Performance improvement of the Giant Steerable Science Mirror prototype: calibration, added-on damping treatment, and warping harness
Performance improvement of the Giant Steerable Science Mirror prototype: calibration, added-on damping treatment, and warping harness
复制标题
巨型可操纵科学镜原型的性能改进：校准、附加阻尼处理和翘曲线束
DOI：
10.1364/ao.56.010009
复制
发表时间：
2017
期刊：
影响因子：
1.9
通讯作者：
Wang L.
中科院分区：
文献类型：
--
作者：
An Q.-C.;Zhang J.-X.;Yang F.;Zhao H.-C.;Wang L.
巨型可引导科学反射镜(GSSM)是30米望远镜的第三级反射镜，旨在满足复杂的要求。校准、附加减震处理和翘曲线束将降低成本，以满足这些严格的要求。利用激光跟踪器和球面反向反射器(SMR)对GSSM原型(GSSMP)进行了标定。使用非均匀分布的SMR将降低系统计量误差。研究了输入激励与虚拟镜面响应之间的频率响应函数，实现了调谐质量阻尼器的设计，并将调谐质量阻尼器作为阻尼器添加到GSSMP上，以改善建立时间和跟踪性能。最后，利用Zernike模和弯曲模相结合的翘曲线束，放宽了GSSM对低阶镜面像差的要求。
The Giant Steerable Science Mirror (GSSM), the tertiary mirror of the Thirty Meter Telescope, is designed to meet complicated requirements. Calibration, added-on damping treatment, and warping harness will lower the cost to meet those strict requirements. A laser tracker and sphere-mounted retro-reflector (SMR) were used to calibrate the GSSM prototype (GSSMP). Use of non-uniform distribution SMRs will lower the systematic metrology error. The frequency response function between input excitation and dummy mirror responses is investigated to realize the design of tuned mass damping, which will be added on the GSSMP as a damping treatment to improve settling time and tracing performance. Finally, we utilized the warping harness, combining Zernike mode and bending mode, to relax the requirements of GSSM for low-order mirror figure aberrations.