Method for monitoring an electromagnetic actuator type apparatus
US10955478B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Feb 21, 2018 |
| Grant date | Mar 23, 2021 |
| Priority date | — |
| Expiry date | Feb 21, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/008
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A monitoring method for monitoring equipment of electromechanical actuator type, the equipment including a three-phase electric motor, the monitoring method comprising the following steps: measuring three-phase currents powering the three-phase electric motor; projecting the three-phase currents into a Park reference frame; performing an ensemblist empirical mode decomposition processor the quadrature current coupled with a blind source separation process in order to obtain source components; from among the source components, automatically selecting a first set of source components sensitive to a first defect, and a second set of source components sensitive to a second defect; constructing a first virtual defect signal and a second virtual defect signal; and extracting a first set of signatures representative of the first defect from the first virtual defect signal, and extracting a second set of signatures representative of the second defect from the second virtual defect signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.