Cogging force reduction of two-phase linear hybrid stepping motor

This paper presents a /spl pi//4-multiple-coupled two-phase linear hybrid stepping motor (LHSM) that has two windings per phase, one of which shares the other phase winding. The proposed motor shows a unique ability to deliver low cogging force without any complex control scheme or additional power electronics hardware in microstepping control. An analytical and experimental comparison between conventional /spl pi//2- and /spl pi//4-multiple-coupled LHSM confirms the effectiveness of the proposed design.