| 摘要 |
<p>The invention relates to a device for detecting a torsion angle (dw) of a shaft (10) and/or a torque (Md) occurring on the shaft (10), and to a method for operating the device. The procedures are characterised in that a shaft (10) is sensed in the circumferential direction (12) by at least one first inductive sensor (S1), which produces an output signal (Sig1) that is influenced by the structure, in particular the inhomogeneity, of the metal shaft material, the output signal (Sig1) of the first sensor (S1) is compared with a first reference pattern (Ref1) and from the comparison a first angle of rotation (w1) is determined, the shaft (10) is sensed in the circumferential direction (12) at a predetermined distance (L) from the first inductive sensor (S1) by at least one second inductive sensor (S2), which produces an output signal (Sig2) that is likewise influenced by the structure, in particular by the inhomogeneity, of the metal shaft material, the output signal (Sig2) of the second sensor (S2) is compared with a second reference pattern (Ref2), a second angle of rotation (w2) is determined from the comparison and the difference (w2-w1) between the first angle of rotation (w1) and the second angle of rotation (w2) is determined and made available as torsion angle (dw) of the shaft (10).</p> |
