ROTATION ANGLE DETECTION APPARATUS

摘要

PROBLEM TO BE SOLVED: To provide a rotation angle detection apparatus excellent in detection accuracy over a wide range of rotation angles despite being constituted of a small number of parts even in an environment in which temperature drastically changes. SOLUTION: The rotation angle detection apparatus is provided with an angle detecting means having both detection circuits including a detection element part comprising both a coil and a resistor and an inductance changing means for changing the inductance of the coil according to the rotation of a rotator to be measured; a reference pulse voltage generating means 101 for generating output signals in the detection circuits 110 and 120; and a computing means for computing output signals of the detection circuits. The rotation angle detection apparatus computes a rotational angle of the rotator to be measured by comparing a reference pulse voltage generated by the reference pulse voltage generating means with output voltages of the detection circuits when the reference pulse voltage is inputted. COPYRIGHT: (C)2008,JPO&INPIT