刚性航天器的动态事件触发式故障耐受控制,具有规定的性能
Peng Cheng1, Wenjun Luo1, Jason J R Liu1
1Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macau, China.
ISA transactions
|November 13, 2025
概括
本研究引入了固定时间干扰观察器 (DO) 和动态事件触发故障耐受控制 (DETFTC) 用于航天器态度跟踪. 该方法确保了精确的控制,尽管在有限的时间内出现故障和干扰.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统理论 控制系统理论
- 机器人技术 机器人技术 机器人技术
背景情况:
- 太空飞船的态度控制对于任务的成功至关重要.
- 执行器故障,参数不确定性和环境干扰带来了重大挑战.
- 现有的控制方法经常在快速融合和干扰拒绝方面扎.
研究的目的:
- 开发一种基于固定时间干扰观察员 (DO) 的动态事件触发式容错控制 (DETFTC) 框架.
- 为了实现在各种不确定性和故障下对刚性航天器态度跟踪的规定的性能.
- 为了尽量减少控制更新,同时确保快速而精确的态度稳定.
主要方法:
- 建议使用固定时间干扰观察员 (DO) 准确估计一次性干扰.
- 动态事件触发的容错控制 (DETFTC) 策略旨在优化控制信号传输.
- 固定时间性能函数与障碍Lyapunov函数的集成确保了跟踪错误的有限时间融合.
主要成果:
- 拟议的框架保证了所有闭环系统信号的实际固定时间稳定性.
- 态度跟踪错误被限制在预先确定的边界内.
- 实际上,Zeno的行为被排除在外,确保实际实施.
结论:
- 开发的DETFTC框架具有固定的时间DO,为航天器态度控制提供了有效的解决方案.
- 该方法证明了对执行器故障,参数不确定性和外部干扰的稳定性.
- 案例研究验证了拟议方法的实际适用性和有效性.
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