We investigate the spatial pattern of surface creep and off-fault deformation along the southern segment of the San Andreas Fault using a combination of multiple interferometric synthetic aperture radar viewing geometries and survey-mode GPS occupations of a dense array crossing the fault. Radar observations from Envisat during the period 2003–2010 were used to separate the pattern of horizonta...

Abstract For the single-phase ground fault, which has highest probability of occurrence in a 10 kV distribution network, ant colony algorithm is combined with neural network for fault line selection, and optimized. The study builds model MATLAB simulates neutral fault. It compares results optimized selection algorithm, traditional proves that accuracy method identifying faulty lines significant...

This paper presents a Boolean discrete event model based approach for Fault Detection and Isolation (FDI) of manufacturing systems. This approach considers a system as a set of independent components composed of discrete actuators and their associated discrete sensors. Each component model is only aware of its local desired fault free behavior. The occurrence of a fault entailing the violation ...

Fault diagnosis of composite asynchronous sequential machines with parallel composition is addressed in this paper. An adversarial input can infiltrate one of two submachines comprising the composite asynchronous machine, causing an unauthorized state transition. The objective is to characterize the condition under which the controller can diagnose any fault occurrence. Two control configuratio...

In this paper, a robust fault-tolerant control strategy for constrained multisensor linear systems, subject to sensor faults and in the presence of bounded state and output disturbances, is proposed. The scheme verifies that, for each sensors–estimator combination, suitable residual variables lie inside pre-computed sets and selects a more appropriate combination based on a chosen criterion. An...

To gain a thorough understanding of the fault mechanisms in SLS machines, we decompose SLS proole signals into independent features using a novel tool called Karhunen-Lo eve (KL) transform. These individual features can then be studied separately to monitor the occurrence of fault patterns on manufactured parts and determine their nature. Analytical signals with known fault patterns, simulating...

This paper presents a Boolean discrete event model-based approach for Fault Detection and Isolation of manufacturing systems. This approach considers a system as a set of components composed of discrete actuators and their associated discrete sensors. Each component model is only aware of its local desired, fault-free, behavior. The occurrence of any fault entailing the violation of the desired...

This paper proposes a methodology for the development of simple arithmetic self­ checking circuits using Signed Digit representation. In particular, the architecture of an adder is reported and its selfchecking capability with respect to the stuck-at fault set is shown. The main idea underlying the paper is to exploit the properties of Signed Digit representation allowing carry-free operations....

This paper presents a Boolean discrete event model based approach for Fault Detection and Isolation (FDI) of manufacturing systems. This approach considers a system as a set of independent components composed of discrete actuators and their associated discrete sensors. Each component model is only aware of its local desired fault free behavior. The occurrence of a fault entailing the violation ...