Hitch raise rate calibration method

Details Hitch raise rate calibration method Hitch raise rate calibration method

2006-11-28

2006-11-28

Nguyen, Tan Q. (Department: 3661)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

Construction or agricultural-type vehicle

C701S001000, C701S036000, C702S085000, C172S008000

Reexamination Certificate

active

07142968

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.

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Deere & Company, “Hitch Control Unit (HCU) Factory Calibration 8000 & 9000 Series Tractors (Wheeled & Tracked)”, 11 pages, Oct. 1, 2001.

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