改进的汉默斯坦式歇斯底里模型和复合控制方法用于快速转向反光镜
Kairui Cao1, Zekun Li1, Guanglu Hao1
1National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China.
Micromachines
|June 27, 2025
概括
快速转向镜 (FSM) 使用压电陶,但受到hysteresis非线性的影响. 一个新的修改后的哈默斯坦式 (MHL) 模型和复合控制策略有效地解决了FSM中的这些动态性能问题.
科学领域:
- 航空航天工程 航空航天工程
- 控制系统工程 控制系统工程
- 材料科学 材料科学 材料科学
背景情况:
- 快速转向镜 (FSM) 对于卫星激光通信至关重要,可实现精确的光束定向和跟踪.
- 用于驱动FSM的压电陶,表现出固有的hysteresis非线性,降低了动态性能.
- 现有的速度依赖性歇斯底里和汉默斯坦模型在捕捉复杂的动态行为方面存在局限性.
研究的目的:
- 开发一种先进的模型,用于在压电驱动的FSM中表征hysteresis非线性.
- 提出一种复合控制策略,以减轻歇斯底里对FSM动态性能的不利影响.
- 通过实验测试验证拟议的建模和控制方法.
主要方法:
- 开发了一个改进的哈默斯坦式 (MHL) 模型,集成输入时间延迟,速率依赖性歇斯底里和线性动力学.
- 设计了一种复合控制策略,包括一个前补偿器,一个反向歇斯底里模型和一个PI控制器.
- 进行实验验证,以评估MHL模型和复合控制策略的性能.
主要成果:
- 该MHL模型有效地捕获了广泛的频率范围内的歇斯底里系统的动态特征.
- 复合控制策略显著提高了FSM的指针和跟踪精度,因为它补偿了hysteresis.
- 实验结果证实了拟议的建模和控制方法的有效性.
结论:
- 开发的MHL模型为了解和预测FSM中的歇斯底里提供了一个强大的框架.
- 复合控制策略提供了一种有效的解决方案,用于提高压电驱动的FSM的动态性能.
- 这项研究有助于提高太空应用中的激光通信系统的可靠性和精度.
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