设计,分析和实验一种新的可重复的缓冲着陆机制
Daoguang Han1, Dongsheng Zhang1, Jinhua Zhou2
1School of Construction Machinery, Shandong Jiao tong University, Jinan, 250357, China.
Scientific reports
|August 9, 2025
概括
这项研究引入了一个新的PZT驱动的可重复使用的缓冲机制用于月球着陆器,提供快速响应和符合缓冲的缓冲机制. 新设计确保了较小,稳定的加速度变化,以提高可重复使用性和性能.
科学领域:
- 航空航天工程 航空航天工程
- 材料科学 材料科学 材料科学
- 控制系统 控制系统
背景情况:
- 传统的月球着陆缓冲系统依赖于一次性使用的蜂结构.
- 这些系统遭受不可逆转的变形和突然加速变化,限制了可重复使用性.
- 短的着陆时间 (在1秒内) 需要快速响应的缓冲机制.
研究的目的:
- 为月球着陆器设计和验证PZT驱动的可重复使用的缓冲机制.
- 开发一种适应性控制策略,用于滞后补偿.
- 为了实现符合标准的缓冲和增强的可重复使用性.
主要方法:
- 设计了一种PZT驱动的机制,使用螺母螺母将线性运动转换为旋转运动.
- 有限元素冲击动态模拟分析了对不同冲击力的结构反应.
- 一个Takagi-Sugeno模糊神经网络被实施用于控制滞后补偿.
主要成果:
- 分析了动态反应和受影响的结构性行为.
- 在2至4米/秒的着陆速度的实验表明,最大的反向加速为1.94-2.13米/秒2.2.
- 与-3着陆器相比,该机制显示出较小和更稳定的加速变化.
结论:
- 一种基于PZT的新型可重复使用的缓冲机制被成功设计和验证.
- 适应性模糊神经网络策略有效地弥补了控制滞后.
- 开发的系统为月球着陆应用提供了更好的性能.
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