...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Aircraft >Trim State Discovery with Physical Constraints
【24h】

Trim State Discovery with Physical Constraints

机译：具有物理约束的修剪状态发现

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

Failure or damage events that degrade performance pose significant risk to aircraft in flight. Adaptive control and system identification may stabilize a damaged aircraft, but identified models may be valid only near each local operating point This paper presents a novel guidance strategy designed to discover a set of feasible flight states sufficient to enable a safe landing given an unknown degradation event Rather than persistently exciting the aircraft with the potential to cause further damage, the aircraft may instead be progressively guided through a sequence of trim states that are stabilizable given local envelope estimates. The proposed guidance strategy progressively explores trim state space rather than three-dimensional physical space, identifying a set of low-speed gentle-descent trim states appropriate for landing approach. A potential field method is adapted to steer exploration through trim state space, modeling envelope constraint boundaries as obstacles and desirable approach trim states as attractors. Identified paths through trim state space may present physical-space conflicts such as flight into terrain. To cope, the family of trajectories emanating from the current trim state is propagated in physical space to identify and eliminate physical conflicts. F-16 aileron and rudder jam performance degradation scenarios are presented, showing that the trim state discovery algorithm can effectively explore trim state space without violating vehicle performance or environmental constraints.
机译：降低性能的故障或损坏事件会对飞行中的飞机造成重大风险。自适应控制和系统识别可以使受损飞机稳定下来，但是所识别的模型可能仅在每个本地操作点附近才有效。本文提出了一种新颖的制导策略，旨在发现一组可行的飞行状态，足以在发生未知降级事件的情况下安全着陆与其持续激发飞机以致可能造成进一步损坏，不如将飞机逐步引导通过一系列调整状态，这些调整状态在给定局部包络线估计的情况下是稳定的。拟议的制导策略逐步探索修整状态空间而不是三维物理空间，从而确定一组适合降落进近的低速缓降修整状态。势场方法适用于引导在修整状态空间中进行勘探，将包络约束边界建模为障碍物并将所需的进近修整状态建模为吸引子。通过修剪状态空间的确定路径可能会出现物理空间冲突，例如飞入地形。为了应对，从当前修整状态发出的轨迹族在物理空间中传播，以识别和消除物理冲突。提出了F-16副翼和方向舵卡塞性能下降的情况，表明配平状态发现算法可以有效探索配平状态空间，而不会违反车辆性能或环境约束。

著录项

  • 来源
    《Journal of Aircraft》 |2015年第1期|90-106|共17页
  • 作者

    Guoxing Yi; Jiapeng Zhong; Ella M. Atkins; Changhong Wang;

  • 作者单位

    Harbin Institute of Technology, 150001 Harbin, People's Republic of China;

    Harbin Institute of Technology, 150001 Harbin, People's Republic of China;

    University of Michigan, Ann Arbor, Michigan 48105;

    Harbin Institute of Technology, 150001 Harbin, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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