Skew

Traditionally, a system of expansion joints, roller supports, and other structural releases has been provided on long multiple-span highway bridges to permit thermal expansion and contraction. Flow of runoff water through open bridge deck joints or leaking sealed joints has been…

This dissertation presents a methodology for designing low noise small permanent magnet synchronous motor (PMSM) drives by addressing the issues of cogging torque, torque ripple, acoustic noise and vibration. The methodology incorporates several pole shaping and magnet skew sche…