一种dae系统的指标约简方法

Index reduction method for DAE system

Abstract

The invention provides an index reduction method for a DAE system. The method comprises the following steps that the DAE system is transformed into a sigma matrix; the sigma matrix breaks up into upper blocky triangular matrixes; reduction is conducted on each upper blocky triangular matrix by means of the block-separation fast reduction method, and a local optimum offset vector is obtained; the local optimum offset vectors of the upper blocky triangular matrixes are expanded to form an overall optimum offset vector of the sigma matrix. According to the block-separation fast reduction method and the parameters-containing cross section reduction method, the reduction efficiency of the DAE system is improved, and the system optimum offset vector is obtained.
本发明提供了一种DAE系统的指标约简方法,该方法包括以下步骤:将所述DAE系统转化为∑矩阵;将所述∑矩阵分解为块状上三角矩阵;运用分块快速约简方法对每块所述上三角矩阵进行约简,获取局部最优偏移向量;根据每个所述上三角矩阵的局部最优偏移向量扩展成所述∑矩阵的整体最优偏移向量。该方法根据分块快速约简方法和含参数横截面约简方法,提高DAE系统的约简效率,获取系统最优偏移向量。

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