An angle-torque sensor has: a torque detection coil that detects a change in
state
quantity in a mechanism to detect a relative angle made between input axis and
output axis of a torsion bar to be twisted by a torque; an angle detection coil
that detects a change in state quantity in a mechanism to detect a rotation angle
of a reduction axis which rotates with a rotation being transmitted from the input
axis or output axis and being reduced by a reduction mechanism; a torque detection
circuit that detects the relative angle from the output of the torque detection
coil; and an angle detection circuit that detects the rotation angle from the output
of the angle detection coil.
