混凝土泵车臂架结构健康监测传感器优化布置

华南理工大学学报(自然科学版) ›› 2012, Vol. 40 ›› Issue (12): 41-46.

混凝土泵车臂架结构健康监测传感器优化布置

滑广军吴运新^†

中南大学机电工程学院∥高性能复杂制造国家重点实验室，湖南长沙 410083

收稿日期:2012-06-27 修回日期:2012-09-25 出版日期:2012-12-25 发布日期:2012-11-02
通信作者: 吴运新(1963-) ，男，博士，教授，博士生导师，主要从事结构动力学、机电控制、冶金机械研究． E-mail: wuyunxin@csu．edu．cn E-mail:846620681@ qq.com
作者简介:滑广军(1975-) ，男，博士生，副教授，主要从事结构健康监测、结构动力学研究．
基金资助:
国家"863”计划项目( 2008AA042801， 2008AA042802)

Optimal Sensor Placement for Health Monitoring of Boom Structure of Concrete Pump Truck

Hua Guang-jun Wu Yun-xin

College of Mechanical and Electrical Engineering∥State Key Laboratory for High Performance Complex Manufacturing,Central South University,Changsha 410083,Hunan,China

Received:2012-06-27 Revised:2012-09-25 Online:2012-12-25 Published:2012-11-02
Contact: 吴运新(1963-) ，男，博士，教授，博士生导师，主要从事结构动力学、机电控制、冶金机械研究． E-mail: wuyunxin@csu．edu．cn E-mail:846620681@ qq.com
About author:滑广军(1975-) ，男，博士生，副教授，主要从事结构健康监测、结构动力学研究．
Supported by:
国家"863”计划项目( 2008AA042801， 2008AA042802)

摘要/Abstract

摘要： 为实现混凝土泵车臂架类柔性多体结构健康监测的应变传感器优化布置，首先，利用各待选测点应变信号的相关系数构建了模糊支持度矩阵，计算了各待选测点的综合支持度; 然后，将待选测点应力水平、传感器安装难易程度、测点安全性、应力梯度等因素进行了分级及标准量化; 接着，利用层次分析法确定了各个因素的权重关系; 最后，利用综合评价法对待选测点进行优化，确定了健康监测测点的最优位置．文中还以某四节臂架泵车为例，选择4 种工况分别对其应变传感器的布置进行了优化，结果证明了该综合评价方法的稳定性和可行性．

关键词: 传感器优化布置, 结构健康监测, 混凝土泵车, 柔性多体结构, 支持度矩阵, 综合评价法

Abstract:

In order to implement the optimal placement of strain sensors for the health monitoring of flexible multibody structures such as the boom structure of concrete pump trucks,a fuzzy support degree matrix is constructed by using the correlation coefficients of strain signals of the measuring points to be selected,and the comprehensive support degree of each measuring point is calculated. Then,some factors,such as the stress level,the sensor installation difficulty,the measuring point security and the stress gradient,are classified and standardized,and the weight of each factor is determined through an analytical hierarchy process. Moreover,the sensor locations are optimized according to the comprehensive evaluation results. Finally,a typical four-segment boom concrete pump truck is selected as the object to perform the sensor placement optimization under four different working conditions. The results show that the proposed comprehensive evaluation method is both stable and feasible.

Key words: optimal sensor placement, structure health monitoring, concrete pump truck, flexible multi-body structure, support degree matrix, comprehensive evaluation method

中图分类号:

TP391.75

滑广军吴运新. 混凝土泵车臂架结构健康监测传感器优化布置[J]. 华南理工大学学报(自然科学版), 2012, 40(12): 41-46.

Hua Guang-jun Wu Yun-xin. Optimal Sensor Placement for Health Monitoring of Boom Structure of Concrete Pump Truck[J]. Journal of South China University of Technology(Natural Science Edition), 2012, 40(12): 41-46.