In this paper, the problem of fault diagnosis of a wind farm is addressed using interval parity equations. Fault detection is based on the use of parity equations and unknown but bounded description of the noise and modeling errors. The fault detection test is based on checking the consistency between the measurements and the model by finding if the formers are inside the interval prediction bo...

The quality of information delivered by a sensor network depends heavily on the integrity of data produced by the sensor nodes themselves. As such, the ability to model a sensor networking application scenario in the presence of faults that affect sensor data integrity is quite crucial. In this paper we describe a sensor network simulation framework that provides high fidelity modeling of senso...

In this paper we address the development, testing, and evaluation schemes for software reliability, and the integration of these schemes into a unified and consistent paradigm. Specifically, techniques and tools for the three phases of software reliability engineering will be described. The three phases are (1) modeling and analysis, (2) design and implementation, and (3) testing and measuremen...

In this paper, the robust fault detection filter design problem for linear time invariant (LTI) systems with unknown inputs and modeling uncertainties is studied. The basic idea of our study is to formulate the robust fault detection filter design as a H∞ model-matching problem. A solution of the optimal problem is then presented via a linear matrix inequality (LMI) formulation. The main result...

Software maintenance is extremely important activity in software development life cycle. It involves a lot of human efforts, cost and time. Software maintenance may be further subdivided into different activities such as fault prediction, fault detection, fault prevention, fault correction etc. This topic has gained substantial attention due to sophisticated and complex applications, commercial...

Fault tolerance – an ability of a system to cope with errors – is an important characteristic of safety-critical systems. However, the current approaches to software development often ignore the fault tolerance aspect. This results in an ad-hoc and often incorrect introduction of the fault tolerance mechanisms into system design. In this paper, we summarize the experience gained in the formal d...

Extreme scaling for purposes of achieving higher density and lower energy continues to increase the probability memory faults. For domain wall (DW) memories, misalignment faults arise when aligning domains with access points. A previously understudied type shifting fault, a pinning fault may occur due non-uniform potential distribution caused by notches fabrication imperfections. This non-unifo...

Advanced fault detection and accommodation schemes are required for ensuring efficient and reliable operation of modern wind turbines. This paper presents a novel approach in designing a fault detection and diagnosis (FDD) and fault-tolerant control (FTC) scheme for a wind turbine using fuzzy modeling, identification and control techniques. First, an improved gain-scheduled proportional-integra...

The stuck-at fault model has existed for nearly 40 years [1]. In that time, it has been applied to a large number of interesting and challenging problems in the test area, including IC and board level fault modeling, test generation, failure isolation, and fault diagnosis. Back in the days of bipolar technologies, there often existed an isomorphism between instances of stuck-at faults and actua...