Wang, H.; Zhou, Y.; Jiang, X.; Zuo, X.; Chen, M. Optimization of Thermal Control Design for Aerial Reflective Opto-Mechanical Structure. Sensors2024, 24, 1194.
Wang, H.; Zhou, Y.; Jiang, X.; Zuo, X.; Chen, M. Optimization of Thermal Control Design for Aerial Reflective Opto-Mechanical Structure. Sensors 2024, 24, 1194.
Wang, H.; Zhou, Y.; Jiang, X.; Zuo, X.; Chen, M. Optimization of Thermal Control Design for Aerial Reflective Opto-Mechanical Structure. Sensors2024, 24, 1194.
Wang, H.; Zhou, Y.; Jiang, X.; Zuo, X.; Chen, M. Optimization of Thermal Control Design for Aerial Reflective Opto-Mechanical Structure. Sensors 2024, 24, 1194.
Abstract
To improve the adaptability of aerial reflective opto-mechanical structures to low-temperature environments, an optimized thermal control design is proposed. Firstly, the relationship be-tween conventional heating methods and axial/radial temperature differences of mirrors with different shapes is analyzed. Based on heat transfer analyses, it is pointed out that optimized thermal control design is necessary to ensure the temperature uniformity of the fused silica mirror and take into account the temperature level when working in low temperature environ-ments. A thermal control scheme based on temperature negative feedback variable power zone heating is proposed for the characteristics of aerial electro-optics systems. Using the thermal control scheme at low temperatures ensures that the average temperature of the mirror fluctu-ates slowly and slightly around 20℃. At the same time, the temperature differences within a mirror and between the primary mirror and the secondary mirror can be controlled within 5℃. Thereby, satisfactory image quality is obtained.
Keywords
Opto-mechanical structure; Optimized thermal control; Temperature uniformity; Image quality
Subject
Engineering, Other
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.
