Reducing vibration using QR decomposition and unconstrained optimization
US6567757B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2001 |
| Grant date | May 20, 2003 |
| Priority date | — |
| Expiry date | May 29, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/008
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Determining adjustments to decrease vibrations caused by rotating blades includes receiving a plurality of vibration values corresponding to vibrations caused by the blades, providing coefficient of vibration data that corresponds to effects on vibration caused by adjustments to the blades, where the adjustments include at least two different types of adjustments having different units of measure, applying the coefficient of vibration data to the vibration values, and solving for possible values for the adjustments that may be applied to the blades, where the possible values for the adjustments results in the vibrations being less than a predetermined value and where the different types of adjustments are normalized according to a maximum amount of adjustment for each type of adjustment. The predetermined value may correspond to an expected value of all errors. The predetermined value may be increased in order to decrease the values for the adjustments that may be applied to the blades. The adjustments may include at least one of hub weights, blade tabs, PCR adjustments, and blade tip weight adjustments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.