A balance control system for a movable barrier operator

Details A balance control system for a movable barrier operator A balance control system for a movable barrier operator

E - Fixed Constructions

05

D

E05D 15/38 (2006.01) E05F 11/00 (2006.01) E05F 15/16 (2006.01) H02K 7/14 (2006.01)

Patent

CA 2480224

A balance control system comprises a motor (30), a transmission system providing connection between the motor (30) and the door (24) and adapted to move the door (24) between a closed position and an open position located above the closed position, a counterbalance system (60) to reduce power required to lift the door (24), an apparatus to generate first signal representing a force used to move the door (24) from the closed position to the open position, and to generate a second signal representing a force used to move the door (24) from the open position to the closed position, and a controller (70) responsive to the first signal and to the second signal to indicate an imbalance of the door (24) when a difference between the first signal and the second signal exceeds a predetermined threshold.

L'invention concerne un système de contrôle d'équilibre comprenant un moteur, un système de transmission assurant une liaison entre le moteur et la porte et permettant de déplacer la porte entre une position fermée et une position ouverte située au-dessus de la position fermée, un système de contrepoids permettant de réduire la quantité d'énergie requise pour lever la porte, un dispositif servant à produire un premier signal représentant une force utilisée pour déplacer la porte de la position fermée à la position ouverte, et à produire un second signal représentant une force utilisée pour déplacer la porte de la position ouverte à la position fermée, ainsi qu'un contrôleur sensible au premier signal et au second signal et indiquant un déséquilibre de la porte lorsqu'une différence entre le premier signal et le second signal dépasse un seuil prédéterminé.

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