Circuits and methods of determining position and velocity of a rotor
US9825564B2 · kind B2 · utility
8Cited by
2References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 2016 |
| Grant date | Nov 21, 2017 |
| Priority date | — |
| Expiry date | Jan 19, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P21/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor controller includes a square wave voltage generator and adding circuitry for adding the square wave voltage to a first drive voltage that is connectable to the stator windings of a motor. A current monitor for monitoring the input current to the motor as a result of the square wave voltage. A device for determining the position of the rotor based on the input current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.