Reciprocating motor having controllable rotor position
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United States of America Patent
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-
May 8, 2001
Grant Date -
N/A
app pub date -
Nov 5, 1997
filing date -
Nov 6, 1996
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To provide a reciprocation motor capable to detect rotation angle of rotor accurately. Rotor 1 is a magnet having two poles to radial direction and comprises half-cylindrical magnets. Driving coils 5a and 5b are bound equally at coil board 3. Magnetic sensor 7 is fixed at outside and under side of driving coil 5b on coil board 3. Such a construction makes magnetic sensor hard to be influenced by flux generating caused by current flowing through driving coil 5b. Therefore, it is possible to improve position detecting accuracy of rotor 1.
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