairs (MRs) whose costs are associated with age and the state process X(t). The modeling approach also allows both the revenue stream and the preventive maintenance cost to be characterized by the state process X(t). The paper first formulates the reward model depending on the unobservable state process estimated through the filtering theorem argument by projection on the observed history including failure point process observations. The estimation of the state process allows failure prediction and maximizing revenue stream implemented through scheduling periodic overhauls. A case study is provided to illustrate the proposed method.

Keywords: Production system; Periodic overhaul; Partial information; Minimal repair; Filtering theorem (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s10479-022-05139-8

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