Chinese Optics, Volume. 18, Issue 3, 631(2025)
Identification of test mass stiffness based on dual sensitive axis decomposition
Figures & Tables(13)
Fig. 8. Identification curves under different stiffness true values
Table 1. Numerical simulation experiment parameter settings
View tableView in ArticleTable 1. Numerical simulation experiment parameter settings
参数 数值 航天器转动惯量/(kg·m2) diag(450,450,450) TM1刚度/s−2 [1,1,1]×10−7 TM2刚度/s−2 [1,1,1]×10−7 r 1参考状态/m[10sin(2πt/300),0,0]×10−6 r 2参考状态/m[10sin(2πt/300),0,0]×10−6 f d1/(m·s−2)[1,1,1]×10−10 f d2/(m·s−2)[1,1,1]×10−10
Table 2. Parameter settings for measurement noise and execution noise
View tableView in ArticleTable 2. Parameter settings for measurement noise and execution noise
参数 获得途径 高斯白噪声均方差 敏感轴位移/m 星内激光干涉仪 1×10−11 非敏感轴位移/m 惯性传感器 1×10−8 加速度/(m·s−2) 惯性传感器 1×10−12 静电力/(m·s−2) 静电控制回路 1×10−12
Table 3. Parameter identification accuracy
View tableView in ArticleTable 3. Parameter identification accuracy
参数 MAE RMSE Emax k1xx/s−2 3.8726 ×10−91.3753 ×10−81.6792 ×10−9k2xx/s−2 4.5863 ×10−91.4114 ×10−81.7344 ×10−9k1yy/s−2 8.1416 ×10−88.1765 ×10−8未收敛 k2yy/s−2 1.0652 ×10−71.0671 ×10−7未收敛 R/(m·s−2) 1.4004 ×10−142.7194 ×10−141.9547 ×10−13
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Ning-biao TANG, Zhong-guang YANG, Zhi-ming CAI, Zi-ruo FANG, Ye LIU, Hai-ying HU, Hua-wang LI. Identification of test mass stiffness based on dual sensitive axis decomposition[J]. Chinese Optics, 2025, 18(3): 631
Paper Information
Category: Special Column on Space-based Gravitational Wave Detection
Received: Sep. 2, 2024
Accepted: Nov. 8, 2024
Published Online: Jun. 16, 2025
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