Electromagnetic torsional stiffness element

Details Electromagnetic torsional stiffness element Electromagnetic torsional stiffness element

1977-08-05

1980-04-22

Ciarlante, Anthony V.

Measuring and testing

Instrument mechanism dampening

73432A, 74 55, G01D 1110

Patent

active

041988639

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. The conductor is located on a disk rotating in the air gap between the magnetic systems, and the disks also serve simultaneously the function of electrical damping of the motion.

REFERENCES:
patent: 3786685 (1974-01-01), Lademann et al.
patent: 4065974 (1978-01-01), Euer et al.

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