This article deals with modeling and design of a new fault-tolerant voter circuit. Majority voted redundancy is increasingly implemented in fault-tolerant design today. A voter is used in these implementations to determine a possibly correct result through the majority vote. The reliability of the voter circuit should be much higher than that of the other circuit elements; otherwise it will wip...

With the ever increase of complexity and expense of industrial systems, there is less tolerance for performance degradation, productivity decrease and safety hazards, which greatly stimulates to detect and identify any kinds of potential abnormalities and faults as early as possible, and implement realtime fault-tolerant operation for minimizing performance degradation and avoiding dangerous si...

The Switched Reluctance Machine (SRM) based electrical drive systems are ideal for diverse automotive safety-critical applications where the fault tolerance is a basic requirement. The phase independence characteristics of the SRM enable it to operate under partial phase failure conditions also in its classical construction. Its reliability can be improved by applying special fault tolerant des...

This technical report considers the problem of developing dependable component-based software systems through an architectural approach, which combines fault prevention, fault removal, and fault tolerance techniques. The architecture-centred solution comprises a rigorous approach, which systematises the verification and validation of fault tolerant systems. Using B-Method and CSP, we analyse th...

A tree-based fault-tolerant multicast algorithm built on top of pipelined circuit switching is presented. For every multicast message, a multicast tree is constructed in a distributed and adaptive fashion. An underlying fault-tolerant routing algorithm is used to tolerate faulty nodes and links without requiring nodes to have global fault information. The multicast algorithm is provably deadloc...

Application of formal methods helps us to gain confidence in building correct software. On the other hand, to guarantee dependability of the overall system we need to build fault tolerant software, i.e., software which is not only fault-free but also is able to cope with faults of other system components. Obviously, this goal is attainable only if fault tolerance mechanisms constitute an intrin...

In this paper, the problem of sensor fault and delay tolerant control problem for a class of networked control systems under external disturbances is investigated. More precisely, the dynamic characteristics of the external disturbance and sensor fault are described as the output of exogenous systems first. The original sensor fault and delay tolerant control problem is reformulated as an equiv...

An increasing number of applications are demanding real-time performance from their multiprocessor systems. For many of these applications, a failure may produce disastrous results. Such failures are avoided in hard real-time systems by the use of fault-tolerance. In hard real-time multiprocessor scheduling, this fault tolerance may be provided by including several task backups in each schedule...

n this paper, we propose an optimal fault−tolerant algorithm for distributed event detection in wireless sensor networks. Two important problems are addressed: 1. How to handle both the noise−related measurement error and sensor fault simultaneously in fault−tolerant detection? 2. How to choose a proper neighborhood size n for a sensor node in fault correction such that the maximum energy could...

Concurrent C is an upward-compatible parallel extension of C which runs on a variety of uniprocessors and multiprocessors. A Concurrent C program consists of a set of processes which execute in parallel and interact with each other by sending messages. Fault-Tolerant (FT) Concurrent C, an extension of Concurrent C, is a tool for writing fault-tolerant distributed programs, based on the replicat...