MEASUREMENT DEVICE TO DETERMINE ABSOLUTE ANGLE OF ROTATION OF ROTARY MEASURED OBJECT Russian patent published in 2015 - IPC G01D5/04 

FIELD: measurement equipment.

SUBSTANCE: invention relates to a measurement device (9) for determination of an absolute angle (φ) of rotation of a rotary measured object. A shaft (8) of the measured object comprises the first geared wheel (Z1). The first geared wheel (Z1) directly or indirectly engages with the second geared wheel (Z2) and one third geared wheel (Z3). Number (z1, z2, z3) of teeth in separate geared wheels (Z1, Z2, Z3) differs. Each geared wheel (Z1, Z2, Z3) comprises a selsyn sensor (D1, D2, D3), which recognises the angle (z1, z2, z3) of rotation of the given geared wheel (Z1, Z2, Z3). There is a solving unit, which determines difference (z1-z2) of angles of rotation of the second geared wheel (Z2) relative to the first geared wheel (Z1) and difference (z1-z2) of angles of rotation of the third geared wheel (Z3) relative to the first geared wheel (Z1) and on the basis of calculation of the total (SumDiff=(z1-z2)+(z1-z3)) of differences (z1-z2, z1-z3) of certain angles (z1, z2, z3) of rotation of geared wheels (Z1, Z2, Z3) determines quantity of integer-valued rotations and the residual angle (z1) of rotation of the shaft of the measured object.

EFFECT: increased accuracy.

11 cl, 4 dwg