灵活发射车辆的振动控制使用纤维布拉格格式传感器阵列
Bartel van der Veek1, Hector Gutierrez2, Brian Wise2
1Department of Electrical and Computer Engineering, Florida Institute of Technology, Melbourne, FL 32901, USA.
Sensors (Basel, Switzerland)
|January 11, 2025
概括
这项研究提出了一种新的方法,可以使用纤维布拉格格 (FBG) 传感器实时控制结构振动. 开发的控制器显著降低了发射车测试物品中的振动,证明了其在航空航天应用中的有效性.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统 控制系统
- 结构动力学 结构动力学
背景情况:
- 机械振动可能会损害控制系统的稳定性,并损坏发射器.
- 现有的控制系统经常假设刚体动力学,忽略了关键的振动效应.
- 结构共振和振动负载造成的疲劳带来了重大风险.
研究的目的:
- 通过纤维布拉格格 (FBG) 传感器测量来研究一种实时控制结构振动的方法.
- 开发和验证基于模型的坚固控制器,以最大限度地减少发射车测试物品中的振动.
- 评估控制器在减少关键结构模式中的峰值-峰值振动方面的性能.
主要方法:
- 设计和制造了一个模拟发射车动态的规模测试物品.
- 使用有限元分析来确定模态频率.
- 开发了一个包括频率响应,推进器动态和传感器矩阵在内的综合模型.
- 设计了一个基于模型的强大控制器,利用FBG传感器数据来控制冷气执行器.
主要成果:
- 控制器在第一种模式下实现了94%的峰值-峰值振动减少.
- 观察到第二种模式的峰值-峰值振动减少了80%.
- 通过对测试物品进行模拟和实验,验证了控制器的性能.
结论:
- 提出的基于FBG的控制方法有效地将发射车测试物体的结构振动降到最低.
- 开发的控制器表现出显著的减振能力,增强结构完整性和控制系统稳定性.
- 这种方法为航空航天结构中的实时振动控制提供了一个有希望的解决方案.
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