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X-crossing pneumatic artificial muscles.

Miao Feng1,2,3,4, Dezhi Yang1,2, Lei Ren3,5

  • 1Robotics Institute, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China.

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|September 20, 2023
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Summary
This summary is machine-generated.

Researchers developed novel X-crossing pneumatic artificial muscles (X-PAMs) that achieve a 92.9% contraction ratio and high output force. These advanced artificial muscles offer fast, powerful performance for robotics and can operate in extreme environments.

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Area of Science:

  • Robotics and Materials Science

Background:

  • Pneumatic artificial muscles (PAMs) show promise for soft exoskeletons and robots.
  • Conventional PAMs face limitations in contraction ratio, output force, and dynamic response due to material, structural, or actuation principles.

Purpose of the Study:

  • To present lightweight, high-performance X-crossing pneumatic artificial muscles (X-PAMs) overcoming limitations of traditional PAMs.
  • To demonstrate X-PAMs' capability for high contraction ratio, output force, and dynamic response.

Main Methods:

  • Development of X-PAMs utilizing an X-crossing mechanism for direct linear motion conversion.
  • Characterization of X-PAMs' contraction ratio, output force, strain rate, specific power, and work density.

Main Results:

  • Achieved an unprecedented 92.9% contraction ratio.
  • Generated an output force of 207.9 N/kg/kPa.
  • Demonstrated excellent dynamic properties: 1603.0%/s strain rate, 5.7 kW/kg specific power, and 842.9 kJ/m³ work density.
  • X-PAMs showed robustness in high-temperature, underwater, and long-duration actuation scenarios.

Conclusions:

  • X-PAMs offer a significant advancement over conventional PAMs, providing fast and powerful actuation.
  • The design is scalable and robust, suitable for diverse applications in robotics and extreme environments.