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

1987-11-04

1989-05-16

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 356323, 356325, H02P 800

Patent

active

048313190

ABSTRACT:
A method for the phase synchronization of equipment controlled by stepping drives, especially optical modulating systems for multiple-beam spectral photometers. Each time that the equipment is started up, a reference signal is made synchronous with a synchronizing signal which is derived from a sensor signal of the apparatus which is locked in phase with the intelligence signal. For a purely electrical correction the phasing between the intelligence signals and the synchronizing signal is set once. In the event of a phasing error between the synchronizing signal and the reference signal the reference signal is reset.

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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