...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Aerospace science and technology >Electric sail trajectory correction in presence of environmental uncertainties
【24h】

Electric sail trajectory correction in presence of environmental uncertainties

机译：存在环境不确定性时的电动帆轨迹校正

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

An Electric Solar Wind Sail (E-sail) is an innovative propellantless propulsion system that generates a propulsive acceleration by exchanging momentum with the solar wind charged particles. Optimal E-sail trajectories are usually investigated by assuming an average value of the solar wind characteristics, thus obtaining a deterministic reference trajectory. However, recent analyses have shown that the solar wind dynamic pressure should be modeled as a random variable and an E-sail-based spacecraft may hardly be steered toward a target celestial body in an uncertain environment with just an open-loop control law. Therefore, this paper proposes to solve such a problem with a combined control strategy that suitably adjusts the grid electric voltage in response to the measured value of the dynamic pressure, and counteracts the effects of the solar wind uncertainties by rectifying the nominal trajectory at suitably chosen points. The effectiveness of such an approach is verified by simulation using two-dimensional transfer scenarios. (C) 2019 Elsevier Masson SAS. All rights reserved.
机译：电动太阳风帆（E-sail）是一种创新的无推进剂推进系统，该系统通过与太阳风带电粒子交换动量来产生推进加速。通常通过假设太阳风特征的平均值来研究最佳的E帆轨迹，从而获得确定的参考轨迹。但是，最近的分析表明，应该将太阳风动压力建模为随机变量，并且仅凭开环控制定律，就很难在不确定的环境中将基于电子帆的航天器转向目标天体。因此，本文提出了一种组合控制策略来解决该问题，该策略可以根据动压的测量值来适当地调整电网电压，并通过在适当选择的条件下校正名义轨迹来抵消太阳风不确定性的影响。点。通过使用二维传输方案进行仿真，可以验证这种方法的有效性。 （C）2019 Elsevier Masson SAS。版权所有。

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