摘要
首先探讨了3种基于数据信息最大化准则的传统传感器优化布置方法,即有效独立法、有效独立驱动点-残差法及运动能法.其中前2种基于Fisher信息阵最大化,而第3种基于运动能最大化.然后运用结构振动模态和三样条插值模态之间的均方差最小和抗噪性能最好,这两种比较准则来确定最优的传感器设置方法.数值分析表明:这3种传感器优化布置法都是有效的,而有效独立-驱动点残差法的效果最好.
This paper discusses three different optimal sensor placement methods with the aim of maximizing the data information, that is Effective Independence （EFI） method, Effective Independence Driving - point Residue （ EFI - DPR）method and Kinetic Energy method. Two of them are based on maximizing Fisher information matrix and the other is based on Kinetic energy. Then using minimum of the mean square error between the FE model and the cubic spline interpolated mode shapes and the best capability to withstand the noise pollution keeping intact the information relative to the structure properties, the two criteria determine which is the most optimal sensor placement methods. The numerical analysis shows the three methods are all effective, but he effective independence driving- point residue method is the best optimal method.
出处
《郑州大学学报（工学版）》
CAS
2006年第4期92-96,共5页
Journal of Zhengzhou University（Engineering Science）
基金
国家自然科学基金资助项目(10072041)
