Arrangement for measuring a force or a torque, using at least three magnetic sensors

Abstract

The present invention relates to an arrangement for measuring a force and/or a torque (Mt) on a machine element extending along an axis, using the inverse magnetostrictive effect. The machine element has at least two magnetization areas for magnetization purposes, extending circumferentially around the axis. In addition, there are magnetically neutral areas, each area being arranged axially between the magnetization areas and/or axially next to the magnetization areas. The arrangement further includes at least one first magnetic sensor, a second magnetic sensor and a third magnetic sensor, each of which is designed to individually measure a direction component of a magnetic field caused by the magnetization and also by the force and/or torque (Mt) and each of which lies in a different axial position. According to the invention, the third magnetic sensor lies in an axial position of one of the magnetically neutral areas.

Dependencies are inferred from the claim text.