Motor velocity control apparatus
US4837491A · kind A · utility
8Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 1986 |
| Grant date | Jun 6, 1989 |
| Priority date | — |
| Expiry date | Oct 16, 2006 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P5/50
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A motor velocity control apparatus according to the present invention has at least one of the following is included with a servoamplifier: a current feedback gain changeover circuit; a velocity feedback gain changeover circuit; a velocity loop gain changeover circuit; a changeover circuit for a current loop amplitude and phase table storage circuit. Accordingly, the invention is well-suited for changeover control of a plurality of spindle motors of different ratings in a machine tool.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.