In this paper we present a few fundamental results related to the problems of characterization and detection of intermittent faults in digital circuits, which, up to now, have been almost totally ignored. This problem is important since in many technologies intermittency is a predominant mode of failure. We first discuss various new classes of fault modes. We then introduce a Markov model for a...

Abstract. This paper presents a fault detection and isolation algorithm applied to the monitoring of DC Motor parameters. Fault Detection and Isolation (FDI) schemes are implemented as real-time algorithms whose inputs are plant output observations. They are basically used for a) fault detection: to decide whether the plant is in a normal operating condition or in a faulty one and b) fault isol...

In this note, a fault-tolerant control strategy is proposed from a robust control perspective by applying the recently introduced GIMC (Generalized Internal Mode Control) architecture. This fault-tolerant control design consists of two parts: a nominal performance controller and a robustness controller, and works in such way that when a sensor failure is detected, the controller structure is re...

Analysis of the failure of cell signaling networks is an important topic in systems biology and has applications in target discovery and drug development. In this paper, some advanced methods for fault diagnosis in signaling networks are developed and then applied to a caspase network and an SHP2 network. The goal is to understand how, and to what extent, the dysfunction of molecules in a netwo...

In rotating machinery one of the critical components that is prone to premature failure is the rolling bearing. Consequently, early warning of an imminent bearing failure is much critical to the safety and reliability of any high speed rotating machines. This study is concerned with the application of Recurrence Quantification Analysis (RQA) in fault detection of rolling element bearings in rot...

This paper presents an innovative application of IEEE 1149.4 and the Integrated Diagnostic Reconfiguration (IDR) method to an Automotive Electronic Control Unit implemented as a fully-integrated mixed-signal system. The IEEE1149.4 test structure has been embedded and used on-line for interconnect monitoring and signal analysis; this provides higher resolution failure diagnostics enabling locali...

An analysis of the failure statistics of a commercially available fault-tolerant system shows that administration and software are the major contributors to failure. Various approaches to software fault-tolerance are then discussed -notably process-pairs, transactions and reliable storage. It is pointed out that faults in production software are often soft (transient) and that a transaction mec...

We conducted permeability measurements of basalt sampled from an exhumed ancient fault zone in the Cretaceous Shimanto accretionary complex in Japan, in order to investigate permeability structure and evolution following shear failure. Permeability showed a strong reduction with increase in the e#ective confining pressure and temperature. Rapid sealing at elevated temperatures was observed duri...

This paper presents a fault detection and isolation (FDI) filter design to linearized longitudinal dynamics of a Boeing 747 series 100/200. The FDI filter design based on fundamental problem of residual generation (FPRG). In our case the fault detection filter is sensitive to elevator and stabilizer fault. The three type of actuator failures considered in this paper are lock failure, loss in ef...

Cloud computing becomes very popular these days and fault tolerance is a major issue in this cloud environment. This paper is dedicated to study different kinds of faults and various techniques for handling them. This survey mainly focuses on why fault tolerance is required in cloud computing and which techniques are used to handle these failures so that services can be delivered without delay ...