Motor position calibration
US11316460B2 · kind B2 · utility
0Cited by
3References
17Claims
0Family size
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Key dates
| Filing date | Nov 20, 2020 |
| Grant date | Apr 26, 2022 |
| Priority date | — |
| Expiry date | Nov 20, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D5/0481
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of determining an electrical angle offset of a motor position sensor mounted to a multi-phase electric motor, the method comprising rotating a rotor of the multi-phase electric motor at a motor velocity using an external drive system, measuring a motor phase voltage of each phase of the multi-phase electric motor, the motor phase voltage comprising a back-EMF generated by the rotation of the motor, converting the motor phase voltage to a DQ reference frame to form a DQ motor phase voltage and calculating the electrical angle offset from the DQ motor phase voltages.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.