相关实验视频
Updated: Jun 2, 2025

07:44
Design and Synthesis of a Reconfigurable DNA Accordion Rack
Published on: August 15, 2018
7.0K
一个符合标准的元结构设计,可重新配置到六个自由度
Humphrey Yang1, Dinesh K Patel1,2, Tate Johnson1,3
1Morphing Matter Lab, Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, USA.
Nature communications
|January 17, 2025
概括
研究人员为先进的触觉设备和机器人开发了可重新配置的兼容元结构,具有可调节的刚性. 这一创新增强了可编程性和形式定制性,扩大了动感反和机械超材料中的应用.
科学领域:
- * 机械工程 机械工程
- * 机器人技术 机器人技术
- * 材料科学 材料科学
背景情况:
- * 具有可重新配置的自由度的合规机制对于触觉设备,机器人和超材料至关重要.
- *现有的设备在可编程性和形式定制性方面存在局限性,这阻碍了它们的广泛采用.
研究的目的:
- * 引入一种新的元结构概念,具有可重新配置的运动自由和可调节的刚度.
- *通过增强的设计灵活性,使其能够适应各种形式因素和应用.
主要方法:
- * 集成被动曲和主动变硬杆来控制动力自由.
- * 一个合理的设计管道,用于优化曲拓,几何和控制信号的目标移动性.
- * 创建能够达到6个自由度的单元关节.
主要成果:
- * 展示了一种可调节硬度 (0.370至2.278Nm/deg) 的手腕装置,用于动态关节控制.
- * 开发了一种触觉指甲装置,其刚度从2.27到52.815Nmm-1不等,模拟了各种材料纹理.
- * 介绍了一种可穿戴设备,用于增强触觉体验和肌肉训练.
结论:
- * 拟议的元结构概念显著提高了合规机制的多功能性和可编程性.
- *这种方法使合规元结构的开发实现了民主化,扩大了它们在不同领域的适用性.
相关概念视频
One-Degree-of-Freedom System
460
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...
460
Support Reactions in Three Dimensions
884
Support reactions in three dimensions help maintain the stability and equilibrium of various structures and systems. These reactions prevent the system from translating and rotating, ensuring the design can withstand external forces and perform its intended function efficiently and safely. Some of the supports providing support reactions in three dimensions are discussed below:
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
Ball and Socket Joint is one of the supports allowing free rotation about any axis. This freedom of rotation is...
884
Controller Configurations
85
Controller configurations are crucial in a car's cruise control system because they manage speed over time to maintain a consistent pace regardless of road conditions, thereby meeting design goals. In traditional control systems, fixed-configuration design involves predetermined controller placement. System performance modifications are known as compensation.
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
Control-system compensation involves various configurations, most commonly series or cascade compensation, in which the controller...
85
Stability of structures
155
In mechanical engineering, the stability of systems under various forces is critical for designing durable and efficient structures. One fundamental way to explore these concepts is by analyzing systems like two rods connected at a pivot point, O, with a torsional spring of spring constant k at the pivot point. This system is similar in appearance to a scissor jack used to change tires on a car. In this case, the arms of the linkage (equivalent to the rods in this system) are entirely vertical,...
155
Virtual Work for a System of Connected Rigid Bodies
369
Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
Next,...
Next,...
369
Three-Dimensional Force System:Problem Solving
622
A three-dimensional force system refers to a scenario in which three forces act simultaneously in three different directions. This type of problem is commonly encountered in physics and engineering, where it is necessary to calculate the resultant force on the system, which can then be used to predict or analyze the behavior of the object or structure under consideration.
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
To solve a three-dimensional force system, first resolve each force into its respective scalar components. Do this using...
622

