Surface pulse motor

Details Surface pulse motor Surface pulse motor

1986-05-27

1987-11-10

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318685, 318135, 318 37, 318 38, 310 12, G05B 1100

Patent

active

047060077

ABSTRACT:
A surface pulse motor having a stator and a mover is provided such that the stator is made of a magnetic material of a planar configuration with a number of projections formed on a surface thereof at positions corresponding to the intersecting points of a first lattice. The mover is made of electromagnets of predetermined phases, each electromagnet having a number of projections formed on a surface thereof opposing the surface of the stator at a pitch equal to that of the first lattice. When a second lattice which is rotated relative to the first lattice by a predetermined angle is assumed, the electromagnets other than the first phase are displaced from that of the first phase by a distance corresponding to a fraction of the pitch of the first lattice in directions of the coordinate axes of the second lattice, respectively. The are further provided for supporting the mover such that an air gap is maintained between the stator and the mover, and that the electromagnets are movable in combination in the directions of the coordinate axes.

REFERENCES:
patent: 3376578 (1968-04-01), Sawyer
patent: 3457482 (1969-07-01), Sawyer
patent: 4535278 (1985-08-01), Asakawa
patent: 4626749 (1986-12-01), Asakawa

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