Device for measuring rotational angle of rotary member
US4262251A · kind A · utility
37Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1978 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Aug 2, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/027
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A rotatable disk having a plurality of calibration segments and at least one marker along the peripheral portion thereof is provided while a stationary pick-up provided adjacent the disk for generating a first signal indicative of calibration segments and a second signal indicative of a reference position of the rotation of the disk. The frequency of the first signal is increased in order to accurately measure the rotational angle from the reference position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.