Rotational angle detector and method
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United States of America Patent
Stats
-
Dec 11, 2001
Grant Date -
N/A
app pub date -
Sep 16, 1999
filing date -
Sep 17, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A rotor is fixed to a steering shaft to rotate with the steering shaft, and outer and inner slits are formed along different circles on the rotor. Outer and inner sensors, which detect the presence or absence of the slits, generate reflective codes and are located next to the rotor. Stored pattern data that matches the reflective code is used to determine the rotational angle. Alternatively, if the pattern data does not match the reflective codes, the rotational angle of the steering shaft is computed on the basis of the reflective codes.
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Cited Art Landscape
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