Stepping motor control apparatus

Details Stepping motor control apparatus Stepping motor control apparatus

1983-07-26

1985-01-29

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2904

Patent

active

044968914

ABSTRACT:
A frequency of a power supply applied to a stepping motor changes in accordance with a predetermined program to control the stepping motor such that a predetermined rotational speed of the motor is quickly obtained without generating noise. The power supply frequency is abruptly and linearly increased or decreased within an initial predetermined time interval. A high accelerating or decelerating torque is applied to the stepping motor to obtain a first rotational speed for a short period of time. Thereafter, the power supply frequency is exponentially decreased or increased within a final predetermined time interval to obtain a second rotational speed at which the noise level is low.

REFERENCES:
patent: 4333045 (1982-06-01), Oltendorf
IBM Technical Disclosure Bulletin, vol. 17, No. 11, Apr. 1975, G. P. Check et al., "Programmable Stepper Motor Control".

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