Torque optimisation for small spindle motors based on reduced-basis finite element formulation

Issue title: Special Volume: Proceedings of the eleventh International Symposium on Applied Electromagnetics and Mechanics ISEM-Versailles ISEM 03

Article type: Research Article

Authors: Jabbar, M.A.^{a; *} | Azeman, Azmi Bin^a

Affiliations: [a] Electrical Machines and Drives Laboratory, National University of Singapore, Singapore 117596

Correspondence: [*] Corresponding author: Tel.: +65 6874 6500; E-mail: elemaj@nus.edu.sg

Abstract: A Reduced-Basis Finite Element Method has been used for fast and accurate alternative to standard Finite Element algorithms for optimisation problems. Improvement in computational speed is derived from the use of a single static mesh for 'basis' calculations and through application of geometric transformations for regions where variations are required. The method is applied on an 8-pole/9-slot spindle motor used in Hard Disk Drives for the minimization of cogging torque. The desired outcome is a robust algorithm possessing the accuracy of Finite Element Analysis and improved speed of computation.

Keywords: finite elements, reduced basis, optimisation, cogging torque

DOI: 10.3233/JAE-2004-590

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 19, no. 1-4, pp. 355-360, 2004