Optimal inspection for missions with a possibility of abortion or switching to a lighter regime

Finkelstein, Maxim; Hwan, Ji; Ghosh, Shyamal

doi:10.1007/s11750-020-00591-w

Cited by 4 publications

(5 citation statements)

References 36 publications

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“…This figure shows the optimal maintenance time. The maximum values 53.69, 41.31 and 33.56 are achieved 9 The simulation parameters are based on widely used literature on reliability analysis [27], [38]. 10 The time on the y-axis of Fig.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…Remark 1 (Choice of RIS degradation model): Our choice of the RIS degradation model is based on observed phenomena in similar advanced electronic systems exposed to environmental stresses over time [18], [19], [27]. The model accounts for the cumulative effect of factors such as temperature fluctuations, mechanical stress, and electromagnetic exposure, which align with documented cases of hardware degradation in literature.…”

Section: System Modelmentioning

confidence: 99%

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Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

Mondal,

Ghosh,

Singh

et al. 2024

IEEE Open J. Commun. Soc.

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In this paper, we address the critical aspect of hardware ageing effects in reconfigurable intelligent surfaces (RISs), whereby the problem of extending the RIS's life cycle under the impact of non-residual stochastic hardware impairment is considered. Through the replication of the RIS hardware and diverse wireless environments within a statistical simulation environment, we formulate an electronic maintenance framework (EMF) for RIS, where we incorporate non-residual impairments through stochastic modelling and determine the electronic reliability of the system. Accordingly, we derive optimal analytical solutions within the EMF to determine whether systematic maintenance of the RIS hardware should be done immediately or postponed in order to extend the expected life cycle of the RIS system. Furthermore, for the scenario with imperfect maintenance of the RIS-aided system, a reliable communication framework (RCF) is also introduced with residual impairments to assess the error probability of the RIS-aided communication. The RCF is established by deriving the distribution of the received signal-to-interference-plus-noise ratio in the presence of residual hardware impairment arising due to imperfect maintenance of the RIS system.Extensive numerical examples are provided to elucidate the derived solutions and illustrate the reliability performance of the proposed framework under hardware impairments.INDEX TERMS Industrial informatics and communication, electronic maintenance, industrial internet-ofthings, reliability, reconfigurable intelligent surfaces, hardware impairment.

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Section: Numerical Resultsmentioning

confidence: 99%

Section: System Modelmentioning

confidence: 99%

Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

Mondal,

Ghosh,

Singh

et al. 2024

IEEE Open J. Commun. Soc.

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“…Results obtained in the paper can be considered in the framework of the studies of a possible life extension for systems, that in a different context of preventive maintenance, were carried out in our earlier work (Cha and Finkelstein, 30 Finkelstein et al 31 ). However, these and other relevant papers (see, e.g.…”

Section: Discussionmentioning

confidence: 99%

“…It should be noted that the approach developed in this paper is somehow related to our earlier studies of possible life extension for degrading systems in a different context (see Cha and Finkelstein, 30 Finkelstein et al 31 ). However, these and other relevant papers do not consider an output generated by a system in the corresponding optimization problems.…”

Section: Introductionmentioning

confidence: 95%

Termination versus operation extension for degrading systems

Finkelstein

Hwan

Langston

2022

Proceedings of the Institution of Mechanical Engineers, Part O:

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Optimal cost-wise termination of operation for degrading engineering systems is considered that maximizes the expected profit for the infinite horizon. Termination reduces probability of the future failure that usually results in substantial loss. The cases of non-repairable and minimally repairable systems are discussed. The black-box scenario without additional information on stochastic process of degradation and that with additional information are considered. The novel sequential optimal inspection policy is described. It is proved that the termination time can be postponed in an optimal way if the degradation observed at inspection is smaller than the defined level. The developed approach allows for optimal usage of system’s “resource.” The detailed numerical examples illustrate the findings.

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“…In Finkelstein et al, 5 the cost‐wise optimization problem was discussed for missions with a possibility of abortion and change in load at inspection. The important feature of this model was that the mission time was fixed , whereas the amount of work to be accomplished was not set.…”

Section: Introductionmentioning

confidence: 99%

Balancing load and performance for different failure models

Finkelstein

Hwan

Chackraborty

2021

Appl Stoch Models Bus & Ind

Self Cite

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In this article, we discuss an optimal loading for items with lifetimes described by failure models that are popular in reliability and statistics. The obtained results can be relevant, for example, for production/manufacturing systems. The expected productivity and the mission success probability are maximized with respect to the value of a load. It is shown that the optimal load for the considered settings is not necessarily the load that maximizes the production rate.The crucial function in our discussion is the production rate over the load. It is shown that, depending on the model, the optimal load can be equal, smaller or larger than the value of the load that achieves the maximum of this function. The accelerated life and the proportional hazards failure models are considered, as well as the additive hazards model. Illustrative examples confirm our theoretical findings.

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Optimal inspection for missions with a possibility of abortion or switching to a lighter regime

Cited by 4 publications

References 36 publications

Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

Extending RIS Life Span for Reliable Communication Under Hardware Ageing Effects

Termination versus operation extension for degrading systems

Balancing load and performance for different failure models

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