Disturbance Observer-Based Anti-Shock Controller for Laser Beam Steering Systems
Source abstract
Abstract
This paper presents an approach for improving 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. The results indicate that the control error of the DOB-based anti-shock controller decreased, resulting in an efficient improvement in its disturbance-rejection performance.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Iterative Learning Control Systems · Adaptive optics and wavefront sensing · Piezoelectric Actuators and Control
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Ground Technology Research Institute, Agency for Defense Development, Daejeon 34186, Republic of Korea
Funding
Government of the Republic of Korea
References (38)
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