结合定子磁链控制，提出异步电机基于定子磁链幅值恒定的电压矢量控制方案，并对该方案的非线性局限进行了分析。

Then a voltage vector control scheme for induction motors based on constant stator flux is presented and it's nonlinear limitations are analyzed.

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二值点阵图的矢量化是图像处理的一个重要课题，现有的矢量化方法在提取建筑物轮廓信息时都存在局限性。

The vectorization for the dot matrix image of binary is an important work in image processing. Existing vectorization methods are not good at extracting building profile information.

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在分析已有混沌同步方法所存在局限性的基础上，介绍了一种新的混沌同步方法——基于矢量空间线性可逆性变换下的混沌同步方法。

By analyzing the limitation of the existing chaos synchronization methods, a new method based on recombining system by a linear reversible transform was introduced.

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