Methods and systems for calibration of a motor
US9966885B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2017 |
| Grant date | May 8, 2018 |
| Priority date | — |
| Expiry date | Jun 14, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method for calibrating a motor, the motor comprising a permanent magnet synchronous motor, is provided. The method generates a rotating magnetic field using a voltage vector, the rotating magnetic field configured to rotate at a constant angular velocity independent of an actual rotor position, and the rotating magnetic field rotating in a first direction; identifies, by a processor, timing data associated with a plurality of digital Hall effect sensors; computes, by the processor, accurate positions for each of the plurality of digital Hall effect sensors, using the timing data and the constant angular velocity; creates a reference table in system memory, by the processor, the reference table comprising the accurate positions; and during operation of the motor, calculates accurate angular velocity values for the motor, using the reference table.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.