Reduced-energy-consumption latching actuator
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 ( 1...
Gespeichert in:
| Hauptverfasser: | , |
|---|---|
| Format: | Patent |
| Sprache: | eng |
| Online-Zugang: | Volltext bestellen |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| Zusammenfassung: | 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 (Q
1,
L
1,
D
1
) to increase the voltage that the valve driver (
58
) applies to the coil. |
|---|