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:
Aug. 20, 2019
Filed:
Oct. 06, 2015
Fisher Controls International Llc, Marshalltown, IA (US);
Kenneth W. Junk, Marshalltown, IA (US);
Michel K. Lovell, Marshalltown, IA (US);
Jimmie L. Snowbarger, Marshalltown, IA (US);
Jeffrey D. Seyller, Colo, IA (US);
FISHER CONTROLS INTERNATIONAL LLC, Marshalltown, IA (US);
Abstract
The present invention includes a method, apparatus, and computer readable medium for controlling a valve. Example embodiments of the present invention described herein utilize a soft cutoff threshold and soft cutoff procedure at which point the controller monotonically ramps a servo set-point to slowly overdrive the servo beyond a calibrated set-point range, wherein the servo transitions into a hard cutoff when the servo set-point reaches a predefined overdrive threshold.