Apparatus with gyroscopes and accelerometers for determining...

G - Physics – 01 – C

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G01C 21/16 (2006.01)

Patent

CA 2361727

The invention concerns an apparatus for determining attitudes, in particular the body angle (.theta.) and the banking (~) of an aerodyne, comprising: a gyroscopic device with related components supplying the components of the vector (.OMEGA.) of the aerodyne instantaneous rotation; means for calculating, from the gyroscopic measurements, a matrix of attitudes (b¿1?, b¿2?, b¿3?); accelerometers integrated with the gyroscopic device; and means for comparing data calculated from the gyroscopes to supply corrections to compensate the errors or drifts of the gyroscopic device. Said apparatus is characterised in that the comparison is performed between a vector U¿g? of vertical direction supplied by the gyroscopic device and a vector U¿a? of vertical direction supplied by the accelerometers.

L'invention est relative à un appareil de détermination d'attitudes, notamment l'assiette (.theta.) et l'inclinaison (~) d'un aérodyne, comportant: un dispositif gyrométrique à composants liés fournissant les composantes du vecteur (.OMEGA.) de rotation instantanée de l'aérodyne, des moyens pour calculer, à partir des mesures gyrométriques, une matrice d'attitudes (b1, b2, b3), des accéléromètres solidaires du dispositif gyrométrique, et des moyens pour comparer des données calculées à partir des accéléromètres à des données calculées à partir des gyromètres afin de fournir des corrections pour compenser les erreurs ou dérives du dispositif gyrométrique. Cet appareil est caractérisé en ce que la comparaison est effectuée entre un vecteur Ug de direction verticale fourni par le dispositif gyrométrique et un vecteur Ua de direction verticale fourni par les accéléromètres.

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