Spring and latch dynamics can act as control pathways in ultrafast systems
Spring and latch dynamics can act as control pathways in ultrafast systems
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DOI：
10.1088/1748-3190/acaa7c
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发表时间：
2023-03-01
影响因子：
3.4
通讯作者：
Patek, S. N.
中科院分区：
文献类型：
--
作者：
Hyun, N. P.;Olberding, J. P.;Patek, S. N.
由弹簧推动并由闩锁释放的超快运动被认为仅限于运动前的能量调整，并且一旦运动开始似乎就无法调整。即便如此，在整个生命树中，超快生物体在动态环境中导航并产生一系列运动，这表明了未被识别的控制能力。我们开发了一个控制途径的框架，利用弹簧推进，闩锁释放系统的非线性动力学。我们对弹簧动力学进行分析建模，并开发闩锁动力学的参数缩减模型，以量化它们如何在内部或通过不断变化的外部环境进行调整。使用拉格朗日力学，我们测试前馈和反馈控制实现通过弹簧和闩锁动态。我们建立通过示意性通知建模，超快运动可以可控地变化，在闩锁释放和弹簧推进。更深入地了解多个控制途径之间的相互联系，以及每个控制途径的可调性，在超快生物力学系统，这里有可能扩大合成超快系统的能力，并提供了一个新的框架来理解快速生物体的行为受到扰动和环境的非理想性。
Ultrafast movements propelled by springs and released by latches are thought limited to energetic adjustments prior to movement, and seemingly cannot adjust once movement begins. Even so, across the tree of life, ultrafast organisms navigate dynamic environments and generate a range of movements, suggesting unrecognized capabilities for control. We develop a framework of control pathways leveraging the non-linear dynamics of spring-propelled, latch-released systems. We analytically model spring dynamics and develop reduced-parameter models of latch dynamics to quantify how they can be tuned internally or through changing external environments. Using Lagrangian mechanics, we test feedforward and feedback control implementation via spring and latch dynamics. We establish through empirically-informed modeling that ultrafast movement can be controllably varied during latch release and spring propulsion. A deeper understanding of the interconnection between multiple control pathways, and the tunability of each control pathway, in ultrafast biomechanical systems presented here has the potential to expand the capabilities of synthetic ultra-fast systems and provides a new framework to understand the behaviors of fast organisms subject to perturbations and environmental non-idealities.