Fuzzy logic based fuel flow selection system
US6289274A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1999 |
| Grant date | Sep 11, 2001 |
| Priority date | — |
| Expiry date | Aug 13, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1404
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuzzy logic based fuel flow selection (control) system is presented. Control loops are used to provide desired engine fuel flow control. These loops receive engine operating parameters and provide fuel flow command values in accordance with corresponding transfer functions. These command values are presented to selection logic, which provides a command value based on outputs of the control loops. The command value integrated by a common integrator to provide and integrated command value which is the fuel flow command that is presented to a fuel metering unit at the engine. Each loop has a level of authority assigned to it, which is computed in terms of fuzzy rules and membership functions. Thus at any given moment, more than one loop may be in control to differing levels of authority, whereby the present invention provides a smoother transition between loops competing for control with an attendant increase in system performance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.