Reduced-energy-consumption actuator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 23, 2001
Grant Date -
N/A
app pub date -
Feb 29, 2000
filing date -
Feb 29, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A 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) at a relatively high level. It continues driving current through the coil (12) at the high level 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) reduces coil drive.
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