Method and apparatus for controlling a magnetic bearing
US5486729A · kind A · utility
12Cited by
11References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1993 |
| Grant date | Jan 23, 1996 |
| Priority date | — |
| Expiry date | Mar 5, 2013 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C32/048
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A controller of magnetic bearing controls the rotor speed with a reduced drive current while suppressing the rotor vibration. The controller implements the ABS control, N-cross control, N-straight control and FF control in proper combination in addition to the basic PID control. A computer in the controller determines the activation of each control in accordance with a predetermined table of control plan in response to the detected rotor speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.