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相关概念视频

Three-Dimensional Force System:Problem Solving01:30

Three-Dimensional Force System:Problem Solving

674
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...
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Two-Dimensional Force System: Problem Solving01:29

Two-Dimensional Force System: Problem Solving

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Solving problems related to two-dimensional force systems is an essential aspect of mechanics and engineering. By applying the principles of vector analysis and force equilibrium, one can determine the effect of multiple forces acting on an object in a two-dimensional space.
The first step to solving a two-dimensional force system problem is to draw a free-body diagram of the object under consideration. This diagram helps identify all the external forces acting on the object, including their...
588
Rolling Resistance: Problem Solving01:17

Rolling Resistance: Problem Solving

350
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
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Three-Dimensional Force System01:30

Three-Dimensional Force System

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In mechanical engineering, a three-dimensional force system is a system of forces acting in three dimensions, with forces applied along the x, y, and z coordinate axes. The three-dimensional force system is an important concept in mechanical engineering, as it allows engineers to understand and analyze the behavior of objects and structures in three dimensions. By understanding the forces acting on a system, engineers can design more efficient and effective mechanical systems that can withstand...
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Static and Kinetic Frictional Force01:05

Static and Kinetic Frictional Force

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One of the simpler characteristics of sliding friction is that it is parallel to the contact surfaces between systems, and is always in a direction that opposes the motion or attempted motion of the systems relative to each other. If two systems are in contact and moving relative to one another, then the friction between them is called kinetic friction. For example, kinetic friction slows a hockey puck sliding on ice.
However, if two systems are in contact and are stationary relative to one...
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Two-Dimensional Force System01:20

Two-Dimensional Force System

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A two-dimensional system in mechanical engineering involves the analysis of motion and forces in a plane. A two-dimensional force vector can be resolved into its components as:
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相关实验视频

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Using Insect Electroantennogram Sensors on Autonomous Robots for Olfactory Searches
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环境力传感有助于机器人跨越混乱的大障碍物.

Qihan Xuan1, Chen Li1

  • 1Department of Mechanical Engineering, Johns Hopkins University, Baltimore, MD, United States of America.

Bioinspiration & biomimetics
|November 8, 2023
PubMed
概括

感应力使机器人能够通过调整机器人的运动来导航复杂的环境. 这项研究表明,机器人可以估计障碍物的性,并选择高效的移动模式,从而减少混乱地形穿越的能源成本.

科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 生物力学 生物力学
  • 人工智能的人工智能

背景情况:

  • 机器人通常会避开障碍物,但杂乱的环境需要物理交互.
  • 盘点和没有传感器的机器人穿过光束,由于强力感应,动物的表现优于机器人.
  • 据假设,力感应可以改善机器人穿越大型,杂乱的障碍物.

研究的目的:

  • 在模拟中展示环境力感应如何帮助机器人穿越混乱的大障碍.
  • 开发一个物理模型来估计接触力对障碍物的刚性.
  • 为机器人创建一个强力反策略,以选择节能运动模式.

主要方法:

  • 开发了一个微型机器人与光束相互作用的多体动力学模拟.
  • 模拟光束硬度估计使用感知接触力.
  • 实施了强力反策略,根据估计的光束刚度来选择运动运动模式.

主要成果:

  • 强力反允许机器人穿过薄弱和刚性梁,与向前推进或避开障碍相比,能源成本更低.
  • 尽管振荡幅度,频率和位置感应不确定性有所变化,但硬度估计的准确性保持不变.
  • 较高的传感动力延迟增加了穿越的机械能量成本.
关键词:
经济适应性 经济适应性一个的,的.联系方式 联系方式 联系方式有关反的意见反反反.机车运动 机车运动潜在的能源景观 潜在的能源景观地动力学是地球动力学.

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结论:

  • 环境力传感对于机器人来说至关重要,以适应机动和有效地穿越杂乱的障碍物.
  • 开发的力量反策略使机器人能够根据障碍物属性智能地选择穿越方法.
  • 未来的工作应该在物理机器人平台上验证这些发现.