| 摘要 |
A permanent magnet device (110) includes a permanent magnet (112) having North and South pole faces with a first pole piece (114) positioned adjacent one pole face thereof and a second pole piece (116) positioned adjacent the other pole face thereof so as to create at least two potential magnetic flux paths (130, 132). First control coils (122, 124) are positioned along one flux path (130) and second control coils (126, 128) is positioned along the other flux path (132), each coil being connected to a control circuit (not shown) for controlling the energization thereof. The control coils (122, 124, 126, 128) may be energized in a variety of ways to achieve desirable motive and static devices, including linear reciprocating devices, linear motion devices, rotary motion devices and power conversion.
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