Mean pressure estimation for compressible fluid strut
US6935639B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2004 |
| Grant date | Aug 30, 2005 |
| Priority date | — |
| Expiry date | Feb 18, 2024 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2500/205
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A method and apparatus is provided for estimating the mean pressure in a compressible fluid strut. A database is employed containing values for mean pressure variation corresponding to a specific combination of motor speed and flow demand, and may also account for strut temperature. The flow demand and the speed of the motor are determined, and the mean variation corresponding to the determined combination of motor speed and flow demand is selected. The estimation of strut mean pressure is updated with the selected mean pressure variation. In this way, costly pressure sensors are eliminated as well as the complicated control algorithms which are used therewith.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.