Method and means for driving a brushless D.C. motor
US4763052A · kind A · utility
19Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1987 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Jun 25, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/42115
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A brushless D.C. motor drive circuit provides full available D.C. bus voltage to the motor during periods of motor speed acceleration and deceleration and modulated D.C. voltage to the motor during periods when no demands are made on the motor to accelerate or decelerate, thus avoiding time-lag problems inherent in the type of conventional brushless D.C. motor drive circuits which employ pulse-width modulators to continuously provide modulated D.C. voltage to the motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.