| 摘要 |
<p>PROBLEM TO BE SOLVED: To calculate a rotation angle of a rotating electrical machine more properly.SOLUTION: An R/D converter calculates a resolver angleφ, a cycle time t1, a phase-difference handling time t2 on the basis of a SIN signal and a COS signal from a resolver. An electronic control unit calculates offset errorΔφofer or periodic errorΔφcyer on the basis of a relation between the cycle time t1 and the phase-difference handling time t2 from the R/D converter (S110-S150), corrects the resolver angleφfrom the R/D converter 30 by use of the offset errorΔφofer or the periodic errorΔφcyer, and converts it to an electric angleθe as a rotation angle of a motor 10 (S160, S170).</p> |
