Motor
US11437892B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2020 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Mar 2, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P23/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An offset of an output voltage of a magnetic sensor caused by an external magnetic field is removed. A motor according to a disclosed embodiment includes: a first magnetic sensor that detects a rotational position of a rotor; a second magnetic sensor that is arranged at a predetermined mechanical angle with respect to the first magnetic sensor and detects the rotational position of the rotor; a signal amplifier that amplifies a difference between a first signal which is a signal output from the first magnetic sensor and a second signal which is a signal output from the second magnetic sensor; and a pulse signal generator that converts an output signal of the signal amplifier into a pulse signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.