采用TNO混合可变磁阻致动器的自适应次镜的实验室闭环与在轨闭环测试结果
In-lab and On-sky Closed-loop Results of Adaptive Secondary Mirrors with TNO's Hybrid Variable Reluctance Actuators
AI总结：
本研究针对TNO研发的混合可变磁阻致动器自适应次镜，开展实验室与在轨闭环测试，验证其性能满足要求，为新一代高可靠自适应次镜的应用提供支撑。
摘要：
我们对搭载混合可变磁阻致动器的大口径变形镜（DMs）开展了闭环实验室测试。TNO一直在开发这种混合可变磁阻致动器，以支撑新一代更坚固可靠的自适应次镜（ASMs）的研发。与音圈致动器相比，这种新型致动器技术的电流-力转换效率更高，因此可支撑面板更厚的变形镜。在将这项新技术投入天文观测前，有必要明确其控制方式及闭环运行特性。我们使用夏克-哈特曼波前传感器，对三台采用TNO致动器的大口径变形镜（DM3、FLASH和IRTF-ASM-1 ASM）开展了闭环测试；其中波前传感器与实时控制系统是为NASA红外望远镜设施（IRTF）和夏威夷大学2.2米望远镜的自适应次镜研发的。我们对IRTF-ASM-1开展了在轨测试，证实其满足所有性能要求。本工作介绍了实验的实验室搭建方案、驱动这些新型自适应次镜所采用的技术、FLASH与IRTF-ASM-1的实验室闭环测试结果，以及IRTF-ASM-1自适应次镜的在轨闭环测试结果。
英文摘要：
We performed closed-loop lab testing of large-format deformable mirrors (DMs) with hybrid variable reluctance actuators. TNO has been developing the hybrid variable reluctance actuators in support for a new generation of adaptive secondary mirrors (ASMs), which aim to be more robust and reliable. Compared to the voice coil actuators, this new actuator technology has a higher current to force efficiency, and thus can support DMs with thicker facesheets. Before putting this new technology on-sky, it is necessary to understand how to control it and how it behaves in closed-loop. We performed closed-loop tests with the Shack-Hartmann wavefront sensor with three large-format deformable mirrors that use the TNO actuators: DM3, FLASH, and IRTF-ASM-1 ASM. The wavefront sensor and the real-time control systems were developed for the NASA Infrared Telescope Facility (IRTF) and the UH 2.2-meter telescope ASMs. We tested IRTF-ASM-1 on-sky and proved that it meets all of our performance requirements. This work presents our lab setup for the experiments, the techniques we have employed to drive these new ASMs, the results of our closed-loop lab tests for FLASH and IRTF-ASM-1, and the on-sky closed-loop results of IRTF-ASM-1 ASM.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
