Title :
High-resolution position sensor based on two sensing elements
Author :
Haslett, J.W. ; Trofimenkoff, F.N. ; Nordquist, S.E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Calgary Univ., Alta., Canada
fDate :
6/1/1993 12:00:00 AM
Abstract :
A high-resolution optical position sensor based on two sensing elements is described. The important system nonlinearities and error sources are identified, and correction methods are presented. An autozeroing scheme is employed to obtain an accurate center point and to reduce the effects of temperature variations and component tolerances on the overall system. The predicted results are verified experimentally using commercial parts
Keywords :
optical sensors; position measurement; autozeroing; center point; component tolerances; correction; error sources; nonlinearities; optical position sensor; sensing elements; temperature variations; Dielectric materials; Dielectric measurements; Equations; Optical arrays; Optical sensors; Optical waveguides; Performance evaluation; Permittivity measurement; Sensor systems; Voltage;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
