Control method for three-phase dc brush less motor, control device, and image forming device
US10020760B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2016 |
| Grant date | Jul 10, 2018 |
| Priority date | — |
| Expiry date | Jun 14, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/22
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A control method for a three-phase DC brushless motor including a rotor that includes a plurality of magnetic poles and that is rotatable, a stator that includes a plurality of magnetic field generation parts to generate a magnetic field to be a driving source of the rotor, and a sensor to detect a magnetic pole of the rotor which pole passes through a first position in the stator is provided, the method including: detecting in which the sensor detects a first magnetic pole of the rotor which pole passes through the first position; estimating, based on a result of the detection of the first magnetic pole, time until the first magnetic pole reaches a second position in the stator; and controlling the plurality of magnetic field generation parts in such a manner that a suitable magnetic field is generated when the first magnetic pole passes through the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.