1 February 1988 Control Of Low Inertia Galvanometers For High Precision Laser Scanning Systems
Author Affiliations +
Optical Engineering, 27(2), 272104 (1988). doi:10.1117/12.7976653
Abstract
A high precision controller used to accurately drive low inertia galvanometer scanners is presented. Drift errors introduced by the galvanometer position sensor and its electronic driving circuit are compensated using two synchronization photodiodes or phototransistors. The effect of the temperature is analyzed, and comparisons are made with the conventional method of using an analog-to-digital converter to read the signal directly from the position sensor. Absolute accuracy of 10-5 is measured for a change of 10°C. This accuracy is limited to 10-2 when the galvanometer position sensor is used directly. Nonlinearity variations are negligible.
Francois Blais, "Control Of Low Inertia Galvanometers For High Precision Laser Scanning Systems," Optical Engineering 27(2), 272104 (1 February 1988). http://dx.doi.org/10.1117/12.7976653
JOURNAL ARTICLE
7 PAGES


SHARE
KEYWORDS
Control systems

Laser scanners

Laser systems engineering

Position sensors

Electronic circuits

Photodiodes

Phototransistors

RELATED CONTENT

Modular agents for robot navigation
Proceedings of SPIE (August 20 1993)
Ultrathin oxide (SiOx) grown on HF-treated silicon
Proceedings of SPIE (February 01 1992)
Workstation-based solar/stellar adaptive optics system
Proceedings of SPIE (July 07 2000)
Low-dark current 1024x1280 InGaAs PIN arrays
Proceedings of SPIE (June 24 2014)
Handwritten Persian digit recognition by a structural method
Proceedings of SPIE (December 22 1999)

Back to Top