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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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The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by...
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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.
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Manufacturing, Control, and Performance Evaluation of a Gecko-Inspired Soft Robot
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Earthworm-Inspired Multimodal Pneumatic Continuous Soft Robot Enhanced by Winding Transmission.

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This study introduces an earthworm-inspired soft robot with enhanced motion and obstacle avoidance. Its novel design achieves superior crawling speeds, demonstrating potential for medical and industrial applications.

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Area of Science:

  • Robotics
  • Biomimetics
  • Soft Matter

Background:

  • Soft robots offer advantages in safety and adaptability for complex environments.
  • Existing soft robots often lack efficient locomotion and autonomous navigation capabilities.
  • Mimicking biological systems like earthworms can inspire novel robotic designs.

Purpose of the Study:

  • To develop an earthworm-inspired multimodal pneumatic soft robot.
  • To enhance locomotion performance and environmental adaptability.
  • To achieve autonomous obstacle-avoidance capabilities.

Main Methods:

  • Implemented a derived overlapped continuous control law based on multiple peristaltic waves.
  • Utilized wire-winding transmission for coordinated segment deformation.
  • Developed an autonomous obstacle-avoidance strategy using contact force sensing.

Main Results:

  • The robot demonstrated multimodal movements including in-plane, cross-plane, and pipeline crawling.
  • Achieved a maximum in-plane crawling speed of 6.65 mm/s, surpassing similar robots.
  • Successfully performed autonomous obstacle avoidance and steering maneuvers.

Conclusions:

  • The earthworm-inspired soft robot exhibits superior multimodal motion and enhanced efficiency.
  • The developed control strategies and wire-winding transmission are effective for soft robot locomotion.
  • The robot shows significant potential for applications in medicine and industry.