Apparatus and method for coordinating the movements of stages in a multi-stage multi-rate positioner system
US5798927A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 3, 1997 |
| Grant date | Aug 25, 1998 |
| Priority date | — |
| Expiry date | Jul 3, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/108
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-rate positioner system (50) receives unpanelized positioning commands from a database subsystem (64), profiles the commands (72) into a half-sine positioning signal, and further processes the signal into a low-frequency positioning signal (LFP) and a high-frequency positioning signal (HFP) for actuating respective slow (56, 58) and fast (54) positioners to target locations on a workpiece (62). The slow and fast positioners move without necessarily stopping in response to a stream of positioning command data while coordinating their individually moving positions to produce temporarily stationary tool positions (140) over target locations defined by the database. The multi-rate positioning system reduces the fast positioner movement range requirement while providing significantly increased tool processing throughput.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.