Multisensor data fusion and belief functions for robust singularity detection in signals
This paper addresses the problem of robust detection of signal singularity in hostile environments using multisensor data fusion. Measurement uncertainty is usually treated in a probabilistic way, assuming lack of knowledge is totally due to random effects. However, this approach fails when other effects, such as sensor failure, are involved. In order to improve the robustness of singularity detection, an evidence theory based approach is proposed for both modeling (data alignment) and merging (data fusion) information coming from multiple redundant sensors. Whereas the fusion step is done classically, the proposed method for data alignment has been designed to improve singularity detection performances in multisensor cases. Several case studies have been designed to suit real life situations. Results provided by both probabilistic and evidential approaches are compared. Evidential methods show better behavior facing sensors dysfunction and the proposed method takes fully advantage of component redundancy.
Showing items related by title, author, creator and subject.
LE MOAL, G; RABATE, P; MORARU, George; VERON, Philippe; DOUILLY, M (IK4, 2012)Acoustic Emission (AE) is considered an efficient tool for monitoring of machining operations, for both tool condition and working piece integrity. However, the use of AE is more challenging in case of drilling, due to ...
LE MOAL, G; MORARU, George; VERON, Philippe; RABATE, P; DOUILLY, M (Proceedings of the 2nd International Conference on Communications, Computing and Control Applications (CCCA), 2012)Emergence of automated and flexible production means leads to the need of robust monitoring systems. Such systems are aimed at the estimation of the production process state by deriving it as a function of critical ...
MORARU, George; VERON, Philippe; RABATE, Patrice (OMPI (Organisation Mondiale de la Propriété Intellectuelle), 2010)The invention relates to a drilling head with an axial oscillation generator, based on the use of piezoelectric ceramic actuators.
PERNOT, Jean-Philippe; MORARU, George; VERON, Philippe (Taylor & Francis, 2007)The Reverse Engineering process consists of a succession of operations that aim at creating a digital representation of a physical model. The reconstructed geometric model is often a triangle mesh built from a point cloud ...
PERNOT, Jean-Philippe; MORARU, George; VERON, Philippe (Elsevier, 2006)The presence of holes in a triangle mesh is classically ascribed to the de ciencies of the point cloud acquired from a physical object to be reverse engineered. This lack of information results from both the scanning process ...