得到了根据插值函数来计算刚度矩阵秩的计算公式，并对几种降阶积分单元进行了验算。
A formula based on the interpolation for the rank of the element stiffness matrix is presented, and some reduced integration elements are examined.
研究了基于积分最小二乘指标的SISO时滞系统频域辨识与频域模型降阶问题。
Based on the integral least_squares index, a new approach to frequency_domain identification and model reduction of SISO systems with delay is proposed.
与更新精细积分法相比，在实现动力微分方程降阶后，矩阵尺度和方程个数减少一半；
When the order of dynamic differential equation is reduced, the size of matrices and equations of the proposed method are only half of that of the RPTSIM.
应用推荐