Imbalance correcting apparatus for a rotor
US5130589A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 12, 1991 |
| Grant date | Jul 14, 1992 |
| Priority date | — |
| Expiry date | Mar 12, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for correcting imbalance of a rotor suspended by a magnetic bearing system including a displacement sensor for detecting a displacement of the rotor. An imbalance correcting circuit applies a trial imbalance correcting signal to the magnetic bearing system. A command computer applies an amount of correction to the imbalance correcting circuit and calculates an influence factor of the imbalance correcting signal on the basis of outputs from the displacement sensor before and after the imbalance correcting signal is applied to the magnetic bearing system, so as to cause the imbalance correcting circuit to apply a predetermined imbalance correcting signal produced from the influence factor to the magnetic bearing system, thereby minimizing the output of the displacement sensor to correct mass-imbalance of the rotor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.