Abstract: This study compares Field-Oriented Control (FOC) and trapezoidal control techniques for Permanent Magnet Synchronous Motors (PMSMs) in modern industrial variable-speed applications.

Abstract: This study demonstrates a piezoelectric MEMS microspeaker containing triple reverse-trapezoid cantilever membranes. A unique driving method is also presented. The design features: (1) ...

National security, unlocked. Each Thursday, host Mary Louise Kelly and a team of NPR correspondents discuss the biggest national security news of the week. With decades of reporting from battlefields ...