查询词典 positive definite

According to the characters of symmetrical and positive definite matrix, inverse matrix is calculated approximately.

该算法可明显地提高恢复质量，并有效消除图像恢复的过度锐化现象。

When a common positive definite matrix can not be found to design fuzzy model-based controller, the improved adaptive reconfigurable control scheme based on fuzzy model and neural network is proposed.

同时，当现有的基于模型的模糊控制器无法求解时，文中给出了一种改进的基于模糊模型和神经网络的自适应重构控制方案。

However, a great lot of fuzzy rules are needed to approximate a complex nonlinear system, which can lead to a great lot of LMIs related to the number of fuzzy rules. In this case, positive definite matrix P might not exist.

可是，当需要大量的模糊规则来逼近一个复杂的非线性系统时，就导出与模糊规则数有关的大量LMIs，这可能会导致正定矩阵P不存在。

It is the conclusion that the algorithms are very effective in accuracy and can avoid the major defect of non—positive definite coefficent matrix of static analysis based on conventional mixed models.

这两种模型除具有很高的计算精度外，还避免了一般空间混合元静力分析中系数矩阵不正定的重要缺陷。

Compared with former stability analysis approaches, this approach can not only overcome the defect of finding a common positive definite matrix but also reduce the number of solving Lyapunov inequalities.

较之以往稳定性判定方法，此方法不仅克服了需要寻找一个公共矩阵的不足，而且也减少了求解Lyapunov不等式的个数。

Furthermore, the sufficient conditions for convergence were given when the coefficient matrix A is a Hermite positive definite matrix or Mmatrix respectively.

给出了系数矩阵分别为Hermite正定矩阵和协矩阵时算法收敛的充分条件。

By the proposed fuzzy adaptive robust: controller there is no need to find a comrnon positive definite matrix satisfying matrix Lyapunov equation.

整个控制方案在结合所有的局部线性状态反馈控制器的基础上，引入了基于自适应神经网络的鲁棒控制器。

Compared with former stability analysis approaches, this approach can not only overcome the defect of finding a common positive definite matrix but also reduce the number of solving Lyapunov inequalities largely.

较之以往稳定性判定方法，此方法不仅克服了需要寻找一个公共矩阵的不足，而且也减少了求解Lyapunov不等式的个数。

But also extend and improve the recent literature on the lower bound estimate of the determinant modulo about the Hadamard product of the complex generalized positive definite matrix.

而且也推广和改进了最近有关复广义正定矩阵的Hadamard乘积的行列式的模的下界估计文献。

Finally, when the decomposition is proceeding to a symmetric positive definite matrix, the pivot may be very small or even negative.

除预条件外，尚有许多其它的预处理技术将原矩阵化为性质较好矩阵，预对称化即是其中之一。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。