کنفرانس بین المللی ماشین و محرکه های الکتریکی

صفحه اصلی / The 5th International Conference on Electrical Machines and Drives

Influence of Tooth Shoe Geometry on the Accuracy of Variable Reluctance Resolvers

نویسندگان :

Mahdi Sadeghi Nazarabadi¹ Farid Tootoonchian²

1- Iran University of Science and Technology 2- Iran University of Science and Technology

کلمات کلیدی :

Average of Absolute Position Error (AAPE),،Finite element Analysis(FEA),،Slot Opening,،Tooth shoe,،Variable Reluctance (VR) Resolver

چکیده :

Accurate rotor position sensing is critical for electric drives, motion control, and aerospace applications. Variable-reluctance (VR) resolvers are robust and cost-effective, but their performance is highly sensitive to stator and rotor geometry, particularly slot opening and tooth shoe length. In practice, stator slotting introduces both spatial and leakage-induced harmonics, which degrade position accuracy. This study investigates the effect of different tooth shoe geometries on VR resolver performance using finite element analysis (FEA), with validation performed on a prototype sensor. Several novel stator-tooth shoe topologies are proposed, and for each topology, the optimal shoe length is determined. The results reveal the interplay between structural parameters and resolver accuracy, providing guidelines for design optimization to minimize the average of absolute position error (AAPE).