Device for safely operating a flight control actuator of an...

G - Physics – 06 – F

Patent

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Details

G06F 11/00 (2006.01) G05B 9/03 (2006.01) G06F 11/16 (2006.01) G05D 1/00 (2006.01) H02P 7/00 (2006.01) H02P 7/29 (2006.01)

Patent

CA 2633076

The field of the invention is that of safety devices for operating the actuators of aircraft and more specifically the flight control actuators of a helicopter. The invention consists of a safety operating device for controlling an actuator movement (15) comprising at least two independent calculation chains (120), (130), a circuit for mixing instructions (65) and a power stage (88), each calculation chain delivering a direction of movement instruction and a rate of movement instruction for the actuator, the instructions being transmitted to the circuit for mixing instructions (65) so as to formulate an actuator movement primary command comprising modulated pulse trains, the power stage receiving the primary movement command and delivering a movement power command to the actuator (15). According to the invention, the circuit for mixing instructions (65) compares the direction of movement instructions and the rate of movement instructions pairwise so as to formulate the primary command for moving the actuator.

Le domaine de l'invention est celui des dispositifs de contrôle sécurisés d'actionneurs pour aéronefs et plus spécifiquement des actionneurs de commande de vol d'hélicoptère. L'invention consiste en un dispositif de contrôle sécurisé pour commander un mouvement d'actionneur (15) comportant au moins deux chaînes de calcul indépendantes (120), (130), un circuit de mixage des consignes (65) et un étage de puissance (88), chaque chaînes de calcul délivrant une consigne de sens de mouvement et une consigne de vitesse de mouvement de l'actionneur, les consignes étant transmises au circuit de mixage des consignes (65) pour élaborer une commande primaire de mouvement d'actionneur comportant des trains d'impulsions modulées, l'étage de puissance recevant la commande primaire de mouvement et délivrant une commande de puissance de mouvement à l'actionneur (15). Selon l'invention, le circuit de mixage des consignes (65) compare les consignes de sens de mouvement et les consignes de vitesse de mouvement deux à deux pour élaborer la commande primaire de mouvement de l'actionneur.

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