发明名称 |
Magnetic flux detector with resistance of its potential setup resistor set larger than that of its search coil |
摘要 |
A magnetic flux detector comprises a core member 12 and an armature member 11, and the core member 12 generates a magnetic flux by an exciting coil 13 when the exciting coil receives an excitation current controlled by an excitation current controller 30. The magnetic flux detector further comprises a search coil 14, which is provided in a magnetic path for the magnetic flux, and a magnetic flux calculator 40, which determines the magnitude of the magnetic flux by measuring an electromotive force induced in the search coil 14 by a change in the magnetic flux. The magnetic flux calculator 40 has a potential setup resistor 43, whose resistance B is sufficiently larger than the internal resistance A of the search coil 14 (approximately A=B/3~B/30).
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申请公布号 |
US6603307(B2) |
申请公布日期 |
2003.08.05 |
申请号 |
US20020084922 |
申请日期 |
2002.03.01 |
申请人 |
HONDA GIKEN KOGYO KABUSHIKI KAISHA |
发明人 |
SEKIYA SHIGENOBU;SHIONOYA YOSUKE |
分类号 |
G01R33/02;F16D27/115;F16D65/18;G01R33/028;(IPC1-7):G01R33/00;F16D65/21 |
主分类号 |
G01R33/02 |
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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