| 摘要 |
A force transducer element ( 20 ) comprises a body ( 22 ) of magnetisable material having at least one magnetised region ( 30 ) at an angle, say 45°, to the force-sensing direction (P-P). Preferably there are a plurality of parallel magnetised regions of alternating opposite polarity of magnetisation to form closed loops ( 43 p , 43 n). The element may be a block having opposite force receiving surfaces ( 24, 24 '). The body ( 122 ) may contain plural transducer elements ( 120 a, 120 b) angled to one another to resolve force directions. The principle is extended to a circular transducer element ( 243 ). The invention may be implemented in a flexible magnetic tape. Another embodiment ( 300 ) is realised in a planar structure in which a ferromagnetic core ( 310 ) is subject to a magnetic field ( 326 ) at an angle to the direction (F) of force application generated by laterally offset coils ( 312, 314 ). A sensor device ( 330 ) is fabricated in the structure.
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