两向正交正放网架结构传感器布置研究  

Study of sensor placement on two orthogonal spatial truss structures

作　　者：王欢[1] 张丽梅[1] 刘卫然[1] 夏昌浩[1] 

机构地区：[1]河北科技大学建筑工程学院,河北石家庄050018

出　　处：《河北工业科技》2016年第1期68-72,共5页Hebei Journal of Industrial Science and Technology

基　　金：河北省自然科学基金(E2014208135)

摘　　要：为了找到两向正交正放网架结构传感器的布置方法,针对模态可观测性与损伤可识别性传感器布置结果不一致的特点,由结构运动方程出发,考虑结构响应与振型和损伤灵敏度之间的关系,根据Fisher信息熵原理,建立同时包含模态振型和损伤灵敏度信息的Fisher信息矩阵,确立以Fisher信息矩阵2-范数最大化为准则的目标优化算法,构建了目标函数NC值,在完好、单损伤和多损伤情况下,通过该方法获得该结构的传感器布置方案。In order to find sensor placement method on two orthogonal spatial truss structures, considering the different place- ment of sensors for modal observability and damage identification, starting from the structural motion equation, taking into account the relationship between structural response and vibration mode and damage sensitivity, according to Fisher information entropy principle, the paper builds the Fisher information matrix which contains both the modal shape and the sensitivity infor- mation, and establishes a target optimization algorithm based on the maximum of 2- norm of Fisher information matrix. Then it constructs the objective NC value function. Sensor placement schemes are obtained by using the method with the structure in good condition are single or multiple damage condition, respectively.

关 键 词：传感器 两向正交正放网架 损伤灵敏度 Fisher信息矩阵 传感器布置 

分 类 号：TU356[建筑科学—结构工程]