レゾルバの偏心による角度検出誤差と短絡巻線の効果の考察

概要

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When a built-in resolver is incorprated into a motor shaft, there is sometimes a problem of an eccentricity error caused by mounting misalignment and tilting. This eccentricity error affects the sensing accuracy of the resolver and causes an angular error. A short-circuit winding applied in quadrature to the exciting winding helps to reduce the angular error due to the shaft eccentricity if the internal impedence of the short-circuit winding is optimally designed.This paper (1) analyzes the mechanism whereby the angular error leads to an error equation, (2) analyzes how the short-circuit winding reduce the magnetic flux in the quadrature axis, which acts to induce the angular error, and (3) clarifies the conditions for realizing a resolver error of under 10' at an eccentric rate (δ/g×100%)of under 50%.
社団法人日本磁気学会の論文
1998-04-15