Control system for a magnetic type bearing
US4795927A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 24, 1987 |
| Grant date | Jan 3, 1989 |
| Priority date | — |
| Expiry date | Apr 24, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16C32/0451
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control system for a magnetic type bearing is fed back a signal from a position sensor with respect to a floating member to effect control such as phase compensation so that the magnetic type bearing is actively employed. In order to change unstabilizing force produced by the magnetic type bearing in a specified frequency range to stabilizing force, a first signal obtained by causing the signal from the position sensor to pass through a first filter having a cut-off frequency range corresponding to a predetermined frequency range in which stabilization is to be attained and a second signal obtained by causing a signal having an opposite polarity to that of the signal from the position sensor to pass through a second filter having a passing frequency range which is substantially identical with the predetermined frequency range are added to each other and the addition signal is fed back to an electromagnet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.