Method and apparatus for controlling a motor in a disc drive by modulating the commutation angle
US6016043A · kind A · utility
8Cited by
9References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1998 |
| Grant date | Jan 18, 2000 |
| Priority date | — |
| Expiry date | Jan 28, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/34
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor control circuit controls a motor in a disc drive is provided. The motor control circuit includes a commutation circuit which provides commutation signals to the motor to commutate the motor at a commutation frequency. A frequency modulation circuit is operably coupled to the commutation circuit. The frequency modulation circuit provides a modulation signal which frequency modulates the commutation frequency according to a predetermined pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.