Device for controlling motor rotation speed
US4623827A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 5, 1986 |
| Grant date | Nov 18, 1986 |
| Priority date | — |
| Expiry date | Feb 5, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S388/906
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor speed control device for variably controlling the rotation speed of a motor over a wide range. The control device performs proportional integration (PI) using an actual motor speed and a set motor speed and applies the resulting amount of operation to a pulse wave modulator, thereby feedback controlling the motor rotation. A constant assigned to a speed compute section is variable to finely adjust the motor speed. A plurality of proporational gains K.sub.p and a plurality of integral gains are selected one at a time each according to the set motor speed. The PI operation, selection of a constant and speed computation are performed inside of a single CPU.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.