Read e-book online Complex System Reliability: Multichannel Systems with PDF

By Albert Myers

ISBN-10: 1849964130

ISBN-13: 9781849964135

Complex procedure Reliability offers a state of the art therapy of complicated multi-channel method reliability review and gives the needful instruments, ideas and algorithms required for designing, comparing and optimizing ultra-reliable redundant systems.

Critical issues that make Complex method Reliability a special and definitive source comprise:
• redundant method research for k-out-of-n platforms (including complicated structures with embedded k-out-of-n constructions) regarding either ideal and imperfect fault insurance;
• imperfect fault insurance research options, together with algorithms for assessing the reliability of redundant platforms during which each one aspect is topic to a given assurance price (element point assurance) or during which the approach makes use of vote casting to prevent the results of a failed aspect (fault point coverage); and
• state of the art binary choice diagram research thoughts, together with the most recent and most productive algorithms for the reliability evaluation of enormous, advanced redundant systems.

This functional presentation comprises a number of totally labored examples that offer particular reasons of either the underlying layout rules and the ideas (such as combinatorial, recursive and binary selection diagram algorithms) used to acquire quantitative effects. the various labored examples are in line with the layout of contemporary electronic fly-by-wire regulate procedure technology.

Complex procedure Reliability presents in-depth insurance of structures topic to both ideal or imperfect fault insurance and in addition the newest innovations for properly assessing the reliability of redundant structures that use mid-value-select balloting as their basic technique of redundancy administration. it's a useful source for these thinking about the layout and reliability evaluation of hugely trustworthy platforms, fairly within the aerospace and automobile sectors.

Springer sequence in Reliability Engineering publishes top of the range books in very important components of present theoretical study and improvement in reliability, and in parts that bridge the space among concept and alertness in components of curiosity to practitioners in undefined, laboratories, company, and government.

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Additional resources for Complex System Reliability: Multichannel Systems with Imperfect Fault Coverage

Example text

The correct modeling of imperfect fault coverage depends on the specifics of the system’s architecture and redundancy management approach. This chapter provides various techniques for handling the effects of imperfect fault coverage in the assessment of redundant system reliability. 1 Background Computer-controlled systems that are used in life-critical applications must often employ redundancy to meet the required levels of reliability. An increasing interest in the development of highly reliable systems has been a significant reason for the extensive treatment in the literature of reliability models for k-out-of-n:G systems.

In the example above, A and B might represent sets of quad-redundant system components, for instance. In Chapter 5, it will be shown that redundant systems can be modeled in a similar fashion, even though the redundant elements may be represented by complex reliability polynomials rather than simply by individual component reliabilities. Since the ⊕ and ⊗ operators define operations on Bernoulli random variables, all of the laws and theorems associated with Boolean algebra will hold. Clear[a, b, c]; 1 Two sets—redundant components in this case—are disjoint if they have no elements in common.

N) has a coverage value ci (that is, a probability of individual component fault coverage). The system is failed if any pi is failed uncovered, or if more than n − k of the components pi are failed. ELC is appropriate if the RM selection among the redundant elements is made based on a self-diagnostic capability in the individual elements. That is, the redundant elements have, in addition to their primary output, a status output that indicates the operational status of the element. If ELC is used to model the reliability of a system with redundant elements that use BIT, then the coverage value for a particular element can be modeled as the product of the reliability of the BIT system and the probability that the BIT will correctly identify the failure of its associated element.

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Complex System Reliability: Multichannel Systems with Imperfect Fault Coverage by Albert Myers


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