Reliability prediction of fault tolerant machining system with reboot and recovery delay

Shekhar, Chandra; Jain, Madhu; Raina, Anupuma; Iqbal, Javid

doi:10.1007/s13198-017-0680-y

Cited by 10 publications

(6 citation statements)

References 32 publications

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“…The fault-tolerant systems represent the high-confidential systems which even in unfavorable conditions operates in a proper way providing all functionalities due to the ability to tolerate single faults. These kinds of systems have the advantages of high reliability, availability, security, stability, manageability and serviceability [17,18,19,20,21].…”

Section: Theoretical Backgroundmentioning

confidence: 99%

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An Advanced Quick-Answering System Intended for the e-Government Service in the Republic of Serbia

2019

APH

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Many of the services incorporated in the e-Government of the Republic of Serbia need a quick-answer system to meet the continually increasing demands of the citizens for easy, fast and effective obtaining of the requested information. However, the public administration of the Republic of Serbia contains a significant amount of unstructured data S. Nedeljkovic et al. An Advanced Quick-Answer System Intended for the e-Government Service of the Republic of Serbia-154-arranged in the documents. Thus, it is necessary to provide an automatic classification system based on the principle query-document. The question-answering (Q&A) system related to the Crime domain of the e-Government service of the Republic of Serbia represents a system for achieving the quick replies on citizens' questions. The Q&A system is based on the data mining, text mining, natural language processing, question answer, Bag of Words and N-gram analysis. A similarity measure (distance) is a significant parameter of the Q&A system due to its direct impact on searching speed and distance from wanted documents. Here, three most commonly used similarity measures are used: Cos, Jaccard and Euclid. The primary goal is to determine the similarity measure which provides the most precise results in the crime domain, and that similarity measure is used as a referent one. Due to the high importance of a similarity measure, we use the above three similarity measures, in the process of selecting the most appropriate similarity measure. The selection of the similarity measure is performed using the principles of redundancy and fault tolerance. Specifically, the principle of triple modular redundancy (TMR) with one voter is used. The proposed system is verified by the experiments with real citizen queries. The results show that the proposed system achieves good performance.

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Section: Theoretical Backgroundmentioning

confidence: 99%

“…The related verification parameters were calculated using Eq. (17)- (20). The precision, recall, and F 1 parameter focused on true positives, i.e., the positive examples of the gold standard.…”

Section: Experimental Evaluation -Case Study Qanda System For E-governmmentioning

confidence: 99%

An Advanced Quick-Answering System Intended for the e-Government Service in the Republic of Serbia

2019

APH

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“…Shekhar et al (2014) evaluated the MTTF and availability of redundant MRP with switching failure and reboot delay. Recently, Shekhar et al (2018) dealt with the reliability analysis of the multi-component fault-tolerant system having the provision of multi-warm spares and reboot process. Yang and Tsao (2019) derived reliability and availability function for a repairable system having the provision of standby units with the unavailability of the repair facility.…”

Section: Introductionmentioning

confidence: 99%

Fault-tolerant redundant repairable system with different failures and delays

Shekhar

Kumar

Varshney

et al. 2019

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Purpose The internet of things and just-in-time are the embryonic model of innovation for the state-of-the-art design of the service system. This paper aims to develop a fault-tolerant machining system with active and standby redundancy. The availability of the fault-tolerant redundant repairable system is a key concern in the successful deployment of the service system. Design/methodology/approach In this paper, the authors cogitate a fault-tolerant redundant repairable system of finite working units along with warm standby unit provisioning. Working unit and standby unit are susceptible to random failures, which interrupt the quality-of-service. The system is also prone to common cause failure, which tends its catastrophe. The instantaneous repair of failed unit guarantees the increase in the availability of the unit/system. The time-to-repair by the single service facility for the failed unit follows the arbitrary distribution. For increasing the practicability of the studied model, the authors have also incorporated real-time machining practices such as imperfect coverage of the failure of units, switching failure of standby unit, common cause failure, reboot delay, switch over delay, etc. Findings For deriving the explicit expression for steady-state probabilities of the system, the authors use a supplementary variable technique for which the only required input is the Laplace–Stieltjes transform (LST) of the repair time distribution. Research limitations/implications For complex and multi-parameters distribution of repair time, derivation of performance measures is not possible. The authors prefer numerical simulation because of its importance in the application for real-time uses. Practical implications The stepwise recursive procedure, illustrative examples, and numerical results have been presented for the diverse category of repair time distribution: exponential (M), n-stage Erlang (Ern), deterministic (D), uniform (U(a,b)), n-stage generalized Erlang (GE[n]) and hyperexponential (HE[n]). Social implications Concluding remarks and future scopes have also been included. The studied fault-tolerant redundant repairable system is suitable for reliability analysis of a computer system, communication system, manufacturing system, software reliability, service system, etc. Originality/value As per the survey in literature, no previous published paper is presented with so wide range of repair time distribution in the machine repair problem. This paper is valuable for system design for reliability analysis of the fault-tolerant redundant repairable.

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“…Researchers evaluated the MTTF and availability of redundant machine repair problem with switching failure and reboot delay [18]. Recently, in [19], authors dealt with the reliability analysis of the fault-tolerant multi-component machining system having multi-warm spares and reboot provisioning. In [15], the authors discussed the coverage factor of various types of failures in the multi-component repairable system.…”

mentioning

confidence: 99%

“…Now, we develop a recursive method to get the explicit expression P 2,0 (0) and P 1,0 (0) in term of P 2,1 as follows: Substituting Eq n s (17), (19), and (20) into Eq n (21), and setting s = 2λ in Eq n (21), it follows…”

mentioning

confidence: 99%

\bf{M/G/1} fault-tolerant machining system with imperfection

Shekhar¹,

Kumar²,

Varshney³

et al. 2021

Journal of Industrial &Amp; Management Optimization

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The internet of things (IoT) is an emerging archetype of technology for the guaranteed quality of services (QoS). The availability of the uninterrupted power supply (UPS) is one of the most challenging criteria in the successful implementation of the service system of IoT. In this paper, we consider a fault-tolerant power generation system of finite operating machines along with warm standby machine provisioning. The time-to-failure for each of the operating and standby machines are assumed to be exponentially distributed. The time-to-repair by the single service facility for the failed machine follows the arbitrary distribution. For modeling purpose, we have also incorporated realistic machining behaviors like imperfect coverage of the failure of machines, switching failure of standby machine, reboot delay, switch over delay, etc. For the evaluation of the explicit expression for steady-state probabilities of the system, the only required input is the Laplace-Stieltjes transform (LST) of the repair time distribution. The step-wise recursive procedure, illustrative examples, and numerical results have been presented for the following different type of repair time distribution: exponential (M ), n-stage Erlang (Ern), deterministic (D), uniform (U (a, b)), n-stage generalized Erlang (GEn) and hyperexponential (HEn). Concluding remarks and future scopes have also been included.1. Introduction. With the advent of latest technologies, the internet of things (IoT) becomes the great boon for human civilization. It requires various independent working systems like computing system, communication system, power supply system, etc. Power supply system is more prone to failure in nature among these and necessary to be fault-tolerant. The power generation failure causes power interruption which affects adversely on the efficiency, quality, and output of the system. Critical fault-tolerant system recurrently must use redundancy if it is required to

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Reliability prediction of fault tolerant machining system with reboot and recovery delay

Cited by 10 publications

References 32 publications

An Advanced Quick-Answering System Intended for the e-Government Service in the Republic of Serbia

An Advanced Quick-Answering System Intended for the e-Government Service in the Republic of Serbia

Fault-tolerant redundant repairable system with different failures and delays

\bf{M/G/1} fault-tolerant machining system with imperfection

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