Title :
Design of a high-performance optical system for angular position measurement: optical and electronic strategies for uncertainty reduction
Author :
Rovati, Luigi ; Bonaiuti, Matteo ; Pavan, Paolo
Author_Institution :
Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Italy
Abstract :
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.
Keywords :
angular measurement; lenses; measurement errors; measurement uncertainty; photodetectors; photodiodes; position measurement; angular encoders; angular position measurement; angular transducers; electronic strategies; high-performance optical system; lens system; measurement errors; measurement uncertainty; optical encoders; optical measurements; optical strategies; photodetector; quadrant photodiode; reading optical head; timing information; uncertainty reduction; zero-crossover technique; Extraterrestrial measurements; Glass; Gratings; Optical design; Optical sensors; Photodetectors; Position measurement; Shape measurement; Stimulated emission; Timing; Angular measurements; angular transducers; optical encoders; optical measurements; zero-crossover technique;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2005.854256
