Abstract
A cylindrical linear pulse motor (CLPM) of a new construction was proposed in this paper. The conventional CLPM, which has a permanent magnet between A phase and B phase stator, has a problem that thrust unbarance occurs becouse the magnetic flux pass of out or pole is longer that of the inner poles. This paper proposes a CLPM of completely new construction, in which the field magnetic flux and the armature magnetic flux are perpendicularly intersecting each other as a result of a restructured magnetic circuit. This new CLPM has the same magnetic field as the stepping motor, and has the distinctive characteristic of being available in a multi-phase design as well as the conventional two phase design. A five phase ten pole CLPM was experimentally manufactured and was measured the static thrust to identify its basic characteristics. The experiment confirmed the theory that the torque did not differ from phase to phase and that controllability equal to that of the stepping motor was obtainable. The CLPM we proposed here is effective as an alternate linear electromagnetic actuator for electrical servos of air actuators such as air cylinderes.
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