This paper presents the methodology to perform sensitivity analysis for impedance-based fault location methods, considering power distribution systems and the presence of distributed generation. The proposed methodology helps to determine the power distribution system model parameters, which significantly affect the fault locator performance. Having identified such parameters, the next step is ...

We present an autonomy architecture called Fault Tolerant Remote Agent that integrates symbolic reasoning from AI planning/scheduling with physics-based fault-tolerant control. Application to spacecraft attitude management in the presence of diverse failure classes is studied. We first review fault tolerance in AI and control-theoretic contexts and introduce an architecture in which the capabil...

Wound-Rotor (WR) resolvers are the most widely used position sensors in applications with harsh environmental conditions. However, their performance is exposed to failure due to the high risk of short circuit (SC) fault. Although the output current of the resolver is negligible, its thin copper wires increase the probability of the short circuit fault. To avoid the propagation of the turn-to-tu...

In this paper we make a case for moving the level of test pattern generation for fabrication faults to the system level. Like many other researchers we feel it is necessary to handle the growing size and complexity of testing of digital systems. As the first step in this direction, system level fault models must be defined. Unlike logic level stuck-at fault models it is hard to define general f...

Faults are the most critical tectonic factors in geological structures, which have major economic impacts on mining economics. Thus it is necessary to understand faults in order to identify the actual risks and complications associated with mining. In the preliminary investigation of the Sonda-Jherruck coalfield, 3D geological modeling was not performed. The purpose of this work was to perform ...

Building efficient systems is one of the main challenges for software developers, who have been concerned with dependability-related issues as they built and deployed. Lots of changes often needs including the nature of faults and failures and the complexity of systems. Sometimes accepting minor errors always need efforts to eliminate faults that might cause them is in the core of dependability...

Due to the important role of the boiler-turbine units in industries and electricity generation, it is important to diagnose different types of faults in different parts of boiler-turbine system. Different parts of a boiler-turbine system like the sensor or actuator or plant can be affected by various types of faults. In this paper, the effects of the occurrence of faults on the actuators are in...

COMSIM is a fault simulator for combinational circuits which can efficiently handle various gate level fault models. Stuck-at faults, function conversions, bridging faults, transition faults as well as multiple faults of all types and faults with additional fault detection conditions, can be simulated in one pass. This offers a practical approach to solve the conflict between the accuracy of fa...

Because of the nonlinear characteristics of monitoring system in military barracks, the traditional KPCA method either have low sensitivity or unable to detect the fault quickly and accurately. In order to make use of higher-order statistics to get more useful information and meet the requirements of real-time fault diagnosis and sensitivity, a new method of fault detection and diagnosis is pro...