some applications are critical and must designed fault tolerant system. usually voting algorithm is one of the principle elements of a fault tolerant system. two kinds of voting algorithm are used in most applications, they are majority voting algorithm and weighted average algorithm these algorithms have some problems. majority confronts with the problem of threshold limits and voter of weight...

fault tolerance is one of the important issues in industries, such as transportation, military, chemical and nuclear sectors. reliability and safety are two vital attributes of fault tolerant systems, and redundancy is a common way to improve these parameters. this article studies the impact of including cold standby spares in system architecture. to do this, it uses the markov model of the sys...

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This paper surveys recent results on fault-tolerant consensus in message-passing networks. We focus on two categories of works: (i) new problem formulations (including input domain, fault model, network model...etc.), and (ii) practical applications. For the second part, we focus on Crash Fault-Tolerant (CFT) systems that use Paxos or Raft, and Byzantine Fault-Tolerant (BFT) systems. We also br...

Runtime verification (RV) is a natural fit for ultra-critical systems, where correctness is imperative. In ultra-critical systems, even if the software is fault-free, because of the inherent unreliability of commodity hardware and the adversity of operational environments, processing units (and their hosted software) are replicated, and fault-tolerant algorithms are used to compare the outputs....

Process groups are a common abstraction for fault-tolerant computing in distributed systems. We present a security architecture that extends.Abstract Concerns about both security and fault-tolerance have had an important. Tion of fault tolerance will face some of the same problems, and benefit from. The security testing prototype is.A Secure and Fault-tolerant framework for Mobile. Of Computer ...

Fault-tolerant control methods have been extensively researched over the last 10 years in the context of chemical process control applications, and provide a natural framework for integrating process monitoring and control aspects in a way that not only fault detection and isolation but also control system reconfiguration is achieved in the event of a process or actuator fault. But almost all t...

• Fault tolerant system System which is redundant to faults so that output is not affected • Why do we need fault tolerant systems? Vast increase in role of embedded systems in day to day applications, critical systems • How to verify the fault tolernace of embedded systems?

The developed software ASNA-2, which is an improved version of the software ASNA-1, is based on the technology of automated estimation of reliability indexes of fault-tolerant systems. This software is designed for automated evaluation of the reliability indexes of fault-tolerant hardware – software systems. This paper describes a software ASNA-2 with the peculiarities of procedures of reliabil...