...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Acta astronautica >Small satellite attitude determination during plasma brake deorbiting experiment
【24h】

Small satellite attitude determination during plasma brake deorbiting experiment

机译：等离子制动解轨道实验中小卫星姿态的确定

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper presents a study on attitude estimation during the Plasma Brake Experiment (PBE) onboard a small satellite. The PBE demands that the satellite be spun at a very high angular velocity, up to 2001deg/g, to deploy the tether using centrifugal force. The spin controller, based on purely magnetic actuation, and the PBE demands accurate attitude estimation for the successful execution of the experiment. The biases are important to be estimated onboard small satellites due to the closely integrated systems and relatively higher interference experienced by the sensors. However, bias estimation is even more important for PBE due to the presence of a high voltage unit, onboard the satellite, that is used to charge the tether and can be the source of interference. The attitude and the biases, when estimated simultaneously, results in an augmented state vector that poses a challenge to the proper tuning of process noise. The adaptation of process noise covariance has, therefore, been studied and analysed for the challenging PBE. It has been observed that adapting the process noise covariance improves the estimation accuracy during the spin -up phase. Therefore, it is very important to use adaptive process noise covariance estimation. (C) 2016 IAA. Published by Elsevier Ltd. All rights reserved.
机译：本文介绍了在小型卫星上进行等离子制动实验（PBE）期间进行姿态估计的研究。 PBE要求卫星以高达2001deg / g的很高角速度旋转，以利用离心力展开系绳。基于纯磁致动的旋转控制器和PBE需要精确的姿态估计才能成功执行实验。由于系统的紧密集成以及传感器所遭受的干扰相对较大，因此在小型卫星上估算偏差非常重要。但是，由于卫星上存在一个高压单元，用于给系绳充电，并且可能成为干扰源，因此偏置估计对于PBE甚至更为重要。当同时估计姿态和偏差时，会导致状态向量增大，从而对过程噪声的正确调整提出了挑战。因此，已经针对具有挑战性的PBE对过程噪声协方差的适应性进行了研究和分析。已经观察到，适应过程噪声协方差可以提高加速阶段的估计精度。因此，使用自适应过程噪声协方差估计非常重要。 （C）2016 IAA。由Elsevier Ltd.出版。保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号