Speed regulation system for DC motors with hall generators

Details Speed regulation system for DC motors with hall generators Speed regulation system for DC motors with hall generators

1975-07-14

1976-12-21

Dobeck, B.

Electricity: motive power systems

Reciprocating or oscillating motor

Energizing winding circuit control

318254, H02K 2900

Patent

active

039991083

ABSTRACT:
A speed regulation system for DC motors of the type comprising a rotor having magnetic poles of opposite polarities, a stator having at least one pair of flux-producing windings positioned in torque producing relation with the rotor, and Hall generators positioned in fixed relation to the stator and angularly spaced apart from each other in magnetic relation to the rotor so as to sense the magnitude of the rotor flux density as a function of the angular position of the rotor. The speed regulation system comprises a circuit for detecting the frequency of the output signals of the Hall generators so as to generate the pulse signals representing the peak values of the output signals, a phase shifter for shifting the phase of the pulse signals, and a wave shaping circuit for generating the signals with a desired waveform in response to the output signal of the phase shifter. In response to the output signals of the wave shaping circuit a drive circuit for supplying the driving current to the stator windings is controlled, whereby the DC motor may be rotated at a constant speed.

REFERENCES:
patent: 3584280 (1971-06-01), Inagaki
patent: 3743902 (1973-07-01), Perkins
patent: 3743906 (1973-07-01), Torok
patent: 3754175 (1973-08-01), Girault
patent: 3775648 (1973-11-01), Brown

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