Superposition characteristic of strain of parallel six-axis acceleration sensor parts

WANG Linkang; YOU Jingjing; QIU Xin; FU Zhouzhou

doi:10.13873/J.1000-9787(2020)08-0042-04

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Superposition characteristic of strain of parallel six-axis acceleration sensor parts

更新时间：2025-09-11

- Superposition characteristic of strain of parallel six-axis acceleration sensor parts
- Issue 8, Pages: 42-45+54(2020)
- 作者机构：
  
  1. 南京林业大学机械电子工程学院
  2. 江苏省精密与微细制造技术重点实验室
  3. 南京林业大学汽车与交通工程学院
- 作者简介：
- 基金信息：
- DOI：10.13873/J.1000-9787(2020)08-0042-04
  CLC： TP212
- Published：2020
- 稿件说明：
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WANG Linkang, YOU Jingjing, QIU Xin, et al. Superposition characteristic of strain of parallel six-axis acceleration sensor parts[J]. 2020, (8): 42-45+54.
DOI：

WANG Linkang, YOU Jingjing, QIU Xin, et al. Superposition characteristic of strain of parallel six-axis acceleration sensor parts[J]. 2020, (8): 42-45+54. DOI： 10.13873/J.1000-9787(2020)08-0042-04.

摘要

针对六维加速度传感器输入、输出量强非线性耦合的特点

以一种并联式构型为例

研究了主要零件的应变与输入量之间的传递特性。通过Newton-Euler法建立了系统的正向动力学方程

推导出6个输入量与12条支链轴向力之间的解析函数。通过有限元分析

建立轴向力与传感器主要零件应变之间的映射关系。研究结果表明

支链、副板、外壳的应变满足线性叠加关系

表现为三者变形量的残差占比不超过0.06%;锁紧板和预紧螺钉的应变不满足线性叠加关系

表现为锁紧板和预紧螺钉变形量的残差占比分别为6.92%

7.80%。上述结论为六维加速度传感器的结构优化和工作量程的确定奠定了理论基础。

Abstract

Aiming at the characteristics of strong nonlinear coupling of input and output of the six-axis acceleration sensor

the transfer characteristics between the strain of the main components and the input are studied based on parallel mechanism. The forward dynamics equation of the system is established by Newton-Euler method

and the analytic function between the six input quantities and the axial force of 12 branched chains is derived. The mapping relationship between the axial force and the strain of the main components of the sensor is established through finite element analysis. Research results show that the strains of the branched chain

sub-plates and outer casings satisfy the linear superposition relationship

manifested as the residual ratio of the deformation of the three components are less than 0. 06 %. The strain of the locking plate and the pre-tightening screw does not satisfy the linear superposition relationship. The residual ratios of the deformation of the locking plate and the pretightening screw are 6. 92 % and 7. 80 %

respectively. The above conclusions lay a theoretical foundation for the structural optimization of the six-axis acceleration sensor and the determination of the working range.

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