Hall motor control system

Details Hall motor control system Hall motor control system

1976-03-05

1977-09-27

Hohauser, Herman

Electricity: motive power systems

Switched reluctance motor commutation control

318138, 318439, H02K 2900

Patent

active

040514200

ABSTRACT:
This specification discloses a Hall motor control system in which Hall elements detect the position of a rotor comprising a permanent magnet to switch over driving currents flowing to driving coils. Induced voltages produced in the driving coils or the voltage detecting coils by rotation of the motor are synthesized by a diode, and the resultant voltage is level-shifted by a level shift circuit including a transistor, and then compared with a reference speed voltage. To control the input to the Hall elements by the comparison output and provide a constant speed of rotation, there are provided temperature compensating means formed by diodes in the base circuit of the transistor of the level shift circuit and in the reference speed voltage circuit, respectively.

REFERENCES:
patent: 3839661 (1974-10-01), Wada
patent: 3898544 (1975-08-01), Tanikoshi
patent: 3916272 (1975-10-01), Grunleitner

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