شماره ركورد كنفرانس :
4749
عنوان مقاله :
Mathematically Modeling of Imperfect Polarizing-Beam Splitter in Laser Encoders for Automotive Applications
پديدآورندگان :
Olyaee Saeed s_olyaee@srttu.edu Shahid Rajaee Teacher Training University , Gorgani Firoozjah Abdollah Shahid Rajaee Teacher Training University , Ebrahimi Farzane Shahid Rajaee Teacher Training University
كليدواژه :
Jones matrix , nonlinearity error , polarizing , beam splitter , automotive system.
عنوان كنفرانس :
پنجمين كنفرانس بين المللي كنترل، ابزار دقيق و اتوماسيون
چكيده فارسي :
Laser encoders can be used in robotic, control, and automation systems. In this paper, periodic nonlinear error of laser encoder resulting from imperfection of polarizing-beam splitter is mathematically analyzed and modeled by using the Jones matrix analysis for a robotic system. The photocurrents of each photodetector are mathematically obtained and simulated and the nano-displacement of scale grating is calculated by arctangent method. We show that the maximum periodic nonlinear errors resulting from polarizing-beam splitter is 0.07164 rad which is equal to 11.48 nm in displacement, considering 1 µm pitch of gratings.
