Electrically controlled hydraulic valve calibration method and system
US7997117B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 12, 2008 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | May 19, 2030 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2211/6654
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A method of calibrating an electrically controlled hydraulic valve having a known relationship between flow rate through the valve and displacement of a valve element is disclosed. The method includes ascertaining a first current level for actuating the electrically controlled hydraulic valve to move the valve element to a position adjacent an inlet port, and a first displacement of the valve element responsive to the first current level. The method also includes ascertaining a second current level for actuating the electrically controlled hydraulic valve to move the valve element from the position adjacent the inlet port to a position permitting flow through the inlet port, and ascertaining a second displacement of the valve element responsive to the second current level. The method further includes establishing a relationship between current and displacement associated with the electrically controlled hydraulic valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.