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. 13, 2013
Filed:
Apr. 13, 2009
Duqiang Wu, Eden Prairie, MN (US);
G. Clark Fortune, Farmington Hills, MI (US);
Aaron H. Jagoda, St. Louis Park, MN (US);
John Ryan Kess, Bloomington, MN (US);
Thomas J. Stoltz, Allen Park, MI (US);
Paul Brenner, Chaska, MN (US);
Benjamin Morris, Ann Arbor, MI (US);
Duqiang Wu, Eden Prairie, MN (US);
G. Clark Fortune, Farmington Hills, MI (US);
Aaron H. Jagoda, St. Louis Park, MN (US);
John Ryan Kess, Bloomington, MN (US);
Thomas J. Stoltz, Allen Park, MI (US);
Paul Brenner, Chaska, MN (US);
Benjamin Morris, Ann Arbor, MI (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
An exemplary hydraulic system includes a digital valve operable to fluidly connect a hydraulic load to a pressure supply, and an orifice disposed in a flow path between the hydraulic load and the digital valve. A digital controller is operably connected to the digital valve. The digital controller stores a target pressure drop across the orifice and is configured to determine an actual pressure drop across the orifice and formulate a control signal based on the target pressure drop and the actual pressure drop. The controller transmits the control signal to the digital valve for controlling the operation of the valve.