Control method and controller for a solenoid-operated...

Valves and valve actuation – Electrically actuated valve – Having means to produce proportional flow

Reexamination Certificate

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C251S129010

Reexamination Certificate

active

10710496

ABSTRACT:
A method and system for controlling a solenoid-operated pressure regulator valve to achieve high compliance with respect to a commanded current in accordance with a precalibrated transfer function. A dither frequency imposed on applied current is changed at precalibrated regulated pressure values to avoid dynamic instability.

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patent: 2003/0230266 (2003-12-01), Ekdahl et al.
patent: 2004/0003788 (2004-01-01), Taylor et al.
patent: 403213763 (1991-09-01), None
patent: 404248059 (1992-09-01), None

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