HOMEOSTATIC MODELS ON PETRI NETS
The paper discusses the basic homeostatic models on Petri nets. Considered in the paper models maintain their internal resource at a certain level (depending on the laws of the system it can continuously increase, remain constant or continuously fluctuate in some limits) and by external interferences and changes restore it. When being increased the resources of the system is automatically lowered and when being decreased - increases. Modeled systems have different levels of complexity, including biological systems with cellular structure and intercellular communication. The are three main types of elementary homeostatic model on Petri nets, the first is generative and the last two are stationary. The first two are quasi-homeostatic and the last fully homeostatic. We explored their behavior and properties. Models have regenerative properties and reduplicate markers, if necessary, as determined by the conditions related to the transitions.