Rotational angle detecting device, torque detecting device and steering apparatus

摘要

A rotational angle detecting device constructed such that one or a plurality of targets 3 are provided on a rotational member 12 so that the first detecting means 1A outputs a detection signal according to the rotation of the rotational member 12, the second detecting means 1B outputs a detection signal whose phase is different from that of the first detecting means 1A, and the rotational angle of the rotational member 12 is detected based on the detection signals outputted by the first detecting means 1A and second detecting means 1B. It is possible to realize a rotational angle detecting device capable of detecting a rotational angle even when a sag portion exists in the characteristics of the detection signals of the detecting means and easily managing the accuracy of the detection signals of the detecting means at the manufacturing process, and realize a torque detecting device and steering apparatus using this rotational angle detecting device.