In this paper, we present an unified approach for fault detection and isolation in discrete-time systems affected by noises and faults on measurement and state equations. The proposed robust fault detection filter will be designed under less restrictive conditions compared with classical fault detection filter. After having parameterized the minimum-time left inverse of the system, the degrees ...

Early fault detection in nuclear industry is studied. Tools have been developed for control room operators and experts in an industrial project. SelfOrganizing Map (SOM) method has been used in combination with other methods. Decision support visualizations are introduced. The usability of methods have been tested and verified by constructing prototype systems. The use of SOM method in dynamic ...

In this paper we examine the influence of foreign direct investment inflows on energy intensities of developing countries empirically. We first show that a simple OLS estimation, as it is found in the literature, suggests energy intensity reductions from FDI inflows, which is consistent with the hypothesis of energy saving technology transfer via FDI. However, such a regression turns out to be ...

In fault pair collapsing, certain fault pairs are eliminated from the fault list, since those fault pairs are guaranteed to be distinguished by the remaining fault pairs in the fault list. Considering a fault pair is important in the case of diagnostic fault simulation and test generation. The concept of Z-set and independent fault set are used for fault pair formation. Z-set characteristics de...

This paper is intended as a tutorial overview of induction motors signature analysis as a medium for fault detection. The purpose is to introduce in a concise manner the fundamental theory, main results, and practical applications of motor signature analysis for the detection and the localization of abnormal electrical and mechanical conditions that indicate, or may lead to, a failure of induct...

We address the problem of detecting faults modeled as changes in the eigenstructure of a linear dynamical system. This problem is of primary interest for structural vibration monitoring. The purpose of the paper is to describe and analyze new fault detection algorithms, based on recent stochastic subspace-based identiication methods and the statistical local approach to the design of detection ...

In this paper, a di erential geometric approach to solv e the problem of fault detection and isolation in nonlinear systems is presented. New conditions giving a solution for fault isolation problem are proposed. These conditions are less restrictive than previous work and are based on the analysis of the solution of the fundamental problem of residual generation given by De Persis and Isidori....

This paper presents a combined fault detection and discrimination strategy for CMOS logic incorporating active resource mitigation and monitoring. The approach is demonstrated for a NOR gate using a dual redundant gate design with selective mitigation and analogue or digital detection. The potential benefits of the approach are discussed with respect to resource awareness and management within ...