Linear pulse motor

Details Linear pulse motor Linear pulse motor

1994-04-26

1996-06-18

Stephan, Steven L.

Electrical generator or motor structure

Dynamoelectric

Linear

318135, H02K 4102

Patent

active

055280900

ABSTRACT:
It is an object of the present invention to provide a linear pulse motor capable of being configured even if the number of salient poles of a stator is odd and having increased ampere-conductors of a winding and large driving force. The linear pulse motor includes a stator having a plurality of salient poles 11, 12, . . . 15 disposed at equal pitch angle and having an inner peripheral surface on which teeth 16 are formed in the direction of a shaft 16, and a mover 2 disposed movably in the shaft direction. A stator core 10 includes stator iron plates 30 laminated while rotated successively by the equal pitch angle of the salient poles. When k is an integer equal to or larger than 1, m is the number of phases, and n is equal to or smaller than m/2 and nearest to m/2, the stator iron plates 30 has km salient poles P1, P2, . . . P5. The stator iron plates 30 include k sets of salient poles each set including n salient poles having a small inner radius and (m-n) salient poles having a large inner radius arranged in order of the description being formed in top ends of the salient poles opposite to the mover as viewed from the side of the mover.

REFERENCES:
patent: 4335338 (1982-06-01), Sawyer
patent: 5374865 (1994-12-01), Yoshimura et al.
patent: 5418413 (1995-05-01), Satomi
IEEE Industry Applications Society, 8, Jan. 1992, "Linear Pulse Motors for Accurate Positioning" by Y. Takeda, et al.
Patent Abstracts of Japan, vol. 11, No. 204, Jul. 2, 1987, and JP A-62 025 867, Feb. 3, 1987.
Patent Abstracts of Japan, vol. 13, No. 198, May 11, 1989 and JP A-01 019 958, Jan. 24, 1989.

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