基于过渡矩阵的振动模态参数整体识别正交多项式算法  

GLOBAL IDENTIFICATION ALGORITHM OF VIBRATION MODAL PARAMETERS BY ORTHOGONAL POLYNOMIALS BASED ON TRANSITION MATRIX

作　　者：赵相松[1] 徐燕申[1] 彭泽民 

机构地区：[1]天津大学机械学院

出　　处：《机械工程学报》1999年第3期78-80,84,共4页Journal of Mechanical Engineering

基　　金：天津市自然科学基金

摘　　要：对正交多项式的振动模态参数整体识别方法进行了研究。针对Ｒｉｃｈａｒｄｓｏｎ整体识别方法中确定有理分式的分母多项式系数的错误，提出了基于过渡矩阵的正交多项式整体识别新算法。采用该法可显著提高模态参数的整体识别精度。The global identification algorithm of orthogonal polynomials for vibration modal parameters is studied. A new global identification algorithm based on transition matrix is raised to correct the error of determining the polynomials' coefficients of the rational fraction's denominator in the algorithm invented by Richardson. Using the new algorithm, the higher precision of the global identification of modal parameters is obtained.

关 键 词：振动模态 参数整体识别 正交多项式 算法 

分 类 号：TH113.1[机械工程—机械设计及理论]