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Optical Engineering • Open Access

Combined line-of-sight error and angular position to generate feedforward control for a charge-coupled device–based tracking loop
Author(s): Tao Tang; Huaxiang Cai; Yongmei Huang; Ge Ren

Paper Abstract

A feedforward control based on data fusion is proposed to enhance closed-loop performance. The target trajectory as the observed value of a Kalman filter is recovered by synthesizing line-of-sight error and angular position from the encoder. A Kalman filter based on a Singer acceleration model is employed to estimate the target velocity. In this control scheme, the control stability is influenced by the bandwidth of the Kalman filter and time misalignment. The transfer function of the Kalman filter in the frequency domain is built for analyzing the closed loop stability, which shows that the Kalman filter is the major factor that affects the control stability. The feedforward control proposed here is verified through simulations and experiments.

Paper Details

Date Published: 15 October 2015
PDF: 5 pages
Opt. Eng. 54(10) 105107 doi: 10.1117/1.OE.54.10.105107
Published in: Optical Engineering Volume 54, Issue 10
Show Author Affiliations
Tao Tang, Institute of Optics and Electronics (China)
Huaxiang Cai, Institute of Optics and Electronics (China)
Yongmei Huang, Institute of Optics and Electronics (China)
Ge Ren, Institute of Optics and Electronics (China)


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