We focus on synthesis techniques for transforming existing fault-intolerant real-time programs to fault-tolerant programs that provide phased recovery. A fault-tolerant program is one that satisfies its safety and liveness specifications as well as timing constraints in the presence of faults. We argue that in many commonly considered programs (especially in mission-critical systems), when faul...

A fault-tolerant wormhole routing algorithm on meshconnected processors is proposed. The proposed algorithm is based on the solid fault model and allows the fault polygons to be overlapped. The algorithm compares the position of fault region relative to current channel with the fault direction eld of a misrouted message to route around overlapped fault polygons. A node deactivating algorithm to...

software fault-tolerance, process replication failure masking, continuous availability, topology The ambition of fault-tolerant systems is to provide application transparent fault-tolerance at the same performance as a non-fault-tolerant system. Somersault is a library for developing distributed fault-tolerant software systems that comes close to achieving both goals. We describe Somersault and...

The reliable execution of a mobile agent is a very important design issue in building a mobile agent system and many fault-tolerant schemes have been proposed so far. To further develop mobile agent technology, reliability mechanisms such as fault tolerance and transaction support are required. For this purpose, we first identify two basic requirements for fault-tolerant mobile agent execution:...

Fault-tolerant behavior is an important non-finctional requirement for systems that involve high criticality. We present a framework which allows the analysis of faulttolerant behavior to be undertaken. This framework is based on the notion of state machines and tolerance relations. Results concerning fault-tolerant behavior of finite-state machines are presented and an illustrative example is ...

⎯ In this paper, we present a comprehensive experimental assessment of fault coverage for a fault-tolerant VLIW processor, which consists of the error detection, error rollback recovery and reconfiguration mechanisms. We implement the proposed design of fault-tolerant VLIW in VHDL and employ the fault injection to investigate the effects of fault duration, workload variation and the number of r...

The fault tolerant and reliable dissemination is an important issue in WSN, due to the deployment of sensor nodes in hostile environment. Most of the clustering algorithms are concentrated to increases the network lifetime and reduces the energy consumption among the sensor nodes and do not consider the reliability of the networks. Fault tolerance techniques detect and recover the sensor nodes ...

With wide-spread application of power electronic converters in high power systems, there has been a growing interest in system reliability analysis and fault-tolerant capabilities. This paper presents a comprehensive review of conventional fault-tolerant techniques regarding power electronic converters in case of power semiconductor device failures. These techniques can be classified into four ...

The use of metalevel architectures for the implementation of fault-tolerant systems is today very appealing. Nevertheless, all such fault-tolerant systems have used a general-purpose metaobject protocol (MOP) or are based on restricted reflective features of some object-oriented language. According to our past experience, we define in this paper a suitable metaobject protocol, called FT-MOP for...

This paper deals with a fault-tolerant semi-12-phase permanent-magnet synchronous machine (PMSM) used for electric vehicles. High fault-tolerant and low toque ripple features are achieved by employing fractional slot concentrated windings (FSCWs) and open windings. Excessive magnetomotive force (MMF) harmonic components can lead to thermal demagnetization of rotor magnets as well as high core l...