面向结构形变重构的应变传感器优化布局

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振动与冲击 ›› 2019, Vol. 38 ›› Issue (14) : 83-88.

论文

面向结构形变重构的应变传感器优化布局

蔡智恒1，周金柱1，唐宝富2，李海洋1，刘威1

作者信息 +

Optimal strain sensor placement for structural deformation reconstruction

CAI Zhiheng1，ZHOU Jinzhu1，TANG Baofu2，LI Haiyang1，LIU Wei1

Author information +

文章历史 +

摘要

提出了一种面向结构形变重构的两步序列应变传感器布局方法。该方法基于应变-位移转换关系，建立了信息冗余度准则和重构精度准则。在该方法中，第一步依据列主元QR分解，确定初始传感器位置集合，第二步以重构误差最小为目标，以信息冗余度为约束逐个增加传感器位置到初始传感器位置集合。该方法应用于某相控阵天线实验平台，通过四种评价准则评估布局效果。结果表明所提方法不仅提高了重构精度而且降低了传感器信息冗余度。

Abstract

A two-stage strain sensor placement method for structural deformation reconstruction was proposed.Based on the strain-displacement transformation relationship, two criteria, information redundancy and reconstruction accuracy, were proposed.In the method, the initial sensor location set was determined using QR decomposition at the first stage.In the second step, taking the information redundancy as a restraint, the initial sensor location set was modified by adding sequentially new positions one by one to it to gradually minimize the reconstruction errors.The proposed method was applied to the experimental platform of a phased array antenna structure, and the results were evaluated by using four criteria.The experimental results show that the proposed method can not only improve reconstruction accuracy but also reduce information redundancy.

导出引用

蔡智恒1，周金柱1，唐宝富2，李海洋1，刘威1. 面向结构形变重构的应变传感器优化布局[J]. 振动与冲击, 2019, 38(14): 83-88

CAI Zhiheng1，ZHOU Jinzhu1，TANG Baofu2，LI Haiyang1，LIU Wei1. Optimal strain sensor placement for structural deformation reconstruction[J]. Journal of Vibration and Shock, 2019, 38(14): 83-88

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