Method for the phase synchronization of step-drive controlled eq

Details Method for the phase synchronization of step-drive controlled eq Method for the phase synchronization of step-drive controlled eq

1987-11-10

1989-05-23

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 356323, 356325, H02P 800

Patent

active

048333859

ABSTRACT:
A method for the phase synchronization of step-drive-controlled equipment, in particular of optical modulation devices for multiple-beam spectrophotometers.
Starting with the phase comparison of a synchronization signal formed from a sensor signal produced by a fixed phase difference from information signals of the device, the phase relationship of the commutator signals of the stepping motor is controlled with a predetermined reference signal.

REFERENCES:
patent: 4281897 (1981-08-01), Fletcher
patent: 4305663 (1981-12-01), Perkins et al.
patent: 4386852 (1983-06-01), Cassidy et al.

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