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:
Nov. 28, 2006
Filed:
Aug. 03, 2004
William Guy Alexander, Waterloo, IA (US);
Thomas Eugene Boe, Cedar Falls, IA (US);
Derek Malcolm Eagles, Cedar Falls, IA (US);
Jianming Yu, Cedar Rapids, IA (US);
William Guy Alexander, Waterloo, IA (US);
Thomas Eugene Boe, Cedar Falls, IA (US);
Derek Malcolm Eagles, Cedar Falls, IA (US);
Jianming Yu, Cedar Rapids, IA (US);
Deere & Company, Moline, IL (US);
Abstract
A method is provided for automatically determining a hitch raise rate calibration value for a hitch control system having a hydraulic actuator for moving the hitch, a valve for controlling flow of hydraulic fluid to the actuator and an electronic hitch control unit. The method includes applying a first control signal to the valve to cause the hitch to raise, determining a first hitch velocity as the hitch moves in response to the first control signal, and repeating these steps for a second control signal. The raise rate calibration value is then calculated as a function of a desired raise velocity, the first and second control signals and the first and second velocities.