Apparatus and method for operating an oscillation blade device and a system comprising the apparatus
US10808729B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2016 |
| Grant date | Oct 20, 2020 |
| Priority date | — |
| Expiry date | Jun 26, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF05D2260/407
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A power source is configured to apply a first alternating electric excitation signal to an oscillation blade device at a first excitation frequency causing a blade of the oscillation blade device to oscillate at a first oscillation frequency. A current detector is configured to measure amplitude values of the current supplied by the power source to the oscillation blade device. A processor is configured to assess a plurality of successive peak values of the measured amplitudes, determine a second oscillation frequency for the blade if variation in the successive peak values is detected and send a command to the power source to apply a second alternating electric excitation signal to the oscillation blade device at a second excitation frequency which matches the determined second oscillation frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.