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Microgrids are defined as an area of network that is capable of operating autonomously from the rest of the electricity system. They achieve this by containing enough energy resources to meet all incorporated electrical (and thermal) loads, and by coordinating control in order to meet the participants' aims, and afford adequate quality/reliability of power and heat supply. From an economic point-of-view,...
D-optimality is adopted in the optimum design of accelerated life testing in recent years. However, for some cases, the optimization results tend to approach the extreme stress levels and processing accelerated life testing under such stress levels would not obtain much information about lifetime and reliability of the test units. This paper presents an optimum design of constant stress accelerated...
Web service composition integrating several single services by logical structure can fulfill users' complex requests while a single one cannot do this. As one of service's nonfunctional components, quality of service (QoS) can be used as the criteria for service selection process and evaluation of composition results. However, so far there is no suitable method to estimate composition result and existing...
Traditional Reliability Engineering lacks powerful methods and tools on earlier development stages; it takes less effect on product conception definition and system design. There are also some tough problems for applying Traditional Reliability approaches on civil products, such as how to develop high reliable products with Commercial, off-the-shelf (COTS) components? How to greatly reduce the time...
In this paper, an integrated methodology is developed for optimizing inspection and maintenance of a component where delayed repair is considered to be one of feasible options. The models of failures, risk and life cycle cost are developed using probability, stochastic process and the delay time concept. The model is intended to optimise the inspection intervals and the delay of repair simultaneously...
This paper develops a rigorous and practical method for estimating the reliability-with confidence regions-of a complex system based on a combination of full system and subsystem (and/or component or other) tests. It is assumed that the system is composed of multiple processes (e.g., the subsystems and/or components within subsystems), where the subsystems may be arranged in series, parallel (i.e...
This paper presents a method enabling the evaluation of the averaging fault-tolerant technique, using the output probability density functions of unreliable units that are acquired from Monte Carlo simulations. The method has been verified by comparing numerical simulations and analytical developments. A fault-tolerant four-layer architecture using averaging and with both fixed and adaptable threshold...
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