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The ubiquitous adoption of portable smart devices has enabled a new way of communication via Pocket Switched Networks (PSN), whereby messages are routed by personal devices inside the pockets of ever-moving people. PSNs provide opportunities for various interesting applications such as location based social networking, geolocal advertising, and military missionsin active battlefields where the central...
As feature sizes of transistors began to approach atomic levels, aging effects have become one of major concerns when it comes to reliability. Recently, aging effects have become a subject to voltage scaling as the latter entered the sub-μs regime. Hence, aging shifted from a sole long-term (as treated by state-of-the-art) to a short and long-term reliability challenge. This paper interrelates both...
Commercially available Silicon Carbide (SiC) MOSFET power modules often have a design based on existing packages previously used for silicon insulated-gate bipolar transistors. However, these packages are not optimized to take advantage of the SiC benefits, such as, high switching speeds and high-temperature operation. The package of a half-bridge SiC MOSFET module has been modeled and the parasitic...
Enhancement of cost effective energy conservation technology plays a vital role in process industries. Hence acquiring star-delta based energy conservation scheme for induction motors is common in industries. But the impact of transient and vibration during switchover are the main hindrance of the star-delta based energy conservation scheme. Thus, analyzing the effect of transient and vibration is...
Built-in self-repair (BISR) approach utilized mostly in regular structures of memory cores has been a promising approach to increase the reliability of any type of integrated circuit. BISR considers spare blocks which in the case of a fault occurrence are used to replace defected circuit parts. A new fault detection and repair procedure with a generic BISR architecture for logic cores is presented...
This paper presents an arbitration mechanism to balance bandwidth consumption or data throughputs between packets in a network-on-chip (NoC) with ID-based wormhole cut-through switching method. When data traffic flowing through a network communication link is high, the bandwidth space of the link, which is comsumed by a message or a data stream, could be affected by the distance between the source...
For more than 20 years modern developments of auxiliary power converters (APC) for railway applications have focused on demands for low dimensions and mass, higher efficiency and simplified maintenance. Currently under an increasing number of electronic loads, requiring high-quality electric energy and under the ever increasing running distances of locomotives a requirement of high reliability becomes...
This paper presents a mathematical framework for performance analysis of Behavior Trees (BTs). BTs are a recent alternative to Finite State Machines (FSMs), for doing modular task switching in robot control architectures. By encoding the switching logic in a tree structure, instead of distributing it in the states of a FSM, modularity and reusability are improved. In this paper, we compute performance...
In this paper, Parallel system of DC-DC Converter applied to DC distribution system for building Applications. Power supply device of DC distribution needs a large power system that is requires Efficiency and reliability of the power conversion systems. If A single converter supplies power to the all load connected to DC grid, Temperature rise, reduction in life of system and capacity expansion is...
The polarity reversal (PR) is a special working condition of equipments in high voltage direct current (HVDC) transmission. The insulation of HVDC equipments must withstand the electric field stress safely caused by the PR voltage in operation or during a dielectric test at factory. Mathematical model of dielectrics under PR was established in this paper with field-circuit coupling method. A three-layers...
Adapting to meet service requirements to users and growth of market in factory automation and health control equipments, network environment is rapidly changing into the reliable and high-quality Internet. TCP is expected to be a solution of the reliable transport protocol. The carrier class transport network is also expected as a solution of the underlying transport network which supports high availability...
Solid state lighting (SSL) is a new lighting technology based on high brightness light emitting diodes (LED). This technology because of being much more energy efficient, having longer lifetime and design flexibility has attracted the attention of both manufacturers and consumers. This technology looks very promising because of its advantages with respect to conventional lighting systems. Especially...
Because of its great interest, the power systems reliability has been widely investigated in military, industrial and space applications. This paper is presenting an improved fault-tolerant inverter topology with its associated control strategy. This topology has been designed for aerospace industry that puts hard constraints on system reactivity and testability. In addition to the nominal and faulty...
This paper proposes a reliability-aware application mapping for mesh-based NoCs. The proposed reliable mapping, called RMAP, adds redundant communications to the application graph in order to improve the reliability of packet delivery in NoCs. The RMAP divides the application graph into two sub-graphs which have the lowest possible communication with each other. One of the sub-graphs is mapped on...
RS422/485 serial bus is widely used in embedded systems for the medium and long-distance data communication. In this paper, the main technologies of RS422/485 bus application in embedded system such as topology, cabling network matching, over-voltage transient protection, earth technology, failure protection and deadlock are elaborated in detail first, then a specific example of embedded access system...
The coordinated control of internal combustion engine and electric machine is vital to improve driveability and reliability of Parallel hybrid electric vehicle (PHEV). This paper address to the mode-switch problem for powertrain of PHEV, construct a model-based rapid control prototype as a controller by MATLAB/SIMULINK software and dSPACE system for mode-switch control, come up with a mode-switch...
Networks on chips (NoCs) provide a mechanism for handling complex communications in the next generation of integrated circuits. At the same time, lower yield in nano-technology, makes self repair communication channels a necessity in design of digital systems. This paper proposes a reliable NoC architecture based on specific application mapped onto an NoC. This architecture is capable of recovering...
In this paper we present a low cost fault-tolerant attitude determination system to a scientific satellite using COTS devices. We related our experience in developing the attitude determination system, where we combine proven fault tolerance techniques to protect the whole system composed only by COTS from the effects produced by transient faults. We detailed the failure cases and the detection, reconfiguration...
In this paper we propose a set of different configurations of failure recovery schemes, developed for network-on-chip (NoC) based systems. These configurations exploit the fact that communication in NoCs tends to be partitioned and eventually localized. The failure recovery approach is based on checkpoint and rollback and is aimed towards fast recovery from system or application level failures. The...
In this paper, we present a new technique to improve the reliability of H-tree SRAM memories. This technique deals with the SRAM power-bus monitoring by using built-in current sensor (BICS) circuits that detect abnormal current dissipation in the memory power-bus. This abnormal current is the result of a single-event upset (SEU) in the memory and it is generated during the inversion of the state of...
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