Device for measuring rotational angle of rotary member
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United States of America Patent
Stats
-
Apr 14, 1981
Grant Date -
N/A
app pub date -
Aug 2, 1978
filing date -
Aug 29, 1977
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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