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相关概念视频

Mechanical Systems01:22

Mechanical Systems

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Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically...
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Electro-mechanical Systems01:19

Electro-mechanical Systems

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Electromechanical systems are intricate configurations that effectively combine electrical and mechanical elements to achieve a desired outcome. Central to many of these systems is the DC motor, a device that converts electrical energy into mechanical motion, enabling various applications ranging from simple fans to complex robotic mechanisms.
A key component of the DC motor is the armature, a rotating circuit positioned within a magnetic field. As an electric current passes through the...
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Method of Joints: Problem Solving II01:30

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Consider a truss structure with frictionless joints fixed to a wall and roller support. If a force of 150 N is applied to joint A, the forces in each member of the truss can be determined using the method of joints.
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The adult human body usually has 206 bones, and except for the hyoid bone in the neck, each bone is connected to at least one other bone. Joints are the location where bones come together. Many joints allow for movement between the bones. At these joints, the articulating surfaces of the adjacent bones can move smoothly against each other. However, the bones of other joints may be joined by connective tissue or cartilage. These joints are designed for stability and provide little or no...
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The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
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Method of Joints: Problem Solving I01:30

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The method of joints is a commonly used technique to analyze the forces in structural trusses. The method is based on the principle of equilibrium, which assumes that the truss members are connected by frictionless pins. The forces at each joint can be determined by considering the equilibrium of the forces acting on that joint. Consider a truss structure with two forces of 20 N and 10 N acting at joints C and D, respectively. The method of joints can be used to determine the forces FCB, FDC,...
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使用超可编程接头编码机械智能.

Rui Wu1,2,3, Luca Girardi1,2, Stefano Mintchev1,2

  • 1Environmental Robotics Laboratory, Department of Environmental Systems Science, ETH Zurich, 8092 Zurich, Switzerland.

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概括
此摘要是机器生成的。

研究人员开发了一种弹性滚动 (ERC),以创建机械智能机器人身体. 这项创新使机器人能够以被动机械特性执行复杂的任务,模仿动物体现的智能.

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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
  • 生物模拟学是一种生物模拟学.

背景情况:

  • 动物身体通过被动机械反应表现出体现的智力,使复杂的运动能够在最小的神经或肌肉努力下进行.
  • 在机器人中复制这一点是具有挑战性的,因为缺乏可调整的机械参数,例如刚性,这对于智能物理控制至关重要.

研究的目的:

  • 为了引入一种新型组件,弹性滚动凸轮 (ERC),具有精确的反向可设计的旋转刚度.
  • 展示机器人可编程机械性能在实现体内智能的潜力.

主要方法:

  • 开发了一种弹性滚动凸轮 (ERC),能够准确地复制广泛的旋转刚度配置文件.
  • 在各种尺度 (毫米到厘米) 中制造ERC原型.
  • 将ERC集成到机器人系统中,包括双脚机器人和四旋翼无人机,以展示其功能.

主要成果:

  • 该ERC成功复制了10万个模拟硬度配置文件,证明了其设计灵活性.
  • 一个带有ERC被动膝盖的双脚机器人在不平坦的地形上实现了节能,稳定的行走,没有复杂的控制.
  • 一架配备ERC接头的四旋翼无人机展示了冲击激活的双状态变形能力.

结论:

  • 弹性滚动凸轮 (ERC) 提供了一个可编程的机械元件,用于创建具有体现智能的机器人.
  • 正如ERC所证明的,机器人组件的可调节刚性是实现高级被动移动和变形行为的关键.
  • 这种方法为以生物原理为灵感的更高效,更适应性强的机器人系统提供了途径.