We show that any closed set E having a σ-finite (n— 1)-dimensional Hausdorff measure does not support the nonzero distributional divergence of a continuous vector field; in particular it has the ...

Visible on this exploded view of the NanoLith 7000 blower assembly are the dual dc motors and MTS Sensorless Drive-Blok controllers. Use of a flux-vector drive was key in fielding a photolithography ...

Variable frequency drives convert ac power to dc and then reshape that current to control ac motors. All types control speed by varying current frequency, but one subtype — flux vector drives — uses ...