Abstract:
PROBLEM TO BE SOLVED: To provide a coil for preventing the occurrence of a peak with a high electric-field strength.SOLUTION: A positioning device includes a planar motor having two sets of stators and translators. One set of the stator and the translator has a periodical magnetic structure, and another set of the stator and translator includes at least one coil applied to carry a current. The coil includes the wound strip of a sheeted conductive material, and the edge of the coil has a round profile.
Abstract:
PROBLEM TO BE SOLVED: To provide an eddy current damper for actualizing effective damping over a wide frequency range. SOLUTION: The eddy current damper comprises a conductor having a surface, and a magnet array extending over the surface of the conductor. Each magnet generates a magnetic field basically directed horizontally to the surface of the conductor. The magnet array generates magnetic fields having field widths and directed in mutual opposition. At least one of the magnetic fields, generated by the magnet, has a field width smaller than that of the magnetic field adjacent hereto. The conductor may have an opening having a width smaller than the field width of the corresponding magnetic field. COPYRIGHT: (C)2008,JPO&INPIT