Controlled torque drive for a barrier operator

Details Controlled torque drive for a barrier operator Controlled torque drive for a barrier operator

E - Fixed Constructions

05

F

E05F 15/20 (2006.01) E05F 15/00 (2006.01) E05F 15/16 (2006.01) H02H 7/085 (2006.01)

Patent

CA 2464187

A controlled torque drive for a motor of a barrier operator including a current sensor coupled to a current conducting path that is in series with the motor. The current sensor is configured to sense the current level in the current conducting path and provide a signal indicative of the current level in the current conducting path to a current controller that restricts the current level to the motor when an obstruction is encountered by the i movable barrier. The current controller continues to restrict current to the motor for a period of time while the motor attempts to move the movable barrier through an obstruction. In variations, the current to the motor is limited by an analog current controller, and in other variations, current is limited by a digital current controller.

Il s'agit d'une commande de couple contrôlé pour un moteur d'actionneur de barrière, qui comprend un capteur de courant accouplé à un trajet conducteur en série avec le moteur. Le capteur de courant est configuré pour capter l'intensité dans le trajet conducteur et fournir un signal indiquant l'intensité dans le trajet conducteur appliqué à un contrôleur de courant qui limite l'intensité du courant appliqué au moteur, advenant un obstacle rencontré par la barrière mobile. Le contrôleur de courant continue à limiter le courant appliqué au moteur pendant un certain temps, tandis que le moteur tente de mouvoir la barrière mobile à travers un obstacle. Dans certaines variantes, le courant appliqué au moteur est limité par un contrôleur de courant analogique, et dans d'autres variantes, le courant est limité par un contrôleur de courant numérique.

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