Electric motor drive system

Details Electric motor drive system Electric motor drive system

1976-05-11

1980-02-05

Duggan, Donovan F.

Electricity: motive power systems

Linear-movement motors

310 2, 310 13, 319 49, H02K 4102

Patent

active

041874536

ABSTRACT:
There is disclosed a low mass, low inertia, low inductance armature motor having infinite point resolution and a high force to mass ratio. The basic configuration is a plurality of phase displaced armature windings 90.degree. phase displacement for even spaced increments and optimized linear force preferably on a non-conductive, non-magnetic substrate and sandwiched between an incremental, alternately polarized magnetic field or castellated single polarity pole structure. Each of the phase displaced windings is preferably driven by a simplified totem pole type switching circuit. As a result of the low mass, low inertia, low inductance construction of the armature, greater than one thousand start/stop operations per second are made possible with a high force to mass ratio to permit driving and positioning of loads such as thermal print head drives for line printers, thin film read/write head positioners for both solid and floppy disk memory systems, pen positionings for high speed chart readouts, drives for focal plane shutters and cameras, etc. and the capability of being driven in a loop continuously by terminating the multiple phase windings of the armature at conductor ends on lateral edges of the substrate which may be flexible or rigid.

REFERENCES:
patent: 3084420 (1963-04-01), Burr et al.
patent: 3093762 (1963-06-01), Henry-Baudot
patent: 3097319 (1963-07-01), Henry-Baudot
patent: 3109113 (1963-10-01), Henry-Baudot
patent: 3109114 (1963-10-01), Henry-Baudot
patent: 3136934 (1964-06-01), Henry-Baudot
patent: 3144570 (1964-08-01), Crowley
patent: 3257586 (1966-06-01), Steingroever
patent: 3259768 (1966-07-01), Burr
patent: 3312846 (1967-04-01), Henry-Baudot
patent: 3699371 (1972-10-01), Henry-Baudot

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