When an engine component participating in the combustion process of an internal combustion piston engine, malfunctions, this malfunction may be reeected in the ensuing cylinder pressure traces, acoustic emission and vibration signals. In this paper, we explore the idea of exploiting information detected by pressure, vibration and acoustic emission sensors in order to develop fault diagnostic cl...

The Scalable Processor-Independent Design for Electromagnetic Resilience (SPIDER) is a new family of fault-tolerant architectures under development at NASA Langley Research Center (LaRC). The SPIDER is a general-purpose computational platform suitable for use in ultrareliable embedded control applications. The design scales from a small configuration supporting a single aircraft function to a l...

A Built-In Self-Test (BIST) approach is presented for the Internal Configuration Access Port (ICAP) and Frame Error Correcting Code (ECC) logic cores embedded in Xilinx Virtex-4 and Virtex-5 Field Programmable Gate Arrays (FPGAs). The Frame ECC logic facilitates the detection of Single Event Upsets (SEUs) in the FPGA configuration memory. The ICAP provides read and write access to the configura...

HC-128 is a high speed stream cipher with a 128-bit secret key and a 128-bit initialization vector. It has passed all the three stages of the ECRYPT stream cipher project and is a member of the eSTREAM software portfolio. In this paper, we present a differential fault analysis attack on HC-128. The fault model in which we analyze the cipher is the one in which the attacker is able to fault a ra...

Smart fault current controller (SFCC) proposed in our previous work consists of a power converter, a high temperature superconducting (HTS) DC reactor, thyristors, and a control unit [1]. SFCC can limit and control the current by adjusting firing angles of thyristors when a fault occurs. SFCC has complex structure because the HTS DC reactor generates the loss under AC. To use the DC reactor und...

The decomposition of complex systems into manageable parts is an essential principle when dealing with complex technical systems. However, many safety and reliability modelling techniques do not support hierarchical decomposition in the desired way. Fault Tree Analysis (FTA) offers decomposition into modules, a breakdown with regard to the hierarchy of failure influences rather than to the syst...

This paper presents an algorithm based on a combination of Discrete Wavelet Transforms and neural networks for detection and classification of internal faults in a twowinding three-phase transformer. Fault conditions of the transformer are simulated using ATP/EMTP in order to obtain current signals. The training process for the neural network and fault diagnosis decision are implemented using t...

S51B-05. Tullis, T. E., and D. L. Goldsby (2003b), Laboratory experiments on fault shear resistance relevant to coseismic earthquake slip, SCEC Annual Progress Report for 2003. Vosteen, H.-D., and R. Schellschmidt (2003), Influence of temperature on thermal conductivity, thermal capacity and thermal diffusivity for different types of rock, Phys. Chem. Earth, 28, 499–509. Wibberley, C. A. J. (20...

This paper describes a model-based control system that can online determine the optimal control actions and also detect faults quickly in the controlled process and reconfigure the controller accordingly. Thus, such system can perform its function correctly even in the presence of internal faults. A fault detection modelbased (FDMB) controller consists of two main parts, the first is fault dete...

Although model-based fault tolerant control (FTC) has become prevalent in various engineering fields, its application to air-conditioning systems is limited due to the lack of controloriented models to characterize the phase change of refrigerant in the vapor compression cycle. The emergence of moving boundary method (MBM) illuminates a promising way for FTC design. In this paper, we exploit a ...