The drag-free control design and in-orbit experimental results of “Taiji-1”
Zhi-Qiang Hu, Pengcheng Wang, Jianfeng Deng, Zhiming Cai, Zhi Wang, Zuolei Wang, Jinpei Yu, Yue-Liang Wu, Qi Kang, Huawang Li, Yonghe Zhang
Abstract
Taiji is China’s spaceborne gravitational wave (GW) detecting project, which is designed to detect GW sources ranging from 0.1mHz to 1Hz. Taiji-1, launched on 31 August 2019, is a pilot study mission to prepare necessary technology for Taiji pathfinder. Two major technology units were tested on Taiji-1: Optical Metrology System and Drag-free Control System (DFCS). In this paper, we try to illustrate the design of DFCS; the implementation strategy of experiment and the first results of in-orbit experiment. The disturbance reduction capability of Taiji-1’s DFCS is demonstrated by the in-orbit experimental performance analysis.