Coordinate data rotation calculation device and coordinate data rotation calculation method

摘要

PROBLEM TO BE SOLVED: To provide a coordinate data rotation computing device with which it is possible to compute the vectorial deflection of a fundamental wave.SOLUTION: The coordinate data rotation computing device comprises: a fundamental wave selector (311) for selecting fundamental wave coordinate data or fundamental wave rotation coordinate data; a higher harmonics selector (312) for selecting higher harmonics coordinate data or higher harmonics rotation coordinate data; a rotation direction determination unit (302) for determining a direction of rotation on the basis of the coordinate data selected by the fundamental wave selector and the higher harmonics selector; a fundamental wave rotation computing unit (303) for rotating the coordinate data selected by the fundamental wave selector in the determined direction of rotation and outputting the fundamental wave rotation coordinate data; a higher harmonics rotation computing unit (304) for rotating the coordinate data selected by the higher harmonics selector in the determined direction of rotation and outputting the higher harmonics rotation coordinate data; and a rotation angle cumulative addition unit (305) for performing cumulative addition to angles of rotation rotated by the fundamental wave rotation computing unit on the basis of the determined direction of rotation.SELECTED DRAWING: Figure 4