quadratic space

An independent modal space control technique combined with optimal linear quadratic regulator was applied to control the first lower modes composing of the dynamic response of bridges.

采用独立模态空间控制法，通过独立控制少数模态实现了对移动车载作用下多跨梁振动的主动控制。

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In figures of the quadratic functions, the method of space alternate coordinate has been used. A special point has been selected as the origin and a representative vector has been selected as the Z axis of new coordinate system.

对于属于二次函数的图形，本仿真程序采用空间坐标变换的方法，选择特殊点作为新坐标系的原点，将有代表性的矢量作为新坐标系的Z轴。

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Invertibility of an Operator Appearing in the Linear-Quadratic Optimal Control Problems in a Hilbert Space

Hilbert空间线性二次最优控制问题中的一个算子的可逆性

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Quadratic mutual information was used as the criterion for feature variable selection in pattern recognition problems, and the geometric meaning of QMI criterion in the reproducing kernel Hilbert space was analyzed.

将二次互信息（mutual information）用作模式分类问题中特征选择的准则，分析了该准则在再生核希尔伯特空间中的几何意义。

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Special Surfaces about the Gauss Curvature to be a Quadratic Function in 3-Dimentional Minkowski Space

三维Minkowski空间中高斯曲率为已给二次函数的几个特殊曲面

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