基于Warping Harness的半主动光学技术研究

为了提高大型光学红外望远镜主镜面研发的性价比，解决主镜各个子镜面的低阶面形误差校正问题，满足重力、温度和加工误差影响下的镜面面形精度要求，开展基于Warping Harness的半主动光学技术研究。面向国家对大型光学红外望远镜的重大需求，以其子镜镜面支撑系统为研究切入点，充分利用与国际大科学工程——三十米望远镜(TMT)的国际合作平台，并以TMT的巨型可控科学反射镜原理演示验证系统(GSSMP)为实验平台，开展Warping Harness力矩校正系统的理论研究和应用研究，结合Whiffletree被动支撑结构，通过光机热集成分析与标校实验，获得校正面形的响应矩阵，以简洁有效的半主动支撑机构实现望远镜拼接主镜子镜面形低频误差的稳定校正，提升系统建造性价比，解决大型光学红外望远镜所面临的科学问题，服务于国家将来的天文大科学工程。

To improve the cost performance of the main mirror surface of the large optical infrared telescope, solve the problem of correcting low order error correction of the segment mirror figure of the primary mirror, meet the requirements of mirror surface accuracy under the influence of gravity, temperature and manufacturing error, the research of semi-active optical technology based on Warping Harness is carried out. Facing the great demand of the state for large optical infrared telescope, taking the segment mirror supporting system as the breakthrough point, we make full use of the international cooperation platform with Thirty Meter Telescope (TMT) and the Giant Steerable Science Mirror prototype (GSSMP) to develop the theoretical and applied research on Warping Harness torque correction system. Combined with the Whiffletree passive supporting structure, the response matrix of the corrected surface should be obtained through the opto-mechanical and thermal integration analysis and calibration experiment. And then, the stable correction of low frequency error of the segment mirror should be realized under the control of the semi-active optical system with the feature of simplicity and efficiency. The research of the project will improve the cost performance of the system construction, solve the scientific problems faced by the large optical infrared telescope, and serve the future astronomical large scientific engineering of China.