| 基于MME/EKF算法的卫星质心在轨标定 |
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| 引用本文： | 王本利,廖鹤,韩毅.基于MME/EKF算法的卫星质心在轨标定[J].宇航学报,2010,31(9). |
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| 作者姓名： | 王本利 廖鹤 韩毅 |
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| 作者单位： | 1. 哈尔滨工业大学卫星技术研究所,哈尔滨,150001
2. 航天东方红卫星有限公司,北京,100094 |
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| 基金项目： | 长江学者和创新团队发展计划资助项目 |
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| 摘 要： | 提出了一种基于MME/EKF的卫星质心在轨标定算法。首先以磁力矩器为执行元件给卫星施加一个明显大于干扰力矩的周期性力矩,将静电加速度计的量测信息分解为线性和周期性加速度,并将星敏感器标定后的陀螺仪数据代入MME算法中估计出卫星的角加速度,然后利用EKF算法求解卫星质心的位置。最后进行了数学仿真验证,仿真结果表明该算法不需要卫星的控制输入以及动力学特性信息,便能实现卫星质心较为精确的标定。
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| 关 键 词： | 卫星质心在轨标定 磁力矩器 静电加速度计 星敏感器 陀螺仪 |
On-Orbit Calibration of Satellite Center of Mass Based on MME/EKF Algorithm |
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| WANG Ben-li,LIAO He,HAN Yi.On-Orbit Calibration of Satellite Center of Mass Based on MME/EKF Algorithm[J].Journal of Astronautics,2010,31(9). |
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| Authors: | WANG Ben-li LIAO He HAN Yi |
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| Institution: | WANG Ben-li1,LIAO He1,HAN Yi2(1.Research Center of Satellite Technology,Harbin Institute of Technology,Harbin 150080,China,2.DFH Satellite Co.,Ltd.,Beijing 100094,China) |
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| Abstract: | A method for on-orbit calibration of satellite center of mass based on MME/EKF estimation algorithm is proposed in this paper.The proposed method is embodied into three steps.First,the observation of a electrostatic accelerometer is decomposed into linear and periodic accelerations while a periodic magnetic torque which is more larger than other external torques is applied on satellite.Second,the observation of gyro calibrated by star sensor is used to estimate angular acceleration based on MME.Third,EKF is... |
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| Keywords: | MME/EKF |
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