Motor angle detection and diagnosis apparatus, motor controller, electric vehicle, and method
US12124242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2022 |
| Grant date | Oct 22, 2024 |
| Priority date | — |
| Expiry date | Apr 22, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/41329
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor angle detection and diagnosis apparatus is connected to a drive motor using a resolver. The resolver is configured to output a resolver feedback signal of an electrical angle of the drive motor. An angle sampling and diagnosis system in the motor angle detection and diagnosis apparatus performs two-channel simultaneous sampling on a resolver feedback signal, obtained after adjustment by the resolver feedback processing circuit, separately calculates a first electrical angle and a second electrical angle; diagnoses data obtained after the two-channel sampling of the first electrical angle and the second electrical angle in real time, diagnoses hardware circuits, and controls the motor controller to enter a safe state when a diagnosis result is abnormal. In this solution, sampling is performed by using two sampling channels, so that angle decoding of at least an ASIL C can be implemented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.