The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In recent years cloud computing has been considered among superior technologies worldwide. The main reason is the services and sources provided the users by the clouds. In order to avoid over interactions of the servers and given the work volume and green computations, load balancing in cloud computing is of enormous importance requiring dynamic load distribution in a proportionate manner among the...
Reliability of electric drives is of paramount importance for safety critical applications in transportation, medical and military industries. While numerous fault tolerant machine and inverter topologies have been developed for improving drive reliability, comprehensive reliability evaluation of fault tolerant electric drive systems has not been reported in literature. This paper performs quantitative...
Bulk electrolytic capacitors are used in single phase inverters to reduce the ripple in dc link voltage which is due to the pulsating nature of the instantaneous power. The reliability of an inverter is limited by the lower lifetime of these capacitors. In addition, the switching devices also deteriorate the reliability, due to their significant failure rate. In order to improve the overall reliability...
Embedded software system has been the major form of the current software system, and therefore, the reliability evaluation of embedded software system is becoming constantly more important. Since the black-box model is not suitable because of the large scale and heterogenicity of the embedded system, the architecture-based approach is proposed to analyze the reliability of large and embedded software...
Computer networks serve as critical infrastructure to services in business, health care, and education. Targeted attacks and random failures may cause link or node removals, which in turn can cause significant disruption to the availability of network services. Designing a network topology to provide acceptable levels of service in the face of these challenges can save both lives and money. A number...
In this work, we propose a technique based on task recomputation in order to improve reliability without incurring any performance degradation in embedded systems. The technique focuses on recomputing the task using the slack available on idle processors thereby maximizing the usage of the processing elements. In conjunction with task recomputation, we employed two metrics called as Fault Propagation...
Software-based methods for the detection of control-flow errors caused by transient fault usually consist in the introduction of protecting instructions both at the beginning and at the end of basic blocks. These methods are conservative in nature, in the sense that they assume that all blocks have the same probability of being the target of control flow errors. Because of that assumption they can...
In this paper enhanced algorithm for the real time distributed control system fault-tolerance providing is presented. The algorithm is developed having the parallel simulated annealing technique as a base with the accent on the quenching temperature schemes. The combination of the parallel multistart technique and chosen temperature scheme allows to speed up to acquire the solution with the adequate...
Fault tolerance is an approach for getting desirable services in the presence of fault. A fault tolerance technique can be static and dynamic depending upon occurrence of fault in a system. A system can be failed if the fault is not tolerated on time. The complexities of systems are increasing day by day which results increasing failure rate in the real time systems. In this paper, a dynamic fault...
In the modern computing industry, cloud computing has drawn huge attention from researchers in government and enterprises. Until now, reliability in cloud computing has received limited consideration hence Fault tolerance in cloud computing is the foremost challenging issue. In cloud computing environment, the clients subcontract their data to the cloud that performs the desired computing operations...
This paper presents analysis of post-failure behaviour of MOSFETs and IGBTs operating in a series connected string. The aim of this experimental study is to analyse the operation of devices in case of sudden loss of controllability, leading to repetitive avalanche conditions at relatively low current and subsequent failure due to overheat. For redundant designs it is important that the devices are...
Memory faults are the most common fault in current systems. Strong memory error protection techniques prevent most memory faults from immediately affecting applications and the system, but come at a high and possibly increasing cost as system size increases and fabrication technology continues to scale. To effectively protect against memory faults and errors, a combination of online error-checking...
DC-link current sensing enables adjustable speed drives to be designed compactly. Except for the low-impedance earth-fault protection the whole drive is protected by a single current-sensing element as well as drives with three current sensors on the output phases. A new indirect detection method for improving the low-impedance earth-fault protection of adjustable speed drives with a low-side DC-link...
The Direct-Lead-Bonding (DLB) interconnection appears to be a promising technology for power-module (PM). Nevertheless, the absence of wire-fuse-effect in case of extreme failure, compared to classical wire-bonding, leads authors to rethink fail-safe and fault-tolerant strategies for critical converter. Therefore, this paper will provide a comparative study between these two designs in terms of failure-mode...
The present paper describes how fault-tolerance concepts are implemented in electrical drives for high reliability applications, such as in the More Electric Aircraft.
Multiphase DC-DC converters with coupled inductors are applied to increase the power density and efficiency. But coupling also creates an interference between still active and failed phases as well as influences the inductance characteristic. This paper investigates the fault-tolerance of multiphase DC-DC converters with focus on the behaviour of the total as well as phase current ripples and the...
We present "programmer-guided reliability" (PGR) as a systematic conceptual approach to address the expected rise in soft errors in coming extreme-scale systems at the application level. The approach involves instrumentation of the application with code to detect data corruption errors. The location and nature of these error detectors are at the discretion of the programmer, who uses their...
Fault-tolerance is becoming an essential feature in the design of Networked Control Systems (NCSs). Furthermore, Sensor-to-Actuator (S2A) architectures have shown some advantages over conventional In-Loop architectures. This paper focuses on fault-tolerant controllers in the context of S2A systems. It proposes the use of Triple Modular Redundancy at the controller level. The fault-tolerant controller...
As hard disk failure rates are rarely improved and the reconstruction time for TB-level disks typically amounts to days, multiple concurrent disk/storage node failures in datacenter storage systems become common and frequent. As a result, the erasure coding schemes used in datacenters must meet the critical requirements of high fault tolerance, high storage efficiency, and fast fault recovery. In...
Commercial-off-the-shelf (COTS) many-core processors offer the performance needed for computational-intensive safety-critical real-time applications such as autonomous driving. However, these consumer-grade many-core processors are increasingly susceptible to faults because of their highly integrated design.In this paper, we present a fault-tolerance framework that eases the usage of COTS many-core...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.