The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 25, 2014
Filed:
Jan. 29, 2010
Steven D. Jacob, Oro Valley, AZ (US);
Fares Najjar, Arlington, TX (US);
Gerald W. Meyer, Tucson, AZ (US);
Richard D. Ross, Sahuarita, AZ (US);
Steven D. Jacob, Oro Valley, AZ (US);
Fares Najjar, Arlington, TX (US);
Gerald W. Meyer, Tucson, AZ (US);
Richard D. Ross, Sahuarita, AZ (US);
Raytheon Company, Waltham, MA (US);
Abstract
A method of solenoid valve control includes measuring voltage across the solenoid valve and current through the solenoid valve, and using the results to aid in controlling the solenoid valve. For instance, one or both of the measured values may be used to determine when actual engagement of the solenoid valve occurs. An initial lower voltage and lower current can be used, and then as conditions change, the changes in condition can be accounted for by increasing voltage and current to maintain the desired response time of the solenoid valve. By measuring and controlling voltage and current less of a margin can be used, both in setting voltage/current levels and in selecting the time over which a pull voltage/current is utilized. This reduces the wasted energy in the system, as well as reducing the temperature rise in the solenoid valve.