Polyphase DC motor with sensor poles
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United States of America Patent
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Aug 18, 1987
Grant Date -
N/A
app pub date -
Mar 17, 1986
filing date -
Mar 17, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A polyphase brushless DC motor has an integral automatic feedback arrangement and a high degree of magnetic balance. The stator pole elements of the motor are identical and equidistantly spaced, and the coils with which they are wound are connected as pairs; the pole elements in most of the armature pairs are directly adjacent one another. The sensor means has at least two circuit legs, each being connected to paired pole elements of the stator to provide a sensor channel, the channels cooperating to provide highly accurate rotor position feedback information.
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