Article
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Preserved in Portico This version is not peer-reviewed
Disturbance Observer-Based Anti-shock Controller for Laser Beam Steering Systems
Version 1
: Received: 28 April 2024 / Approved: 29 April 2024 / Online: 29 April 2024 (09:56:15 CEST)
A peer-reviewed article of this Preprint also exists.
Kim, J.-G. Disturbance Observer−Based Anti−Shock Controller for Laser Beam Steering Systems. Appl. Sci. 2024, 14, 4774. Kim, J.-G. Disturbance Observer−Based Anti−Shock Controller for Laser Beam Steering Systems. Appl. Sci. 2024, 14, 4774.
Abstract
This paper presents an approach to improve the robustness of tip-tilt controllers for fast-steering mirror (FSM)-based laser beam steering (LBS) systems in the presence of dynamic disturbances such as external shocks. To this end, we propose the addition of a disturbance observer (DOB)-based anti-shock controller in parallel to the original linear servo control loop to improve its control performance in the presence of external shocks. To increase the tip-tilt control performance against external shocks, the DOB-based control method, which is an improved control method for eliminating nonperiodic disturbances, is implemented in the original tip-tilt control system. Results indicate that the control error of the DOB-based anti-shock controller decreased, resulting in an efficient improvement in its disturbance-rejection performance.
Keywords
laser beam steering; fast-steering mirror; tip-tilt control system; anti-shock controller; disturbance observer
Subject
Engineering, Control and Systems Engineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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