Fault detection is essential for the survivability of many systems. Since many systems present highly nonlinear dynamics, the applicability of general fault detection techniques designed mainly for linear systems is very questionable. In this communication, after introducing the concept of difference flat nonlinear systems, a fault detection scheme based on difference flatness and fuzzy decisio...

A flexible, model based fault detection and isolation (FDI) system for an arbitrary configuration of a water tank world has been designed and implemented in MATLAB, SIMULINK and dSPACE. The fault detection is performed with local change detection algorithms, and the fault isolation is performed with residual patterns automatically generated from the total configuration.

In this paper, a fault detection and accommodation scheme is designed, which is applicable to a large class of nonlinear systems. The nonlinear observer is designed to enable the detection of fault occurrences through comparison of observed states with their signatures. Under such circumstances, when a component fails, the fault accommodation control will be activated to compensate the effects ...

Arc fault is the arc that may cause damage to the society. Arc is with high temperature and massive heat. If arc fault appears in the low voltage supply environment, it will lead to fire or disaster. So detection and protection of arc fault is essential. In order to prevent the damage of fault arc, a new apparatus named Arc Fault Circuit Interrupter (AFCI) has been proposed. In the paper, arc f...

A b s t r a c t This letter discusses simple techniques for the implementation of fault detection in Residue Number System (RNS) arithmetic modules used in systolic arrays. The technique centres around a recently introduced linear systolic structure[1], and does not require a redundant residue system[2] for the detection process. It is shown that this structure can be used as the detection proc...

In software testing, fault detection and removal process is one of the key elements for quality assurance of the software. In the last three decades, several software reliability growth models were developed for detection and correction of faults. These models were developed under strictly static assumptions. The main goal of this article is to investigate an optimal resource allocation plan fo...

This paper considers the problem of fault detection and isolation while using zero or almost zero threshold. A number of different fault detection and isolation problems using exact or almost exact disturbance decoupling are formulated. Solvability conditions are given for the formulated design problems. The &step delayed fault detection problem is also considered for discrete-time systems.