Method for regulating the power supply to a direct-current motor and a device for the application of said method
US4468597A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1982 |
| Grant date | Aug 28, 1984 |
| Priority date | — |
| Expiry date | Jan 22, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/915
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The power supply to an electric actuating motor is regulated by reducing the differences between current intensity or voltage and a reference value. Two transducers measure the current intensity and the voltage. A selection stage chooses the higher of the two values and a comparison stage delivers a difference signal with respect to the reference value established by a stage of the potentiometer type. A regulator produces an action which is compared within a comparator with a sawtooth signal emitted by an oscillator. Depending on the sign of the comparison, a control stage supplies the motor during a variable fraction of the period of the oscillations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.