发明名称 |
Position sensing for rotor in hybrid stepper motor |
摘要 |
A method and system are provided for sensing the position of a rotor in a hybrid stepper motor. First and second Hall sensors are positioned in a spaced-apart relationship with the first and second armatures of the rotor such that the first and second Hall sensors generate electrical outputs that are 90° out of phase with one another as the rotor rotates. The electrical outputs are adjusted relative to a reference, and the amplitude of the electrical outputs is further adjusted to account for spacing differences between the rotor and each of the first and second Hall sensors.
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申请公布号 |
US7911174(B1) |
申请公布日期 |
2011.03.22 |
申请号 |
US20080039506 |
申请日期 |
2008.02.28 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION |
发明人 |
HOWARD DAVID E.;ALHORN DEAN C.;SMITH DENNIS A. |
分类号 |
G05B19/40 |
主分类号 |
G05B19/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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