System and method for vibration control in a rotorcraft using an adaptive reference model algorithm
US9027873B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2010 |
| Grant date | May 12, 2015 |
| Priority date | — |
| Expiry date | Mar 18, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K2210/3056
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
The adaptive reference model algorithm uses a gain scheduling feature combined with a customized Least-Squares routine as an adaptive method for adjusting feedback control so as to account for variations in Transfer Function (G), thereby optimizing the effectiveness of the Active Vibration Control (AVC) System. The Least-Squares routine identifies the transfer function in a background process without interruption of closed loop vibration control. This identification approach is accomplished without intentional interrogation of the AVC actuators and without intentional vibration level changes. For this adaptive control logic, the dynamic relationship between AVC actuators and AVC sensors is represented by a mathematical model of Transfer Function (G). The mathematical model of Transfer Function (G) is continuously updated by the Least-Squares routine. A feedback gain (H) is computed from the mathematical model of Transfer Function (G), and the feedback gain (H) is updated each time the mathematical model of Transfer Function (G) is updated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.