DR. ROBERT A LEE, PSY.D.
Psychologist at Van Emburgh Ave, Westwood, NJ

4692678, Sep 8, 1987

Oct 2, 1986

6/916993

Robert E. Lee - Westwood NJ

H02K 4100

318687

The invention relates to a method for controlling a closed loop linear position servo-motor having an armature including a first group of excitation windings and a second group of excitation windings, and a stator including field magnets disposed radially opposite the first winding group, and feedback windings disposed radially opposite the second winding group. The method includes the steps of: applying a positional zero reference to the feedback windings, the zero reference correlating to a nominal zero position of the armature; monitoring time-dependent changes in the electromagnetic coupling between the feedback windings and the second armature winding group, relative to the coupling value of the zero reference; translating the electromagnetic coupling changes into a positional data signal; and reiteratively applying the compensation current to the second winding group to compensate the value of the electromagnetic coupling to positionally regulate the armature in conformance with external program control signals.

4616153, Oct 7, 1986

Dec 10, 1984

6/680137

Robert E. Lee - Westwood NJ

H02K 4100

318687

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.