Method and apparatus for controlling the reciprocating translation of an interferometer reflector or other body
US5473429A · kind A · utility
1Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 25, 1994 |
| Grant date | Dec 5, 1995 |
| Priority date | — |
| Expiry date | Feb 25, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23Q15/0075
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
The method and apparatus effect reversal of a body moving at constant velocity, such as an interferometer reflector, by applying a retrograde electromagnetic force that varies in direct proportion to the distance the body has travelled past the point at which turn around is commenced. Circuitry employed is switched between proportional and integral control configurations, the latter permitting sine-wave oscillation to occur in a servo control loop during reversal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.