Method and circuit arrangement for the drive of a stepping...

Details Method and circuit arrangement for the drive of a stepping... Method and circuit arrangement for the drive of a stepping...

H - Electricity

02

P

318/17

H02P 8/00 (2006.01) G05B 19/416 (2006.01) H02P 8/04 (2006.01) H02P 8/38 (2006.01)

Patent

CA 1278028

ABSTRACT OF THE DISCLOSURE A method and circuit for driving a stepping motor which is driven by a motor clock output having a time variable frequency. So as to generate the time varying frequency, the constant frequency of a basic clock output is divided by constant first factor and is multiplied by a time variable second factor which is in the range between zero and the first factor. A transfer clock sequence is derived from the basic clock output by a division factor. The second factor is changed by a prescribed increment with the frequency of the transfer clock output at the respective clock times and this prescribed increment determines the frequency change of the motor clock output per clock interval. In this manner, the unavoidable frequency discontinuities can be maintained small and constant over the full frequency range of the motor clock output even without a high frequency of the basic clock output whereby a reliable run-up and a reliable breaking of the stepping motor are assured without stepping errors.

525816

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