Digital material assembly by passive means and modular isotropic lattice extruder system

    公开(公告)号:US10145110B2

    公开(公告)日:2018-12-04

    申请号:US15649837

    申请日:2017-07-14

    摘要: A set of machines and related systems build structures by the additive assembly of discrete parts. These digital material assemblies constrain the constituent parts to a discrete set of possible positions and orientations. In doing so, the structures exhibit many of the properties inherent in digital communication such as error correction, fault tolerance and allow the assembly of precise structures with comparatively imprecise tools. Assembly of discrete cellular lattices by a Modular Isotropic Lattice Extruder System (MILES) is implemented by pulling strings of lattice elements through a forming die that enforces geometry constraints that lock the elements into a rigid structure that can then be pushed against and extruded out of the die as an assembled, load bearing structure.

    Neural efferent and afferent control of spring equilibrium, damping, and power in backdrivable and non-backdrivable series-elastic actuators comprising variable series stiffness mechanisms

    公开(公告)号:US11278235B2

    公开(公告)日:2022-03-22

    申请号:US16661483

    申请日:2019-10-23

    摘要: A prosthetic device includes a frame defining an output axis, a cantilever beam spring attached to the frame, a moment arm attached to the spring, and a rigid output arm coupled to the frame and rotatable about the output axis. A connector assembly is configured to apply a moment to the cantilever beam spring via the moment arm while applying a torque about the output axis via the output arm. An ankle-foot device includes foot and ankle members connected for two-degree of freedom movement relative to one another, allowing for rotation about an ankle axis and rotation about a subtalar axis. Two linear actuators, each coupled to corresponding series elastic element, link the foot and ankle members. Driving the actuators in the same direction causes rotation about the ankle axis and driving the actuators in opposing directions causes rotation about the subtalar axis. A processor receives sensory information from a sensor and drives the actuators to control an equilibrium position of the series elastic elements. A rotary actuator for a prosthetic device includes a housing frame, a motor mounted within the housing frame, and a cycloidal drive coupled to the motor within the housing frame. A torsion shaft can extend through the actuator to an output and provide a series elastic element.

    Digital Material Assembly By Passive Means And Modular Isotropic Lattice Extruder System (MILES)
    10.
    发明申请
    Digital Material Assembly By Passive Means And Modular Isotropic Lattice Extruder System (MILES) 审中-公开
    数字材料组件通过被动装置和模块化各向同性晶格挤出机系统(MILES)

    公开(公告)号:US20170043883A1

    公开(公告)日:2017-02-16

    申请号:US15340244

    申请日:2016-11-01

    IPC分类号: B64F5/00 B64C1/06

    摘要: A set of machines and related systems build structures by the additive assembly of discrete parts. These digital material assemblies constrain the constituent parts to a discrete set of possible positions and orientations. In doing so, the structures exhibit many of the properties inherent in digital communication such as error correction, fault tolerance and allow the assembly of precise structures with comparatively imprecise tools. Assembly of discrete cellular lattices by a Modular Isotropic Lattice Extruder System (MILES) is implemented by pulling strings of lattice elements through a forming die that enforces geometry constraints that lock the elements into a rigid structure that can then be pushed against and extruded out of the die as an assembled, loadbearing structure.

    摘要翻译: 一组机器和相关系统通过分立部件的添加组件构建结构。 这些数字材料组件将组成部分约束成一组可能的位置和取向。 在这样做时,这些结构显示出数字通信中固有的许多属性,如纠错,容错,并允许使用相对不精确的工具组装精确的结构。 通过模块化各向同性晶格挤出机系统(MILES)组装离散的蜂窝状晶格是通过将成形模具拉入晶格元素串来实现的,该成形模具实现了将元件锁定成刚性结构的几何约束, 作为组装的承重结构。