Method of and an apparatus for controlling a plurality of DC motors
US4644232A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1984 |
| Grant date | Feb 17, 1987 |
| Priority date | — |
| Expiry date | Oct 18, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P5/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention provides method and apparatus to control a plurality of DC motors each having an encoder by a sole microcomputer. The actual rotating speed of each DC motor is detected in response to the signal from the encoder. A pulse width of a voltage which is applied to each motor is controlled due to the deviation between the actual speed and a preset speed. The output signals from the encoders regarding a specific DC motor to the other DC motor are sequentially selected by a selection signal, thereby controlling the speed measurements and calculations regarding a plurality of DC motors and the duties of electric powers which are applied to the DC motors.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.