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magnetic circuit optimization in spindle motors for minimization of vibration and acoustics

IP.com Disclosure Number: IPCOM000023856D
Publication Date: 2004-Apr-01

Publishing Venue

The IP.com Prior Art Database

Abstract

Disclosed is an improved spindle motor stator design with a smaller slot angle to reduce magnetic excitation forces. This reduces RRO (repeatable run-out) and acoustic noise of hard disk drive system generated by magnetic forces between the stator and the stator. This applies to all hard disk drive spindle motor pole/slot configutrations as long as the stator has slots.