Abstract: An electromagnetic torsion stiffness arrangement with integrated auxiliary elements in which a magnetic field exerts restoring forces on a current-carrying conductor when moved from its rest position. The magnitude of the restoring forces are dependent on variation of current density. The current-carrying conductor serves as a primary winding of a position sensor, while serving simultaneously also for indicating torsion stiffness. A monitoring winding coil is displaced half a pole graduation from the conductor and moves along with the conductor. The magnetic field is produced by two multi-pole magnetic systems which form an air gap and face each other so that opposite poles face each other at the air gap. The conductor is movable within the air gap. A secondary winding of the position sensor is located outside of the air gap of the magnetic systems.

Abstract: A spring system has an adjustable spring force and includes at least one magnet. The magnet has a magnetic field, and at least one conductor passing direct current is disposed in the magnetic field. The magnet is formed by a number of pole pairs disposed along the path of displacement of the conductor, and each of the pole pairs encloses an air gap; the current-carrying conductor is a wire.