Open AccessError analysis of four-quadrant-based tracking sensor when dead zone is inevitable
Author(s) -
Xiaoyu Ma,
Jie Mu,
Congjun Rao
Publication year - 2012
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.61.072903
Subject(s) - quadrant (abdomen) , centroid , tracking (education) , detector , tracking error , computer science , physics , optics , artificial intelligence , medicine , psychology , pedagogy , control (management) , pathology
Based on the basic principle of four-quadrant-based tracking sensor, the energy detecting rate, centroid detecting error and the displacement sensitivity of four-quadrant detector caused by noise or dead zone are analyzed in detail. The tracking error formula of four-quadrant-based tracking senor is put forward theoretically and verified experimentally. The results show that when the noises are constant, the tracking error of four-quadrant-based tracking senor depends on the ration between the width of Gauss facula and the width of dead zone of four-quadrant detector.