| 摘要 |
PROBLEM TO BE SOLVED: To reduce cogging torque of a linear motor. SOLUTION: The profile of the teeth or the magnetic pole of a permanent magnet 1 formed at a slider or a stator of the linear motor is represented by a hyperbolic function 20 or by the function of an inverted cosine of a trigonometric function. In other words, the gap side profile provided when the teeth or magnetic pole of the permanent magnet 1 is cut by such line as parallel to the relative movement direction of the stator and slider is the shape 20 which is represented by a hyperbolic function or the shape represented by the function of inverted cosine of a trigonometric function. Thus, cogging torque can be reduced smaller than that of a conventional linear motor formed with a straight line, arc, parabola, and hyperbola. COPYRIGHT: (C)2004,JPO
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