传感器优化布置的有效独立-改进模态应变能方法

詹杰子1,余 岭1-2

振动与冲击 ›› 2017, Vol. 36 ›› Issue (1) : 82-87.

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PDF(1588 KB)
振动与冲击 ›› 2017, Vol. 36 ›› Issue (1) : 82-87.
论文

传感器优化布置的有效独立-改进模态应变能方法

  • 詹杰子1,余 岭1-2
作者信息 +

An effective independenceimproved modal strain energy method for optimal sensor placement

  • ZHAN Jie-zi1,YU Ling1,2
Author information +
文章历史 +

摘要

针对经典的传感器优化布置方法--有效独立法(EI)容易丢失能量较大测点的不足,引入新的模态应变能修正EI法,提出有效独立-改进模态应变能法(EI-IMSE)。考虑模态数目的影响,通过空间桁架塔结构数值研究与矩形截面空心铰支梁的实验验证,并经四种评价准则与既有的EI及其三种EI改进方法的对比研究,表明本文提出的EI-IMSE法不仅保留EI法的优点,且具有良好的抗噪性和低阶模态识别的准确性。

Abstract

Here, a novel effective independenceimproved modal strain energy (EI-IMSE) method was proposed to improve the effective independence (EI) algorithm in structural health monitoring field. The EI-IMSE optimal sensor placement (OSP) method was verified using a numerical simulation for a 3D truss tower and a test for a rectangular hollow steel beam hinged at both ends. Based on four criteria, the EI-IMSE OSP method was evaluated compared with the EI method, the EI-driving point residue (EI-DPR) one, the EI-average driving DOF velocity (EI-ADDOFV) one, and the EI-average acceleration amplitude (EI-AAA) one. The results showed that the proposed EI-IMSE method can not only retain advantages of the EI method but also have a better accuracy in identifying low order modes with a good robustness.

关键词

结构健康监测 / 模态实验 / 传感器优化布置 / 有效独立法

Key words

structural health monitoring / modal test / optimal sensor placement / effective independence

引用本文

导出引用
詹杰子1,余 岭1-2. 传感器优化布置的有效独立-改进模态应变能方法[J]. 振动与冲击, 2017, 36(1): 82-87
ZHAN Jie-zi1,YU Ling1,2. An effective independenceimproved modal strain energy method for optimal sensor placement[J]. Journal of Vibration and Shock, 2017, 36(1): 82-87

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