Apparatus and method for driving a brushless motor
US7081726B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2003 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Jul 7, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/16
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A drive system for a brushless motor. The brushless motor includes a rotor having opposite magnetic poles on its periphery, and a stator facing the rotor. The stator has, for example, three interconnected coils at equal angular intervals. The drive system includes a memory for storing drive data which represent drive currents supplied to the respective coils at each angular position of the rotor. The drive system also includes a controller for reading those drive data which best match a target angular position of the rotor, from the memory. The controller generates drive signals based on the drive data. The drive system also includes a drive circuit for supplying the drive currents to the respective coils, based on the drive signals, respectively. The drive system can precisely control the angular position of the brushless motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.