Hitch raise rate calibration method
US7142968B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 3, 2004 |
| Grant date | Nov 28, 2006 |
| Priority date | — |
| Expiry date | Jun 22, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B63/1117
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.