matrix n. (pl. matrices 或matrixes) 1.【解剖学】子宫;母体;发源地,策源地,摇篮;【生物学】衬质细胞;间质;基质;母质。 2. 【矿物】母岩;脉石;【冶金】基体;【地质学;地理学】脉石;填质;杂矿石。 3. 【印刷】字模;型版,纸型;铸型,阴模。 4.【阵】(矩)阵,方阵;母式;【物理学】间架;【无线电】矩阵变换电路。 5.【染】原色〔红黄蓝白黑五种〕。 the matrix of a nail 【解剖学】指甲床。
By means of error analysis of recursion process of precise integration , it is found that the essential reason of obtaining the high precise numerical results of exponential matrix in the precise integration method is that the relative error of numerical computation is not enlarged in a whole recurrent process 通过对精细积分法递推过程的误差分析,发现该方法能获得高精度数值结果的根本原因是:数值计算的相对误差不随递推过程的进行而扩散。
This paper suggests that the integral of the state equation is evaluated directly through the exponential matrix based on the pim , thus several series solutions are obtained . utilizing the symmetry of matrices and the idea of substructure , the computational precision and efficiency of the pim are improved 本文深入研究精细积分及动力方程算法,基于指数矩阵计算、 pade逼近理论,在时域上对非线性动力状态方程直接积分求解,构建若干系统响应求解格式,并分析了算法精度、效率;通过矩阵变换,利用矩阵对称性、子结构等方法改进精细积分计算效率。