High-accuracy electrohydraulic control system for the position and orientation of the primary mirror for a large telescope

• Published in: Journal of the Korean Physical Society Vol. 79; no. 7; pp. 683 - 695
• Main Authors: Li, Yu-Xia, Wang, Jian-Li, Guo, Peng-Fei, Li, Hong-Wen, Cao, Yu-Yan
• Format: Journal Article
• Language: English
• Published: Seoul The Korean Physical Society 01.10.2021; Springer Nature B.V; 한국물리학회
• Subjects: Accuracy; Control systems design; Controllers; Disturbances; Electric control; Hydraulic control; Image quality; Image resolution; Mathematical analysis; Mathematical and Computational Physics; Mathematical models; Misalignment; Orientation; Original Paper - Geophysics and Astrophysics; Particle and Nuclear Physics; Physics; Physics and Astronomy; Position errors; Primary mirrors; Sliding mode control; Telescopes; Theoretical; 물리학; Primary mirror support; Electrohydraulic control system; Large telescope

Due to variations in gravity, temperature, and external disturbances, the optical axes of a telescope’s primary mirrors can shift and, consequently, become misaligned with the light path. Such misalignment significantly reduces image quality; thus, the position and orientation of primary mirror (POP...