TRANSDUCER OF ANGULAR DISPLACEMENTS Russian patent published in 1999 - IPC

FIELD: measurement technology, tests of angular displacements of working elements of metal-cutting machines. SUBSTANCE: transducer of angular displacement has immobile magnetic core with protrusions which are arranged on it in pairs in two mutually perpendicular planes. Magnetic core with protrusions has J-shaped form in these planes. Magnetosensitive elements are located on protrusions of magnetic core. Eight ferromagnetic rotors with permanent magnets are positioned between protrusions of magnetic core. Magnets have cross-section limited two sections of Archimedean spiral arranged in symmetry. Longitudinal section of magnets has form of trapezium with equal sides whose smaller base is located in region of section of Archimedean spiral with smallest curvature radius. Transducer shows possibility of selective choice of objects to be tested and of summing up of displacements of several objects. EFFECT: increased sensitivity of transducer thanks to structural features of permanent magnets. 1 cl, 3 dwg