Linear motor

Details Linear motor Linear motor

1981-05-18

1984-07-17

Dobeck, B.

Electricity: motive power systems

Linear-movement motors

310 12, H02K 4103

Patent

active

044608551

ABSTRACT:
A linear motor comprises an armature and a stator each adapted to provide a sequence of North and South poles along the length of the motor. The pole pitch of the stator magnets is different from that of the armature coils such that with appropriate energization of the coils this difference in pole pitch and stator can result in a net thrust of the armature relative to the stator in a desired direction at any location within a range of relative longitudinal positions of the armature and stator. The motor may be subject to closed loop velocity--and/or positional control and means are disclosed to achieve this. Several variations in pole configurations and means of controlling the coil energization are disclosed.

REFERENCES:
patent: 342666 (1886-05-01), Williams
patent: 405194 (1889-06-01), Williams
patent: 2483895 (1949-10-01), Fisher
patent: 2640955 (1953-06-01), Fisher
patent: 4151447 (1979-04-01), Von der Heide et al.
patent: 4315171 (1982-02-01), Shaeffer

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