incidence matrix

In the Attribute Petri Net, the start rule of transition and calculation of place marking are different from traditional Petri Nets. Therefore, we redefined APN transition fired condition, reachability marking set, the incidence matrix and status equation.

在属性Petri网中，变迁的启动规则以及库所标识的计算都有别于传统的Petri网，因此，本文重新定义了APN的变迁点火条件、可达标识集、关联矩阵和状态方程。

Petri net is a kind of good tool to describe concurrent and asynchronous system, there are many methods to analyze Petri net, such as reachability graph, reachability tree, incidence matrix and so on. However, its correctness can be proved by mathematics method.

Petri网是一个描述异步并发的图形工具，具有可达树、可达图、关联矩阵等多种分析方法，并且可以通过数学方法来证明其正确性；

Presents the application of network method to analyse the hydraulic characteristics of looped ducts in the VAV system and builds up a tee branch incidence matrix to calculate the local resistance factor of tee branch duct.

提出了利用网络法计算求解变风量系统中环状风道的水力特性，构造了三通关联矩阵，以解决模拟计算中三通局部阻力系数的计算问题。

Starting with incidence matrix and adjacency matrix, the definition of self-incidence matrix and self-adjacency matrix was given.

从关联矩阵和邻接矩阵出发, 给出了自关联矩阵、自邻接矩阵和对图的顶点相关分割的定义,然后利用顶点的相关分割解决图的控制问题.

When the formulation is done by hand calculation, only searching andinspecting the augmented incidence matrix are required;

在用手算分析时，它只需对网络的增广关联矩阵作搜索和观察；