摘要
整体正交多项式识别算法利用整体最小二乘方法来辨识结构模态参数 ,识别精度一般高于普通意义上的正交多项式拟合算法。本文系统的介绍了整体正交多项式识别算法发展过程中出现的三种方法 ,同时从识别精度、对噪声敏感程度和识别效率三个方面对方法进行详细的比较和评价 。
Global estimation of modal parameters using fraction orthogonal polynomials possesses higher precision than the general rational fraction orthogonal polynomials algorithm.Three global fraction orthogonal polynomials algorithms were reviewed in this paper,and their precision,efficiency and sensitivity to the testing noise were compared.Finally,based on the above comparison,the problems and future research direction of the algorithms were discussed.
出处
《强度与环境》
2000年第4期30-38,共9页
Structure & Environment Engineering
关键词
整体模态参数识别
正交多项式
振动测试
噪声
Modal analysis, + Global modal parameter estimation,Orthogonal polynomia
