Design of a high-performance optical system for angular position measurement: optical and electronic strategies for uncertainty reduction

A high-performance optical system to reduce measuring errors and uncertainty in angular encoders is presented. We propose a reading optical head, which exploits a lens system to improve the speed of the beam crossing the photodetector and a quadrant photodiode to perform a zero-crossover acquisition...

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Veröffentlicht in:	IEEE transactions on instrumentation and measurement 2005-10, Vol.54 (5), p.2075-2081
Hauptverfasser:	Rovati, L., Bonaiuti, M., Pavan, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Angular measurements angular transducers Beams (radiation) Coders Electronics Encoders Extraterrestrial measurements Glass Gratings Instrumentation Lenses Optical design optical encoders optical measurements Optical sensors Photodetectors Position measurement Reduction Shape measurement Stimulated emission Timing Uncertainty zero-crossover technique
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Beschreibung
Zusammenfassung:	A high-performance optical system to reduce measuring errors and uncertainty in angular encoders is presented. We propose a reading optical head, which exploits a lens system to improve the speed of the beam crossing the photodetector and a quadrant photodiode to perform a zero-crossover acquisition of the timing information.
ISSN:	0018-9456 1557-9662
DOI:	10.1109/TIM.2005.854256