发明名称 |
Magnetic force sensor and control circuit for same |
摘要 |
A magnetic force sensor and method for measuring a force applied to an object. A magnetostrictive element mounted on at least a portion of the object is subjected to a prestress. A conductive coil is wound around at least a portion of the magnetostrictive element. An excitation source, which includes one of a current source and a voltage source, excites the conductive coil. A detection circuit detects one of an induced voltage across the conductive coil and a voltage drop across a resistor in series with the conductive coil. The detected voltage can be used to determine the applied force. A second coil can be used in a bipolar sensor or to correct for variations in ambient conditions.
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申请公布号 |
US2004211268(A1) |
申请公布日期 |
2004.10.28 |
申请号 |
US20030423317 |
申请日期 |
2003.04.25 |
申请人 |
MORELLI DONALD T.;SCHROEDER THADDEUS |
发明人 |
MORELLI DONALD T.;SCHROEDER THADDEUS |
分类号 |
G01L1/12;(IPC1-7):G01L1/12;G01L1/25 |
主分类号 |
G01L1/12 |
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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