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Proceedings Paper

The LQG/LTR controller design for miniaturized infrared stabilizing platform
Author(s): Renxin Xiao; Tao Li; Pinyi Zhang; Xianguang Jia; Ying Qin; Chunqiao Xian
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Paper Abstract

In order to overcome the process disturbance and measurement noise brought by the low-cost miniaturized infrared stabilizing platform, linear-quadratic-Gaussian with loop-transfer-recovery (LQG/LTR) theory is proposed for the design of stabilizing controller to improve performance of the platform. The state-space model representing the dynamics of stabilizing platform has been developed. Based on the model, state variables are estimated using Kalman-filter and then the LQG controller is designed. LTR methodology is carried out to recovery the loop transfer of LQR and compensate for the deficiency of worse stability robustness. The well-designed miniaturized infrared stabilizing platform is simulated in both frequency-domain and time-domain. The results show that there are many required characteristics in the stabilizing platform designed with the proposed method. It has good disturbance rejection and noise-free, which enhances the stability robustness. It can acquire wide bandwidth that brings about the faster output response. On the basis of the design it is convenient to implement the infrared tracking platform with zero steady-error.

Paper Details

Date Published: 8 September 2011
PDF: 7 pages
Proc. SPIE 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, 81931B (8 September 2011); doi: 10.1117/12.899751
Show Author Affiliations
Renxin Xiao, Kunming Univ. of Science and Technology (China)
Tao Li, Kunming Univ. of Science and Technology (China)
Kunming Shipbuilding Equipment Co., Ltd. (China)
Pinyi Zhang, Kunming Institute of Physics (China)
Xianguang Jia, Kunming Univ. of Science and Technology (China)
Ying Qin, Kunming Univ. of Science and Technology (China)
Kunming Shipbuilding Equipment Co., Ltd. (China)
Chunqiao Xian, Kunming Univ. of Science and Technology (China)
Kunming Shipbuilding Equipment Co., Ltd. (China)


Published in SPIE Proceedings Vol. 8193:
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications
Jeffery J. Puschell; Junhao Chu; Haimei Gong; Jin Lu, Editor(s)

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