Reduced-energy-consumption actuator

Details Reduced-energy-consumption actuator Reduced-energy-consumption actuator

H - Electricity

01

F

H01F 7/08 (2006.01) F16K 31/06 (2006.01) F16K 31/08 (2006.01) H01F 7/124 (2006.01) H01F 7/18 (2006.01)

Patent

CA 2386992

A latching-valve system (10) includes a piezoelectric transducer (44) mounted on its housing (16). To change the valve's state, a microcontroller (54) causes a valve driver (58) to drive current through the actuator's coil (12). It continues driving current through the coil (12) until the transducer's output reaches a magnitude characteristic of the disturbance that typically results when the actuator's armature (22) reaches the end of its travel. At that point, the microcontroller (54) stops driving current through the coil. If the characteristic sound does not occur within a predetermined duration, the microcontroller (54) causes a voltage-multiplier circuit (Q1, L1, D1) to increase the voltage that the valve driver (58) applies to the coil.

L'invention concerne un système de vanne à verrouillage (10) comportant un transducteur piézo-électrique (44) monté sur son boîtier (16). Pour changer l'état de la vanne, un micro-contrôleur (54) actionne une commande de vanne (58) pour que celle-ci alimente la bobine de l'actionneur (12) en courant. La commande de vanne continue à alimenter la bobine (12) en courant jusqu'à ce que la sortie du transducteur atteigne une valeur caractéristique de la perturbation résultant généralement lorsque l'induit de l'actionneur (22) arrive en fin de course. A ce niveau, le micro-contrôleur (54) cesse d'alimenter la bobine en courant. Si la tonalité caractéristique n'est pas produite au cours d'une période donnée, le micro-contrôleur (54) actionne un circuit multiplicateur de tension (Q1, L1, D1) pour que celui-ci augmente la tension que la commande de vanne (58) délivre à la bobine.

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