Toroidal-coil torque sensor following the magnetostriction principle

摘要

Assigned to a torsionally loaded rotation body (W) are excitation coils and compensation excitation coils (P1, P2; K1, K2), connected in series, for torsionally loaded films (F1, F2) exposed to approximately equal disturbing fields, as well as torsion-free compensation films (FK1, FK2), and measuring coils (M1, M2) and compensation measuring coils (MK1, MK2), connected in opposition, which are magnetically screened from the outside, the torsion-free compensation films being arranged on the compensation excitation coils (K1, K2) which, for their part, are respectively surrounded by the associated compensation measuring coils (MK1, MK2).