Abstract. A new methodology for the reliability optimization of a k dissimilar-unit nonrepairable cold-standby redundant system is introduced in this paper. Each unit is composed of a number of independent components with generalized Erlang distributions of lifetimes arranged in a series-parallel configuration. We also propose an approximate technique to extend the model to the general types of...

A method of evaluating the single-event effect soft-error vulnerability of space instruments before launched has been an active research topic in recent years. In this paper, a multi-signal flow graph model is introduced to analyze the fault diagnosis and meantime to failure (MTTF) for space instruments. A model for the system functional error rate (SFER) is proposed. In addition, an experiment...

Advancement in wireless sensor networks technology enables a wide range of applications such as health care, industrial automation, ambient conditions monitoring and security and defense systems. WSNs designers are facing many challenges in meeting application requirements e.g. reliability, fault tolerance, lifetime, throughput and responsiveness etc as application requirements and environmenta...

With increasing deployment of offshore wind farms further from shore and in deeper waters, the efficient effective planning operation maintenance (O&M) activities has received considerable attention energy developers operators recent years. The O&M is a complicated task, as it depends on many factors such asset degradation rates, availability resources required to perform tasks (e.g., t...

The unprecedented scale and ubiquity of the Internet Things (IoT) introduce a maintainability challenge. IoT networks operate in diverse harsh environments that impose thermal stress on devices. lifetime these can be limited by hardware failures resulting from exacerbated reliability degradation mechanisms at high temperatures. In this paper, we propose novel adaptive distributed reliability-aw...

In order to solve the problem that online upgrade system for vehicle ECU (Electronic Control Unit) has poor reliability and stability, this paper presents a reliability assessment model based on Markov mathematical model. According to the practical operation of online upgrade system, this paper divided the work state of the system into eight kinds such: normal running state, equipment failure s...

Exercise 1 Let us consider a system composed of n different components denoted 1, 2 ……n, with m identical replicas of each component. Two redundancy strategies are studied:-GR, in which redundancy is applied globally at the system level: the architecture is composed of m identical copies of the system that are organized according to a parallel structure.-LR, in which redundancy is applied local...