On Optimal Sensor Placement Criterion for Structural Health Monitoring with Representative Least Squares Method

摘要：

A novel sensor placement criterion is proposed for structural health monitoring after five influencing criteria are critically reviewed.The objective of the proposed criterion is to achieve best identification of modal frequencies and mode shapes through almost unbiased estimation of modal coordinates.The proposed criterion derived by the Representative Least Squares method depends on both the characteristics and the actual loading situations of a structure.It selects sensor positions with the best subspace approximation of the vibration responses from the linear space spanned by the mode shapes.Furthermore,the connection between the Effective Independence and the approximate Representative Least Squares estimator is obtained through matrix perturbation analysis.It is found that the Effective Independence is a step-by-step approximation to that of the Representative Least Squares criterion.

关键词： Optimal Sensor Placement Structural health monitoring Representative least squares method Effective Independence Condition number

作者: Dong-Sheng Li Hong-Nan Li Claus-Peter Fritzen

作者单位: Department of Civil Engineering,Dalian Univ.of Tech.,Linggong RD.2,Dalian 16023,China University of Department of Civil Engineering,Dalian Univ.of Tech.,Linggong RD.2,Dalian 116023,China University of Siegen,Mechatronics,Paul-Bonatz Str.9-11,D-57076 Siegen,Germany.

会议类型: 国际会议

会议名称: The 8th International Conference on Damage Assessment of Structures(DAMAS 2009)(第八届结构损伤评价国际学术会议)

会议地点: 北京

会议语种:英文

页码: 383-391

在线出版日期: 2009-08-03（万方平台首次上网日期，不代表论文的发表时间）