Control system for an electronically commutated motor
US4636936A · kind A · utility
40Cited by
42References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Mar 12, 2005 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06F2105/48
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Control system for an electronically commutated motor (ECM). The ECM includes a stationary assembly having a plurality of winding stages adapted to be selectively commutated, and rotatable means associated with the stationary assembly in selective magnetic coupling relation with the winding stages. A digital computer operating under stored program control effects the commutation of the winding stages by selectively supplying power thereto in response to a pattern of control signals leaving at least one of the winding stages unpowered at any one time while the other winding stages are powered.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.