非圆形滚动接触接头使机器人连接器的编程行为能够实现
Colter J Decker1, Tony G Chen1,2, Michelle C Yuen1,3
1John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138.
概括
这项研究引入了一种用于机器人的滚动接触接头 (RCJ) 优化的新方法. 优化的RCJ显著减少了对齐错误,并提高了机器人应用中的承载能力.
科学领域:
- 机器人技术 机器人技术 机器人技术
- 机械工程 机械工程
- 生物力学 生物力学
背景情况:
- 滚动接触关节 (RCJ) 对于各种机器人系统的运动至关重要.
- 现有的RCJ设计往往在动力学适应性和性能方面存在局限性.
研究的目的:
- 开发一种通用优化方法来定制RCJ动力学特性.
- 提高RCJ在机器人应用中的性能和适应性.
主要方法:
- 同时优化非圆形表面几何形状和内部驱动轮形状.
- 将尺寸和凸度等制造制约因素纳入优化框架.
- 应用该方法来设计模仿人类膝盖轨迹的RCJ.
主要成果:
- 实现了99.6%的调整误差降低,与模仿膝盖的RCJ的翻转关节相比.
- 与圆形RCJ相比,证明了99.3%的错误减少.
- 增加了两个手指抓手的承载能力超过3.5倍.
结论:
- 一般化的优化方法有效地调整了RCJ的动力学特性.
- 优化的RCJ在准确性和负载能力方面得到了显著的改进.
- 这种方法可以提高机器人在各种应用中的性能,例如操纵器和假肢.
相关概念视频
Phosphodiester Linkages
111.1K
Overview
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...
Phosphodiester bond forms when a phosphoric acid molecule (H3PO4) links with two hydroxyl groups (–OH) of two other molecules, forming two ester bonds. Two water molecules are released in this process. The phosphodiester bond is commonly found in nucleic acids (DNA and RNA) and plays a critical role in their structure and function.
Phosphodiester Bonds Link Nucleotides Together
DNA and RNA are polynucleotides or long chains of nucleotides that are linked together. A nucleotide is...
111.1K
Ligand Binding and Linkage
5.6K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
5.6K
Ligand Binding and Linkage
4.1K
4.1K
Torsion of Noncircular Members
581
Circular shafts undergoing torsional stress maintain their cross-sectional integrity due to their axisymmetric nature. This symmetry ensures an even distribution of stress, allowing the shaft to withstand torsion without distorting. In contrast, square bars, lacking this axial symmetry, experience significant distortion across their cross-sections when subjected to torsion, with the exception of along their diagonals and at lines connecting midpoints. A detailed examination of a cubic element...
581
Rolling Without Slipping
5.3K
People have observed the rolling motion without slipping ever since the invention of the wheel. For example, one can look at the interaction between a car's tires and the surface of the road. If the driver presses the accelerator to the floor so that the tires spin without the car moving forward, there must be kinetic friction between the wheels and the road's surface. If the driver slowly presses the accelerator, causing the car to move forward, the tires roll without slipping. It is...
5.3K
Rolling With Slipping
7.9K
Rolling with slipping is a physical phenomenon that occurs when a rolling object experiences both rotational and linear motion but also experiences frictional forces that cause slipping. This phenomenon can occur in various situations, such as when a tire rolls on a wet road or a ball rolls on a rough surface.
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can...
An object's rolling motion is characterized by its rotation around its axis, while linear motion refers to the object's translational motion along a surface. Frictional forces can...
7.9K


