发明名称 |
Sensor and method for measuring torque and/or axial stresses. |
摘要 |
<p>The present invention relates to a sensor and to a method for measuring torque and/or axial stresses applied to an object as well as a method for manufacturing magnetoelastic material to be used therefore. The sensor (20) comprises a magnetoelastic material and a sensing device (310) for non-contactingly sensing changes in permeability of the magnetoelastic material due to torque and/or axial stresses, said sensing device (310) comprising a coil system carrying out both an excitation and a pick-up function. The excitation frequency is so chosen that the pre-dominating process of magnetization of the magnetoelastic material will be small angle magnetization rotation, the excitation frequency being at least 300 kHz. <IMAGE></p> |
申请公布号 |
EP0523025(A1) |
申请公布日期 |
1993.01.13 |
申请号 |
EP19920850164 |
申请日期 |
1992.07.02 |
申请人 |
SKF NOVA AB |
发明人 |
HESTHAMAR, TORE;ALTHOFF, FREDRIK;LARSSON, THOMAS |
分类号 |
G01L1/00;G01L1/12;G01L3/10 |
主分类号 |
G01L1/00 |
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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