Airbus Operations (s.a.s.)

Jean-Christophe Bry

Claude Leonetti

Stéphane Caro

Janick Migne

Jean-Marc Breton

Gregoire Pebernad De Langautier

Laurent Serrano

Benjamin Rivalland

A method for parameterizing a photogrammetric cable robot, having a frame, a mobile platform carrying a camera and cables, each cable extending from a mobile platform attachment point to a position-adjustable exit point, while remaining linked to the frame. The robot's maximum workspace is defined by the ranges of possible positions of the different cable exit points. A set of pairs of setpoint positions and orientations of the platform is determined, for performing the point measurements of a scene by photogrammetry. Then, a genetic algorithm comprising crossing, transformation and selection operations is applied to a population of vectors, each representing respective positions of cable exit points, the selection being made via a fitness function involving a first objective function evaluating a collision percentage and a second objective function evaluating a percentage violation of a mobile platform constraint of equilibrium, when the platform assumes the different setpoint positions and orientations.

Photogrammetric cable robot

A device for adjusting the position of structural elements of a structure of an aircraft, comprising a measurement tool for determining a value for the actual position of each structural element, a processing and calculation system for comparing each value of the actual position determined by the analysis system with a corresponding theoretical value, and for determining therefrom an adjustment value, an adjustment tool configured to be attached in use to a structural element, comprising at least one measurement sensor configured to measure a distance between the measurement sensor and the structural element, a calculator for comparing the value measured by the measurement sensor with the corresponding adjustment value, and for deriving therefrom corrective actions to finalize adjustment of the structural element, and a communication system for exchanging information between the adjustment tool and the processing and calculation system.

Method for adjusting the position of elements of a structure of an aircraft, and device for implementing same

A method for measuring the position of a mobile structure in a set of reference axes, the structure comprising a plurality of intrinsic recurrent structural elements, comprising the following steps undertaken by a processor. Acquiring simultaneous images of the structure from a plurality of optical devices, each recurrent element being in a field of view of at least three separate optical devices. Extracting the recurrent elements from each image and determining their position in the image. Computing at least one indicator for each recurrent element detected in each image. Identifying each recurrent element by associating a unique identifier with each element, the identifier being related to the position of each optical device in the set of reference axes, and to at least one indicator associated with each element in each image. Determining the position, by implementing a photogrammetric algorithm, of each recurrent element in the set of reference axes.

Method for measuring the position of a mobile structure

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Campbon, France

Jean-Christophe Bry