用于无人机中的冲击缓冲和自动驱动实时传感的生物灵感扭转型超级材料
Xujiang Chao1, Haoteng Hu1, Jianjie Lin1
1School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, PR China.
Science advances
|September 3, 2025
概括
这项研究引入了一种生物灵感的超材料保护器,可吸收冲击并产生无人机自传感功率. 它提供轻量级的振动缓解和实时监控, 没有外部电源.
科学领域:
- 材料科学与工程
- 航空航天工程
- 生物模拟学
背景情况:
- 流引起的振动威胁着飞机,尤其是无人机,需要轻量级的冲击监测和保护.
- 现有的解决方案往往缺乏集成传感或需要外部电源.
研究的目的:
- 为无人机开发一个多功能保护系统,同时缓冲冲击,并实现自动传感.
- 创建一个轻量级的,生物灵感的解决方案以提高结构完整性和实时监控.
主要方法:
- 一个扭曲超模元材料 (THM) 与一个 triboelectric 纳米发电机 (TENG) 的集成.
- 对THM-TENG保护器可调节的刚性,冲击能量吸收和特定能量吸收的描述.
- 使用 triboelectrification 将机械冲击能量转换为电信号进行传感.
主要成果:
- THM-TENG保护器显示可调节的刚性 (40-4300 N/mm) 和~70%的冲击能量吸收.
- 在总重量为10克的情况下,达到约0.25 J/g的特定能量吸收.
- 通过自发电信号实现实时冲击负载监控 (高达1000N,≤5Hz).
结论:
- 对于无人机来说,THM-TENG系统提供了双重功能:振动缓解和自动供电的实时监控 (力,定位,预警).
- 这种生物灵感的轻量级系统为航空航天,机器人和无人驾驶车辆的保护技术提供了变革性框架.
相关概念视频
01:17Magnetic Damping
1.3K
Eddy currents can produce significant drag on motion, called magnetic damping. For instance, when a metallic pendulum bob swings between the poles of a strong magnet, significant drag acts on the bob as it enters and leaves the field, quickly damping the motion.
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
If, however, the bob is a slotted metal plate, the magnet produces a much smaller effect. When a slotted metal plate enters the field, an emf is induced by the change in flux; however, it is less effective because the slots limit the...
1.3K
01:24Absolute Motion Analysis- General Plane Motion
751
Visualize a drone, with its propellers spinning rapidly, hovering mid-air. The fascinating movements and operations of this drone can be comprehended by applying the principle of general plane motion.
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
As the drone's propellers rotate, an upward force is generated that counteracts the force of gravity, enabling the drone to lift off from the ground. This initial movement of the drone is along a straight path, representing a form of translational motion. In this phase, every point on the...
751