Reduced-energy-consumption actuator

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

2005-10-18

2005-10-18

Keasel, Eric (Department: 3754)

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

C004S304000

Reexamination Certificate

active

06955334

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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