Sensorless propeller damage detection systems and methods
US12397908B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 13, 2023 |
| Grant date | Aug 26, 2025 |
| Priority date | — |
| Expiry date | Dec 2, 2043 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/007
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Sensorless propeller damage detection systems and methods may receive and process motor quadrature-axis currents to extract current ripples and fast average current values. In addition, the current ripples and fast average current values may be further processed to generated normalized rms (root-mean-square) values of the current ripples. Further, the calculated values may be compared to one or more threshold values over a time duration to determine whether a propeller is damaged. In this manner, the sensorless propeller damage detection systems and methods may quickly, reliably, and accurately detect propeller damage without any additional sensors or dedicated hardware and with low computational cost, while also minimizing false positive determinations of propeller damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.