Taxonomy of Subnets in Petri Net and their Normalization
Petri网中子网的分类与规范化研究

The environment, interface and border of subnet were researched, corresponding definitions were given. On the analysis of the specialties of different subnets, they were classified into different types such as T-subnet, P-subnet, TP-subnet, PT-subnet and so on. The concept of interface standardization and subset normalization were present. The results help to the research of subnet based structural system designing and its corresponding application.