Optimal activation order vs. redundancy strategies in reliability optimization problems

Ardakan, Mostafa Abouei; Talkhabi, S.; Juybari, Mohammad N.

doi:10.1016/j.ress.2021.108096

Cited by 11 publications

(7 citation statements)

References 40 publications

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“…To study the functioning of the system with a active (on) reserve, the method of reliability theory was applied to calculate the probability of trouble-free operation of the system with a active (on) reserve [17][18][19][20].…”

Section: The Study Materials and Methodsmentioning

confidence: 99%

Improving the scientific methodological approach to determining the appropriate type of reservation of a reconnaissance fire system

Maistrenko

Stetsiv

Savelіev

et al. 2023

EEJET

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The object of this study is the process of choosing the appropriate types of reservation of reconnaissance fire systems under the conditions of performing a combat mission. The problem that was solved is the unsuitability of existing scientific and methodological apparatus to substantiate the appropriate type of reservation for reconnaissance and fire systems under specific conditions for performing a combat mission. Possible types of reservation of reconnaissance fire systems have been analyzed. Based on the results of the analysis, appropriate types of reservation were established, in particular, active, unactive, majoritarian sliding, distributed, for subsystems, as well as general reservation. A feature of this analysis is that it was carried out taking into account the peculiarities of the functioning of reconnaissance and fire systems. This makes it possible to eliminate existing problem associated with the complexity of the use of reconnaissance and fire systems in a combat event. The scope of practical use of the results of the proposed analysis is the management processes associated with the creation, layout, and use of reconnaissance and fire systems in military administration bodies. A methodology for determining the appropriate type of reservation of reconnaissance fire systems has been devised. A feature of the proposed procedure is the choice of such a type of reservation that makes it possible to save the resource of elements, provided that the task is completed. The proposed methodology ensures an increase in the stability of the functioning of reconnaissance and fire systems by an average of 20 % for the conditions adopted within the limits of the example. The proposed methodology closes the problem part, which concerns the procedure and rules for choosing the appropriate type of reservation. The scope and conditions for the practical use of the proposed methodology are management processes related to the planning and determination of the projected effectiveness of hostilities by military authorities

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Section: The Study Materials and Methodsmentioning

confidence: 99%

Improving the scientific methodological approach to determining the appropriate type of reservation of a reconnaissance fire system

Maistrenko

Stetsiv

Savelіev

et al. 2023

EEJET

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“…Thus, to intactly review the reliability improvement effect of the mixed redundancy strategy, Sadeghi and Roghanian [21] have exploited the optimal solutions obtained by a general algebraic modeling system (GAMS) for the same RAP. Some studies, such as [22][23][24][25][26][27], have extended RAP to allow for subsystems composed of heterogeneous components. In refs.…”

Section: Introductionmentioning

confidence: 99%

Lifetime Distribution for a Mixed Redundant System with Imperfect Switch and Components Having Phase–Type Time-to-Failure Distribution

Baek,

Kim

2024

Mathematics

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Recently, a mixed redundancy was introduced among the redundant design strategies to achieve a more reliable system within the equivalent resources. This study deals with a lifetime distribution for a mixed redundant system with an imperfect fault detector/switch. The lifetime distribution model was formulated using a structured continuous Markov chain (CTMC) and considers the time-to-failure (TTF) distribution of a component as a phase-type distribution (PHD). The model’s versatility and practicality are enhanced because the PHD can represent diverse degradation patterns of the components exposed to varied operating environments. The model provides accurate reliability for a mixed redundant system by advancing the approximate reliability function suggested in previous studies. Furthermore, the model would be useful in system design and management because it provides information such as the nth moment of the system’s lifetime distribution. In numerical experiments on some examples, the mixed redundancy was confirmed to devise a more reliable system than the existing active and standby redundancies, and the improvement effect increased as the number of redundant components decreased. The optimal structure for maximizing the expected lifetime of the system changes depends on the reliability of the components and fault detector/switch.

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“…A new switching strategy for standby components was proposed by Ardakan et al 28 . In studies on active switching strategies, most scholars adopt periodic switching as the switching strategy between components 29–32 . The periodic switching policy can effectively reduce the probability of component failure.…”

Section: Introductionmentioning

confidence: 99%

“…A new switching strategy for standby components was proposed by Ardakan et al 28 In studies on active switching strategies, most scholars adopt periodic switching as the switching strategy between components. [29][30][31][32] The periodic switching policy can effectively reduce the probability of component failure. However, the periodic switching interval is determined mainly based on the engineer's experience, which can lead to insufficient accuracy.…”

mentioning

confidence: 99%

A novel condition‐based maintenance policy considering imperfect switching for warm standby systems

Qi,

Wang,

Wang

et al. 2023

Quality & Reliability Eng

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This paper proposes a novel condition‐based maintenance model for a two‐component warm standby system considering an imperfect switching policy. Unlike the conventional models, joint optimization of preventive and failure switching strategies is investigated. The standby component can be switched preventively when the component reaches the preventive maintenance (PM) threshold before the online one fails. The failure switching is triggered when the online component reaches the corrective maintenance (CM) threshold. In addition, the switching mechanism between the two components is related to the order fulfillment rate. The optimal PM threshold and order fulfillment rate can be derived by minimizing the long‐term average cost rate. A numerical example is provided to demonstrate the robustness of the decision model under different scenarios through sensitivity analysis. Ultimately, the effectiveness of the proposed model in this article was verified by comparing the models.

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Optimal activation order vs. redundancy strategies in reliability optimization problems

Cited by 11 publications

References 40 publications

Improving the scientific methodological approach to determining the appropriate type of reservation of a reconnaissance fire system

Improving the scientific methodological approach to determining the appropriate type of reservation of a reconnaissance fire system

Lifetime Distribution for a Mixed Redundant System with Imperfect Switch and Components Having Phase–Type Time-to-Failure Distribution

A novel condition‐based maintenance policy considering imperfect switching for warm standby systems

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