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9 July 2018 Stability study of the multi-object photogrammetric platform for optical fiber units
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Abstract
Metrology Camera System (MCS) was designed to make a closed-loop control of the optical fiber position in Fiber Positioning System (FPS) on the focal plate of the LAMOST. The stability of the metrology platform is the key factor to the quality of camera shooting. A precise adjustable mechanism was designed in this paper to achieve the platform’s pitching and horizontal rotation adjustment. And also a vibration isolation system using Magnetic Negative Stiffness (MNS) and positive spring in parallel was designed to decrease the effect of vibration, which was caused by the multiple complex vibration loads existing in the working environment, on the platform. Furthermore, an air conditioning system using the semiconductor refrigerator and resistance heater was designed to ensure working temperature of the camera and lens in extreme temperature environments. The simulation results showed that these designs were effective to improve the stability of the metrology system
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Houxi He, Jianping Wang, Jiaru Chu, Hongzhuan Hu, Zengxiang Zhou, and Zhigang Liu "Stability study of the multi-object photogrammetric platform for optical fiber units", Proc. SPIE 10702, Ground-based and Airborne Instrumentation for Astronomy VII, 107027F (9 July 2018); https://doi.org/10.1117/12.2311789
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