Adaptive resolver envelope diagnostic
US11802913B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2021 |
| Grant date | Oct 31, 2023 |
| Priority date | — |
| Expiry date | Dec 1, 2041 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R25/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A diagnostic system for a resolve of a motor and a method of diagnosing the resolver. The diagnostic system includes an x-phase winding, a y-phase winding, and a processor. The x-phase winding generates an x-phase voltage and the y-phase winding generates a y-phase voltage. The processor obtains the x-phase voltage and the y-phase voltage, determines an adaptive cosine envelope from the x-phase voltage and an adaptive sine envelope from the y-phase voltage, determines an adaptive magnitude from the adaptive sine envelope and the adaptive cosine envelope, determines a magnitude average based on the adaptive magnitude, determines a fault of the resolver when a ratio of the adaptive magnitude and the magnitude average is greater than a threshold, and transmits a signal based on the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.