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首页> 外文期刊>Mathematical Problems in Engineering >Design and Analysis of a Rigid-Flexible Parallel Mechanism for a Neck Brace
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Design and Analysis of a Rigid-Flexible Parallel Mechanism for a Neck Brace

机译：颈部支架刚性平行机构的设计与分析

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摘要

A rigid-flexible parallel mechanism called 3-RXS mechanism as a neck brace for patients with head drooping symptoms (HDS) is presented. The 3-RXS neck brace has a simple and light structure coupled with good rotation performance, so it can be used to assist the neck to achieve flexion and extension, lateral bend, and axial torsion. Firstly, to prove that the X-shaped compliant joint has a rotational degree of freedom (DoF) and can be used in the 3-RRS spherical parallel mechanism (3-RRS SPM), the six-dimensional compliance matrix, axis drift, and DoF of the X-shaped compliant joint have been systematically calculated. Secondly, the 3-RXS mechanism and its pseudo-rigid-body model (PRBM) are obtained by replacing the revolute pair with the X-shaped compliant joint in the 3-RRS SPM. The rotation workspace of the 3-RXS mechanism is also performed. Finally, to verify the rotation function and effect of 3-RXS mechanism for neck-assisted rehabilitation, the kinematics simulations of the 3-RXS and 3-RRS mechanisms are carried out and compared with the theoretical result, and a primary experiment for rotation measurement of 3-RXS mechanism prototype is carried out. All results prove the feasibility of the 3-RXS mechanism for a neck brace.
机译：提出了一种刚性的平行机制，称为3 rxs机制，作为颈部支架，用于头下垂症状（HDS）。 3-RXS颈部支架具有简单且光结构，旋转性能良好，因此可用于帮助颈部实现屈曲和伸展，横向弯曲和轴向扭转。首先，为了证明X形柔顺的关节具有自由度（DOF）的旋转程度，并且可以用于3-RRS球形并联机构（3-RRS SPM），六维顺应矩阵，轴漂移和已经系统地计算了x形柔顺关节的DOF。其次，通过在3-RRS SPM中用X形柔顺接头替换旋转副的旋转对来获得3-RxS机构及其伪刚体模型（PRBM）。还执行了3-RXS机制的旋转工作空间。最后，为了验证3-RXS机制对颈部辅助康复的旋转功能和影响，进行了3​​-RXS和3-RRS机制的运动学模拟，并与理论结果进行了比较，以及旋转测量的主要实验执行3-RXS机制原型。所有结果都证明了颈部支架的3-RXS机制的可行性。

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  • 来源
    《Mathematical Problems in Engineering》 |2019年第22期|9014653.1-9014653.20|共20页
  • 作者

    Liu Jingfang; Cheng Yanxia; Zhang Shuang; Lu Zhenxin; Gao Guohua;

  • 作者单位

    Beijing Univ Technol Coll Mech Engn & Appl Elect Technol Beijing Peoples R China|Beijing Univ Technol Key Lab Adv Mfg Technol Beijing Peoples R China;

    Beijing Univ Technol Coll Mech Engn & Appl Elect Technol Beijing Peoples R China;

    Beijing Univ Technol Coll Mech Engn & Appl Elect Technol Beijing Peoples R China;

    Beijing Univ Technol Coll Mech Engn & Appl Elect Technol Beijing Peoples R China;

    Beijing Univ Technol Coll Mech Engn & Appl Elect Technol Beijing Peoples R China|Beijing Univ Technol Key Lab Adv Mfg Technol Beijing Peoples R China;

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