Electricity: motive power systems – Positional servo systems – With particular motor control system responsive to the...
Patent
1984-12-10
1986-10-07
Duggan, Donovan F.
Electricity: motive power systems
Positional servo systems
With particular motor control system responsive to the...
310 13, 310 27, 318135, H02K 4100
Patent
active
046161538
ABSTRACT:
There is disclosed a closed-loop, linear position servomotor. The servomotor includes a tubular armature disposed within a tubular stator in which the stator includes, radially disposed throughout the shell thereof, a plurality of magnetically symmetric field magnets, each having its magnetic axis directed to the radial center of the stator and armature. The stator further includes a plurality of symmetric, longitudinally disposed alternating current excitation windings, the longitudinal extent of such windings corresponding to the extent of change in linear position of the servomotor. The armature of the servomotor has a non-magnetic substrate upon which is longitudinally wound high current, direct current windings, these windings comprising the primary windings of the servomotor, with the excitation windings of the stator comprising the secondary windings of the motor. Further provided is a subsystem for sensing the position of the armature relative to the stator and, in addition, feedback means for communicating to computing means, the output of said armature position sensing subsystem and, after processing, transmitting a control signal to said excitation windings to effectuate control of the armature position relative to the stator.
REFERENCES:
patent: 3417268 (1968-12-01), Lace
patent: 3439198 (1967-04-01), Lee
patent: 3586891 (1971-06-01), Applequist
patent: 3751693 (1973-08-01), Gabor
patent: 3917987 (1978-11-01), Inoue
patent: 4163911 (1979-08-01), Simes et al.
Duggan Donovan F.
Silverman M. K.
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