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arXiv 2108.08449cs.ROphysics.app-ph
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一种用于折纸机器人自主驱动的剪切折叠自持柔顺振荡器

A cut-and-fold self-sustained compliant oscillator for autonomous actuation of origami-inspired robots

University of California, Los Angeles(加利福尼亚大学洛杉矶分校)

Wenzhong Yan, Ankur Mehta

摘要:

折纸启发的机器人特别令人感兴趣,因为它们具有通过切割和折叠柔性2D片材甚至字符串(即可打印制造)快速和可访问的设计和制造优雅设计和复杂功能的潜力。然而,折纸机器人仍然需要用于致动和控制的笨重的刚性部件或电子器件,以完成具有可靠性、可编程性、输出大量力的能力和耐久性的任务,这限制了它们的全部潜力。在这里,我们提出了一种可打印的自持兼容振荡器,它只使用恒定的电功率产生周期性的致动,而无需分立元件或电子控制硬件。该振荡器是鲁棒的(10个原型中有9个在第一次尝试中成功工作),可配置的(具有从3秒到12秒的可调周期),强大的(可以克服流体动力学阻力,以约1.6个体长/分钟的速度持续推进游泳者),并且持久(约10^3个周期);它能够驱动具有规定的自主行为的大型设备,例如运动和排序。该振荡器在水下和高磁场中也能完全发挥作用。我们的分析模型表征的振荡周期的基本参数,使可编程设计的振荡器。可打印的振荡器可以无缝地集成到折纸灵感的系统中,从而实现快速设计和原型制作;由此产生的集成器件重量轻,成本低,兼容性好,无电子,可扩展,从而实现极端领域的实际应用。我们演示了振荡器的功能:(i)可打印游泳者的自主滑行,(ii)LED闪烁,以及(iii)流体搅拌。这项工作为实现高度集成驱动和控制的完全可打印自主机器人铺平了道路。

英文摘要:

Origami-inspired robots are of particular interest given their potential for rapid and accessible design and fabrication of elegant designs and complex functionalities through cutting and folding of flexible 2D sheets or even strings, i.e.printable manufacturing. Yet, origami robots still require bulky, rigid components or electronics for actuation and control to accomplish tasks with reliability, programmability, ability to output substantial force, and durability, restricting their full potential. Here, we present a printable self-sustained compliant oscillator that generates periodic actuation using only constant electrical power, without discrete components or electronic control hardware. This oscillator is robust (9 out of 10 prototypes worked successfully on the first try), configurable (with tunable periods from 3 s to 12 s), powerful (can overcome hydrodynamic resistance to consistently propel a swimmer at ~1.6 body lengths/min), and long-lasting (~10^3 cycles); it enables driving macroscale devices with prescribed autonomous behaviors, e.g. locomotion and sequencing. This oscillator is also fully functional underwater and in high magnetic fields. Our analytical model characterizes essential parameters of the oscillation period, enabling programmable design of the oscillator. The printable oscillator can be integrated into origami-inspired systems seamlessly and monolithically, allowing rapid design and prototyping; the resulting integrated devices are lightweight, low-cost, compliant, electronic-free, and nonmagnetic, enabling practical applications in extreme areas. We demonstrate the functionalities of the oscillator with: (i) autonomous gliding of a printable swimmer, (ii) LED flashing, and (iii) fluid stirring. This work paves the way for realizing fully printable autonomous robots with a high integration of actuation and control.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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