基于自适应扩展卡尔曼波器的磁力计对旋转弹子进行实时态度估计
Ge Zhang1,2,3, Xiaoming Zhang1,2,3, Lizhen Gao4
1Key Laboratory of Instrument Science and Dynamic Testing Ministry of Education, North University of China, Taiyuan 030051, China.
Micromachines
|November 25, 2023
概括
这项研究引入了自适应扩展卡尔曼波器 (AEKF) 来解决使用地磁数据旋转弹子的态度估计问题. AEKF算法有效地消除了非独特的解决方案,并在具有挑战性的飞行条件下提高了准确性.
科学领域:
- 地质物理学和太空物理学 空间物理学
- 航空航天工程 航空航天工程
- 控制系统工程 控制系统工程
背景情况:
- 地磁态度测量系统具有成本效益和紧性,但对于高流动性导向旋转弹子来说,它们缺乏非独特的解决方案.
- 传统的单时代算法在弹射飞行过程中难以解决双解决方案问题.
研究的目的:
- 提出和验证一个自适应扩展卡尔曼波器 (AEKF) 态度估计算法,用于使用地磁向量信息旋转弹子.
- 解决非唯一解决方案问题并提高态度确定准确性.
主要方法:
- 基于射弹运动特征的卡尔曼状态系统和非线性观测方程的开发.
- 在AEKF框架内实时曲角度校正和适应性参数更新.
- 通过模拟和实验验证进行验证.
主要成果:
- 成功地消除了传统方法中常见的双解决方案模糊性.
- 显著提高了斜率和滚动角度估计的准确性.
- 提供精确的立场角速率估计和减轻磁性干扰影响.
结论:
- 通过使用地磁数据,AEKF算法提供了一个强大的解决方案,用于在使用地磁数据的导向旋转弹子中进行态度估计.
- 证明了改进的准确性,可靠性和对磁性干扰的弹性.
- 对基于地磁的态度测量和导航应用具有重大潜力.
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