| 摘要 |
A ironless magnetic motor ( 21 - 23 ) employs a magnetic track ( 30 ) and a forcer ( 40 ). The forcer ( 40 ) is orientated a magnetic field (beta) across a linear air gap of the magnetic track ( 30 ) to generate a drive force (F<SUB>X</SUB>) parallel to the X drive axis and orthogonal to the Z levitation axis in response to a commutation drive current (I<SUB>X</SUB>) and to generate a force (F<SUB>Z</SUB>, F<SUB>Y</SUB>) orthogonal to the X drive axis in response to a commutation coil current (I<SUB>Z</SUB>, I<SUB>Y</SUB>) being superimposed on and phase shifted from the commutation drive current (I<SUB>X</SUB>). To this end, a set of levitating turns of the coil ( 41 ) parallel to the X drive axis and orthogonal to the Z levitation axis may be internal or external to magnetic field (beta), and the forcer ( 40 ) may be centered or offset from a center X-Z longitudinal axis (CP) of the linear air gap.
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