Abstract: A torque transducer for measuring torque transmitted in a rotating as well as a stationary shaft. The torque transducer comprises a transducer shaft 1 arranged with a cylinder-shaped magnetoelastic region 2 fixed to the cylindrical periphery of the transducer shaft, which cylinder-shaped magnetoelastic region is permanently magnetized in the azimuthal direction. The transducer shaft with the cylinder-shaped magnetoelastic region is surrounded by a winding 4 which is supplied by an alternating current. Further, the winding is connected to a phase-sensitive detector 5. According to the present invention, a magnetic and non-linear ferromagnetic material 3′ is arranged in physical contact with the cylinder-shaped magnetoelastic region 2. The advantages are that the transducer shaft is manufactured independently of the magnetic properties of the shaft material and may substantially consist of a ferromagnetic material.

Abstract: A torque transducer for measuring torque transmitted in a rotating as well as a stationary shaft. The torque transducer comprises a transducer shaft 1 arranged with a cylinder-shaped magnetoelastic region 2 fixed to the cylindrical periphery of the transducer shaft, which cylinder-shaped magnetoelastic region is permanently magnetized in the azimuthal direction. The transducer shaft with the cylinder-shaped magnetoelastic region is surrounded by a winding 4 which is supplied by an alternating current. Further, the winding is connected to a phase-sensitive detector 5. According to the present invention, a magnetic and non-linear ferromagnetic material 3′ is arranged in physical contact with the cylinder-shaped magnetoelastic region 2. The advantages are that the transducer shaft is manufactured independently of the magnetic properties of the shaft material and may substantially consist of a ferromagnetic material.

Abstract: A magnetoelastic torque transducer for electrically measuring torsional stresses in a shaft (1) which is provided with at least one zone (6, 7) with an anisotropy the effect of which is to deflect the magnetic flux density in a direction away from the natural direction along the shaft and where the shaft is of a material which has a geometrically anisotropic microstructure with at least two phases, of which one phase consists of relatively soft-magnetic continuous streaks with magnetoelastic properties and at least one phase has a considerably lower permeability, the deflection of the magnetic flux density in the zone/zones being achieved by mechanically distorting the shaft within the zone/zones.

Abstract: A flatness measuring device for rolled strip (5) according to the invention comprises a measuring roller over which the rolled strip passes. The measuring roller is divided into a number of roller sections (6). The forces on the roller sections are measured and can then be converted, via recalculations, into a measure of the flatness of the strip, whereby a flatness profile across the strip can be obtained. Special to the invention is the method of measuring the force. Between each roller section (6) there is a side member (ABC) which supports the shaft ends (7) of two adjacently positioned roller sections. The side member in principle consists of three beams (A, B, C) connected together in the form of a triangle. The beam A for all the side members is attached to a common plate (1). The first ends of the beams A and B connected together via a flexible diaphragm (2). At the second end of the beam B the shafts are journalled.

Abstract: A torque transducer comprises a sleeve of magnetic material, which is attached concentrically and rigidly to an axle, and at least two stationary windings for excitation of the axle and two windings for sensing the torque transmitted by the axle, as well as a magnetic housing concentrically surrounding the windings. The sleeve is formed with two parallel, annular zones, which are provided with slits having a substantially regular pitch and making an angle of .+-.45.degree. with a generatrix of the envelope surface of the sleeve. The excitation windings are series-connected and generate a magnetic flux in the axle surface. The measuring windings are connected in opposition, whereby the measuring signal is approximately zero in case of zero torque in the axle. When the axle is subjected to a torque, the bars between the slits in the annular zones will be subjected to tensile stress and compressive stress, respectively, in the direction of the flux.

Abstract: A magnetoelastic transducer comprises a plurality of sheets assembled together into a sheet package, the sheet package being provided in known manner with at least one excitation winding and at least one measuring winding. The sheet package comprises first sheets of non-magnetic material of austenitic steel, interleaved with second sheets of compound type, each of the sheets of compound type comprising an inner core layer of magnetic material, for example silicon steel, metallically connected on each of its sides to a respective outer layer of non-magnetic material of austenitic steel.