Electricity: motive power systems – Reciprocating or oscillating motor – Energizing winding circuit control
Patent
1974-10-07
1977-03-08
Scott, James R.
Electricity: motive power systems
Reciprocating or oscillating motor
Energizing winding circuit control
318254, H02K 2900
Patent
active
040114872
ABSTRACT:
An electric motor incorporating an internally powered DC magnet armature. The motor includes a field winding powered from a DC source but polarity controlled to produce an advancing magnetic field. Power is delivered from a DC source to the field windings by current amplifiers. The amplifier input is controlled by the signals from an optical encoder sensor. The encoder sensor detects the passage of light coded segments on an optical encoder disc rotating with the armature. The relative position of the encoder sensor determines the direction of rotation. The power output of the motor is varied by a variable pulse length generator which converts the pulses from the encoder sensors into a train of pulses of variable length.
REFERENCES:
patent: 2731592 (1956-01-01), Federn
patent: 3345547 (1967-10-01), Dunne
patent: 3569804 (1971-03-01), Studer
patent: 3581173 (1971-05-01), Hood et al.
patent: 3706924 (1972-12-01), Adler
patent: 3764869 (1973-10-01), Woodbury
patent: 3794895 (1974-02-01), Coupin et al.
patent: 3896357 (1975-07-01), Tanikoshi
patent: 3906320 (1975-09-01), Doemen
patent: R28358 (1975-03-01), Sommeria
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