Method for reducing the consumption of a stepping motor and devi

Details Method for reducing the consumption of a stepping motor and devi Method for reducing the consumption of a stepping motor and devi

1982-09-29

1984-08-28

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 368157, H02K 2902

Patent

active

044686021

ABSTRACT:
The present invention concerns a method and a device for reducing the consumption of a stepping motor by automatically adapting the duration of each drive pulse supplied to said motor to the mechanical load that its rotor is to drive.
The method comprises forming each drive pulse by a series of elementary pulses separated by interruption periods, and determining the mechanical load by measuring, during said interruption periods, a parameter which is representative of the variation in the voltage induced in the winding (11a) of the motor by the rotary movement of the rotor.

REFERENCES:
patent: 4192131 (1980-03-01), Hojokawa et al.
patent: 4216648 (1980-08-01), Maire
Crider, C. H. & Frankeny, R. F., "Current Tracking Chopper Motor Driver", IBM Technical Disclosure Bulletin, vol. 23, No. 4, Sept. 1980, pp. 1303-1304.

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