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太空机器人传感器噪声改进使用轨道成形
1Sibley School of Mechanical and Aerospace Engineering, Cornell University, Ithaca, NY 14853, USA.
Sensors (Basel, Switzerland)
|January 26, 2024
概括
由于低频振动,太空机器人面临控制挑战. 在理想的条件下,正弦轨迹提高了97.39%的控制精度,优于灵活机器人的传统步进输入.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 控制系统工程 控制系统工程
- 航空航天工程 航空航天工程
背景情况:
- 太空机器人需要轻量化设计,导致低自然频率干扰态度控制.
- 控制结构互动是一个重大挑战,低质量,噪音大的传感器加剧了这一问题.
- 传统的步骤函数轨迹是不连续的,对于这些系统来说并不总是最佳的.
研究的目的:
- 探索用于控制灵活空间机器人的替代输入轨迹.
- 调查侧面轨迹在缓解控制结构相互作用方面的有效性.
- 为了比较不同轨迹在不同噪声条件下的性能.
主要方法:
- 导出灵活的附属物,刚性体和反应轮系统的运动方程.
- 开发一个基准反控制器,用于刚性车身模式和额外的波器,用于灵活模式.
- 自主生成侧面轨迹和实施前鞭伤补偿进行比较.
主要成果:
- 形轨迹方法在没有随机错误的情况下显示出比基线阶段轨迹有97.39%的改善.
- 在理想条件下,形轨迹在最小化控制误差方面被发现是优越的.
- 然而,当传感器噪音和随机错误存在时,传统的步骤轨迹表现更好,而不是形轨迹.
结论:
- 形轨迹为在无噪声环境中控制灵活的太空机器人提供了显著的改进.
- 输入轨迹的选择至关重要,取决于传感器噪声和外部干扰的存在.
- 进一步的研究可能会探索适应性或强大的轨迹生成方法来处理现实世界的空间条件.
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