无人驾驶直升机的固定时间切换跟踪控制器具有多个约束
Haibo Wang1, Shuang Shi1, Ziyang Zhen1
1College of Automation Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, China.
ISA transactions
|June 26, 2025
概括
本研究引入了无人直升机 (UH) 的固定时间干扰观察器 (FTDO),以确保尽管存在干扰和约束,但仍能追踪轨迹. 新的控制方案保证在有限的时间内精确追踪飞行路径.
科学领域:
- 机器人和控制系统 机器人和控制系统
- 航空航天工程 航空航天工程
- 非线性控制理论 不线性控制理论
背景情况:
- 无人直升机 (UH) 面临着复合干扰和诸如输入和和时间变化的输出限制等多重约束的挑战.
- 在这种复杂的条件下,现有的控制策略往往难以保证有限时间的融合.
- 准确的干扰估计和强大的约束处理对于可靠的超高压操作至关重要.
研究的目的:
- 为6-DOF UH.提出一个固定时间切换跟踪控制方案.
- 解决多种约束,包括输入和和时间变化的输出约束.
- 为了提高轨迹跟踪性能和对复合干扰的稳定性.
主要方法:
- 开发固定时间干扰观察器 (FTDO) 用于复合干扰估计.
- 应用一个改进的固定时间辅助系统来抵消输入和非线性.
- 设计一种新的切换边界保护算法,以有效管理输出约束.
- 实施固定时间切换的位置和态度循环的后退控制方法.
主要成果:
- 拟议的固定时间控制器确保在有限的,预先确定的时间内,独立于初始条件的轨迹跟踪.
- 控制方案有效地处理输入和和时间变化的输出约束.
- 改进的FTDO准确地估计了复合干扰,包括近似误差和外部因素.
- 实验结果验证了针对超高频段开发的固定时间切换跟踪控制方案的有效性.
结论:
- 拟议的固定时间切换跟踪控制方案为复杂的约束和干扰下6DOF UH轨迹控制提供了强大的解决方案.
- 整合FTDO和一种新的切换策略显著提高了跟踪准确性和有限时间趋同.
- 这项研究有助于推进无人驾驶飞行器的自主飞行控制系统.
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