Electrical rotary drive
US6351048B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2000 |
| Grant date | Feb 26, 2002 |
| Priority date | — |
| Expiry date | Apr 28, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C2316/18
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electrical rotary drive, designed as a bearingless motor, has a magnetically journalled rotor (3) and a stator (2) which comprises a drive winding (6) having at least two loops (61, 62) for producing a magnetic drive field which produces a torque on the rotor (3), and has a control winding (7) having at least three loops (71, 72, 73, 74) for producing a magnetic control field by means of which the position of the rotor (3) with respect to the stator (2) can be regulated, with each loop (61, 62) of the drive winding (6) belonging to a different electrical drive phase and each loop (71-74) of the control winding (7) belonging to a different electrical control phase, and having a setting device (4) which supplies each loop (61, 62) of the drive winding (6) and each loop (71-74) of the control winding (7) with a phase current or a phase voltage as a setting parameter, with the setting device (4) being designed in such a manner that the setting parameter for each loop (61, 62) of the drive winding (6) and for each loop (71-74) of the control winding (7) can be regulated independently of the setting parameters for the other loops.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.