METHOD OF CORRECTING DETECTION ANGLE ERROR IN RESOLVER, R/D CONVERTER FOR PERFORMING THE METHOD OF CORRECTING DETECTION ANGLE ERROR IN RESOLVER, AND CPU INCLUDING R/D CONVERSION SECTION FOR PERFORMING THE METHOD OF CORRECTING DETECTION ANGLE ERROR IN RESOLVER

摘要

PROBLEM TO BE SOLVED: To provide an R/D converter for correcting angle errors without requiring any unneeded storage means or storage regions when performing angle correction.;SOLUTION: The R/D converter 2 calculates a rotational angle of a motor 1 from an output voltage of the resolver 10 and applies an excitation signal sint to the resolver 10. The R/D converter 2 receives a voltage V1 at a sin side and a voltage V2 at a cos side from the resolver 10 to detection temperature T within a prescribed range of the resolver 10, calculates a ratio of the V1 to the V2 to the detection temperature T, and calculates a corrected rotational angle of the motor 1 according to a numerical formula 6 by voltage V1' at sin side and voltage V2' at cos side input after the V1 and V2 for calculating the ratio are input.;COPYRIGHT: (C)2011,JPO&INPIT