| 摘要 |
PURPOSE:To detect the rotating speed of a torque transmission shaft with non- contact and to monitor a power by arranging a magnetic core across which a coil is wound at the outside of a magnetic material thin belt via space with non-contact, and detecting a gap when the torque transmission shaft is rotated. CONSTITUTION:The torque of the change of magnetic characteristic by stress transmitted from the torque transmission shaft 1 to a rectangular amorphous magnetic alloy thin belt 2 is detected by the impedance change of the coil 5 wound across the transmission shaft 1 in concentric circle shape. In such a way, the torque generated in the transmission shaft 1 is detected by the stress- magnetic effect of the thin belt 2 provided with magetostriction, and also, difference whether substance on the transmission shaft 1 is fixed magnetic alloy or the gap 3 can be detected based on the change of magneto-resistance formed between a rotating transmission shaft 1. Therefore, it is possible to detect the magnitude nd direction of torque and also, the rotating speed.
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