Method and apparatus for controlling antenna and tracking...

H - Electricity – 01 – Q

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H01Q 3/16 (2006.01) H01Q 1/32 (2006.01) H01Q 3/04 (2006.01) H01Q 3/06 (2006.01)

Patent

CA 2183942

A method and apparatus for controlling an antenna and a tracking antenna system using them. A rate sensor detects the angular rate of the vehicle turning. On the basis of the detected value, an error correction circuit determines the steering angle of the antenna. If it is judged from the determined angle that the vehicle is not turning or only slightly turning, a motor driving circuit suspends driving of a motor and at the same time a linear actuator locks a major gear. If it is judged that an accumulated error of a control target which is determined on the basis of the output of the rate sensor is not negligible, the error correction circuit starts a closed-loop control on the basis of a receiving signal level. In such a manner, the power consumption in the motor can be reduced.

Méthode et dispositif d'orientation d'antenne et système d'antenne de poursuite utilisant ce dispositif. Un capteur de vitesse angulaire détecte la vitesse angulaire d'un véhicule effectuant un virage. Un circuit correcteur d'erreurs détermine l'angle de pointage de l'antenne à partir du signal de vitesse angulaire. Si, à partir de l'angle mesuré, le système détermine que le véhicule n'est pas en virage ou effectue seulement un léger virage, un circuit de commande de moteur cesse d'actionner le moteur et, simultanément, un actionneur linéaire verrouille un engrenage principal. Si le système juge que l'erreur accumulée d'une cible de contrôle, déterminée d'après le signal de sortie du capteur de vitesse angulaire, n'est pas négligeable, le circuit correcteur d'erreurs amorce un processus de commande asservi basé sur le niveau de réception d'un signal. La puissance consommée par le moteur peut ainsi être réduite.

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