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Proceedings Paper

Wideband electronic block of laser interferometric system for measurements of quick-changing angle of scanner rotor rotation
Author(s): Viktor P. Bessmel'tsev; V. N. Burnashov
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Paper Abstract

The most simple interferometric systems of the `direct current' have relatively low maximum of permissible velocity of displacement of interferometer reflectors because of inability of providing of shift of phase of photoreceiver output signals equal to (pi) /2 for this velocity. We developed electronic block for interferometric system of `direct current', which doesn't impose significant restrictions on the velocity characteristics. When frequency f of photoreceiver output signals exceeds chosen reference frequency fr equals 100 divided by 200 kHz, the sign of velocity is stored and is used in process of measurements for count pulses while f > fr. This method doesn't demand the shift of signal phases to be equal to (pi) /2 for the normal performance of block. The analysis of the results of joint processing of output signals of photoreceivers shows that frequency of output and input signals of photo-receiver may be considered as signed value, which sign is determined by the displacement direction of one of interferometer reflectors.

Paper Details

Date Published: 23 August 1996
PDF: 6 pages
Proc. SPIE 2868, Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications, (23 August 1996); doi: 10.1117/12.248650
Show Author Affiliations
Viktor P. Bessmel'tsev, Institute of Automation and Electrometry (Russia)
V. N. Burnashov, Institute of Automation and Electrometry (Russia)


Published in SPIE Proceedings Vol. 2868:
Second International Conference on Vibration Measurements by Laser Techniques: Advances and Applications
Enrico Primo Tomasini, Editor(s)

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