Combined line-of-sight error and angular position to generate feedforward control for a charge-coupled device–based tracking loop

Tao Tang; Huaxiang Cai; Yongmei Huang; Ge Ren

doi:10.1117/1.OE.54.10.105107

15 October 2015 Combined line-of-sight error and angular position to generate feedforward control for a charge-coupled device–based tracking loop

Tao Tang, Huaxiang Cai, Yongmei Huang, Ge Ren

Author Affiliations +

Optical Engineering, Vol. 54, Issue 10, 105107 (October 2015). https://doi.org/10.1117/1.OE.54.10.105107

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.

CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.

Citation Download Citation

Tao Tang, Huaxiang Cai, Yongmei Huang, and Ge Ren "Combined line-of-sight error and angular position to generate feedforward control for a charge-coupled device–based tracking loop," Optical Engineering 54(10), 105107 (15 October 2015). https://doi.org/10.1117/1.OE.54.10.105107

Published: 15 October 2015

ACCESS THE FULL ARTICLE

JOURNAL ARTICLE
5 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY