机构地区: 中山大学工学院应用力学与工程系
出 处: 《中山大学学报(自然科学版)》 2000年第4期23-26,共4页
摘 要: 介绍了几种非自伴随系统矩阵发生小改变时 ,求解摄动矩阵特征值的近似方法 .重点讨论了基于广义Rayleigh商和迹理论的近似计算方法 ,给出了各种方法的误差阶 .通过算例对各种方法的计算精度进行了比较 . It describes several approximation methods that can be applied to compute the eigenvalues of the perturbed matrices. Approximations based on the generalized Rayleigh quotient and the trace theorem are presented. The error order and accuracy of these methods are analyzed. An illustrative example is given to verify the theoretical analysis.