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相关概念视频

Electro-mechanical Systems01:19

Electro-mechanical Systems

876
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...
876
Phase-lead and Phase-lag Controllers01:22

Phase-lead and Phase-lag Controllers

133
Understanding the working function of different types of controllers can be illustrated with practical analogies, such as adjusting a stereo's volume equalizer. Cranking up the bass involves a phase-lead controller, which functions as a high-pass filter, while increasing the treble uses a phase-lag controller, which acts as a low-pass filter. PD controllers, similar to high-pass filters, enhance the system's response to high-frequency components. PI controllers, akin to low-pass...
133
Mechanical Systems01:22

Mechanical Systems

153
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...
153
PD Controller: Design01:26

PD Controller: Design

145
In automotive engineering, car suspension systems often employ Proportional Derivative (PD) controllers to enhance performance. PD controllers are utilized to adjust the damping force in response to road conditions. A controller, acting as an amplifier with a constant gain, demonstrates proportional control, with output directly mirroring input.
Designing a continuous-data controller requires selecting and linking components like adders and integrators, which are fundamental in Proportional,...
145

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相关实验视频

Updated: May 10, 2025

Fabrication of Soft Pneumatic Network Actuators with Oblique Chambers
07:09

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Published on: August 17, 2018

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用电驱动的相位过渡执行器为软机器人设计提供动力.

D Fonseca1, P Neto2

  • 1University of Coimbra, CEMMPRE, Department of Mechanical Engineering, Coimbra, Portugal.

Nature communications
|April 25, 2025
PubMed
概括

这项研究引入了一种使用液态气相转换与水的电动软执行器,实现高应变和加压率. 它提供低压操作和集成到软机器人中.

科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 材料科学 材料科学 材料科学
  • 机械工程 机械工程

背景情况:

  • 传统的软执行器通常依赖于静电或电热方法,限制了它们的潜力.
  • 液态气相转换执行器在速度和控制方面面临着挑战.

研究的目的:

  • 开发一种具有性能改进的液态气相过渡电软执行器.
  • 为了实现低压操作,提高软机器人的可控性和可扩展性.

主要方法:

  • 使用水作为工作流体,由灵活的线圈式加热元件提供动力.
  • 开发了一种工作流体选择方法,用于特定应用的优化.
  • 实施了非线性控制方法,以最大限度地减少振动和控制延迟.

主要成果:

  • 达到超过16%/s的延展率和100kPa/s的加压率.
  • 在高达24V的电压下,证明了超过50N的阻塞力.
  • 成功将执行器集成到仿生手和四足机器人中.

结论:

  • 液态气相转换电软执行器为高性能软机器人提供了可行的替代方案.

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  • 拟议的方法增强了执行器的能力,并使各种机器人应用成为可能.
  • 这项技术推动了可控制,可扩展和低压软机器人系统的发展.