基于空间站的一次自由度重复部署曝光平台的设计和动态
Junjie Li1,2, Xihan Li1, Chong Zhao1
1Key Laboratory of Space Utilization, Technology and Engineering Center for Space Utilization, Chinese Academy of Sciences, Beijing 100094, China.
iScience
|September 19, 2025
概括
空间站宇宙尘埃实验的新型可部署平台提供了模块化的可扩展性和精确的控制. 该系统确保了同步部署和收回,这对于有效的太空曝光平台至关重要.
科学领域:
- 太空科学与工程 太空科学与工程
- 材料科学 材料科学 材料科学
- 机器人和控制系统 机器人和控制系统
背景情况:
- 空间站平台对于现场宇宙尘埃实验至关重要.
- 现有的平台可能缺乏模块化和精确的部署控制.
- 需要可扩展性来适应不同的实验要求.
研究的目的:
- 为空间站宇宙尘埃实验提供一种新的,可反复部署的曝光平台.
- 开发一个模块化系统,可以扩展以容纳多个面板.
- 分析控制策略并预测不同配置的性能.
主要方法:
- 一个自由度,模块化可扩展的平台设计的开发.
- 动态建模来定义任意面板数的运动空间.
- 拉格朗奇动力学建模用于预测扭矩需求和部署周期.
- 实施和测试一个4面板原型与统一的加速减速控制策略.
主要成果:
- 拟议的平台以模块化方式扩展,折叠比例为14.09:1.
- 建立了动力学和动态模型来预测性能.
- 对于4面板系统的扭矩要求计算为0.0777Nm,对于40s部署则为0.0972Nm.
- 最低部署时间减少到14.05秒和12.63秒,目标扭矩为1Nm.
- 原型测试证实了流,同步的部署-撤回功能.
- 定位测试实现了比5.42 ± 0.60毫米更好的绝对精度和比46 ± 2微米更细的重复度.
结论:
- 开发的平台为太空曝光实验提供了经过验证,可扩展和精确控制的解决方案.
- 模块化设计和控制策略为未来的太空任务提供了坚实的基础.
- 该系统的性能指标支持其适用于苛刻的空间环境的适用性.
相关概念视频
One-Degree-of-Freedom System
808
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
808
Space Trusses: Problem Solving
879
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. Due to its adaptability and capacity to withstand complex loads, the space truss is widely used in various construction projects.
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
Consider a tripod consisting of a tetrahedral space truss with a ball-and-socket joint at C. Suppose the height and lengths of the horizontal and vertical...
879
Space Trusses
1.3K
A space truss is a three-dimensional counterpart of a planar truss. These structures consist of members connected at their ends, often utilizing ball-and-socket joints to create a stable and versatile framework. The space truss is widely used in various construction projects due to its adaptability and capacity to withstand complex loads.
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
At the core of a space truss lies the fundamental unit known as the tetrahedron. This structure is composed of six members that form a three-dimensional shape...
1.3K
Applications of Stress
647
Consider a structure made of a boom and a rod designed to support a load. These two components are connected by a pin and stabilized by brackets and pins. The boom and the rod are detached from their supports to assess the different stresses imposed on this structure, and a free-body diagram is drawn. Then, all the forces applied, including the load acting on the structure, are identified. The reaction forces exerted on both the boom and the rod are computed using the equilibrium equations.
The...
The...
647


