Automatic repositioning of mirrors mounted within concave-shaped boundaries
US5142209A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1991 |
| Grant date | Aug 25, 1992 |
| Priority date | — |
| Expiry date | Aug 2, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/49143
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A memory mirror system having a mirror 19 mounted within concave-shaped mirror movement boundaries, two constant speed motors 16, 18 each controlling an axis of mirror movement, position feedback signals 26,28 from each motor, push button inputs 12 and an electronic controller 10, is provided with automatic mirror repositioning that drives the mirror from a start position to a memory position in minimum time without colliding with any mirror movement boundaries by driving the mirror position toward the target along the axis farthest from the target and driving the mirror toward the origin along the other axis until the mirror position is within a predetermined safe region along that axis or the current position is 45 degrees from the target, then driving the mirror in the direction of the target along an axis for which the distance to the target is not less than the distance to the target along the other axis or in which the direction toward the target is also toward the origin.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.