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:
Feb. 03, 2009
Filed:
Apr. 28, 2006
Scott D. Adams, Portage, MI (US);
David E. Herbert, Rochester Hills, MI (US);
Greg E. Ford, Detroit, MI (US);
Peter M. Jacobsen, Oakland Township, MI (US);
Harold L. Bowman, Lapeer, MI (US);
Timothy J. Green, Holly, MI (US);
Scott D. Adams, Portage, MI (US);
David E. Herbert, Rochester Hills, MI (US);
Greg E. Ford, Detroit, MI (US);
Peter M. Jacobsen, Oakland Township, MI (US);
Harold L. Bowman, Lapeer, MI (US);
Timothy J. Green, Holly, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A closed loop adaptive fluid control system and method for use in hydraulic applications monitors one or more fluid characteristics, such as pressure, flow rate, accumulation time in an actuator, fill volume, etc., and compares the characteristic with a target response. A fluid characteristic sensor detects at least one fluid characteristic at a hydraulically-actuated device that is actuated by a electrically-operated. The sensor sends a device signal corresponding to the actual sensed characteristic to an electronic controller, which compares the device signal with a target response. The controller then identifies any differences between the device signal and the target response and provides a feedback signal to the electrically-operated valve to adjust the current to the valve, which in turn adjusts the electrically-operated valve so that the device signal corresponding to the sensed characteristic at the device converges toward the target response.