Method and system for estimating a rotor position with a notch filter
US10439538B2 · kind B2 · utility
0Cited by
4References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 2016 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | Jul 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2203/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor has a rotor that rotates in response to one or more alternating current input signals. A position sensor is adapted to generate a substantially saw-tooth waveform indicative of a position of the rotor. A primary processing module or data processor is capable of providing position data and speed data for the rotor based on the substantially saw-tooth waveform. A notch filter can reject one or more selected frequency components in the substantially saw-tooth waveform to reduce distortion off the substantially saw-tooth waveform that would otherwise tend to cause inaccuracy in the provided position data and speed data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.