Servo-control apparatus for motor
US6713983B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 27, 2002 |
| Grant date | Mar 30, 2004 |
| Priority date | — |
| Expiry date | Mar 27, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P6/085
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides a servo-control apparatus for a motor, comprising position detecting means for detecting a rotational position of a motor, rotational speed signal generating means for generating a rotational speed signal corresponding to a rotational speed of a motor, and digital control means for generating an exciting electric current to be supplied to a coil of the motor as a PWM signal in accordance with the rotational speed signal from the rotational speed signal generating means, and wherein a switching signal for switching the exciting electric current to be supplied to the coil of the motor is formed by a pre-driver in accordance with the position detection signal from the position detecting means, and the pre-driver combines the switching signal with the PWM signal from the digital control means to generate an electric current control signal by which the motor is driven, thereby coping with the speed change of the motor quickly and stably.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.