Relative position transducer for oscillating and scanning a read head over a coded track region
US5171983A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 5, 1990 |
| Grant date | Dec 15, 1992 |
| Priority date | — |
| Expiry date | Jan 5, 2010 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03M1/282
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A relative position transducer for determining the angular position of a first member angularly movable relative to a second member includes a coded track on the first member, a read head mounted on the second member, drive means for oscillating the read head to scan over and read a limited region of the coded track, and a microcomputer for interpreting the code read by the read head as the position. A first sensor detects when the read head is in a predetermined reference position and a second sensor detects the end points and direction of the read head scan. The sensor outputs are connected to the computer for correct interpretation of the read head output. An interplation is used to improve the accuracy of the position determination.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.