The general expressions of kinematic model of 3-dimensional VGCN are presented, which is the equation constraint in optimization of tolerance values.

建立了三维变动几何约束网络的运动学模型的一般表示式，从而构成了公差大小优化的等式约束。

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For the stochastic system of the dynamic equation and the kinematic constraint, the upper and lower bounds on its information matrix are given, via eigenvalue analysis.

针对运动约束与运动方程构成的系统，利用特征值分析方法给出了其信息矩阵的上下界限。

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