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Optical Engineering

PID-I controller of charge coupled device-based tracking loop for fast-steering mirror
Author(s): Tao Tang; Jiaguang Ma; Ren Ge
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Paper Abstract

We propose a simple PID (proportional integral differential)-I controller to improve the performance of a CCD-based (charge coupled device) control system for fast steering mirror, which consists of adding an integrator in series to a PID controller, resulting in two integrators in the control loop. The conditions for implementing the PID-I controller into the control system of the fast steering mirror are presented mainly in terms of the closed-loop stability and error attenuation. A model of CCD-based control loop is made to analyze the characteristics of the control loop. Although the error attenuation bandwidth with PID-I controller is a little smaller than that with an integral controller, the error attenuation at low frequency is greatly enhanced. The experimental results are in accordance with the theoretical analysis.

Paper Details

Date Published: 1 April 2011
PDF: 5 pages
Opt. Eng. 50(4) 043002 doi: 10.1117/1.3567059
Published in: Optical Engineering Volume 50, Issue 4
Show Author Affiliations
Tao Tang, Institute of Optics and Electronics (China)
Jiaguang Ma, Institute of Optics and Electronics (China)
Ren Ge, Institute of Optics and Electronics (China)

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