时间离散随机Petri网及其在指挥控制系统中的应用

摘要

时间离散随机Petri网在对具有同步行为的系统进行建模时非常有效。指挥控制系统是一个离散事件驱动系统，同步是其主要特点之一。针对目前只用时间连续随机Petri网对指挥控制系统进行分析的特点，本文用时间离散随机Petri网对某一指挥控制系统的性能指标进行了定量计算。%Some researchers in China have used continuous time stochastic Petri net (CTSPN) to analyze the command and control system, but CTSPN cannot completely describe it because discrete events drive it and synchronization must be considered. In subsection 3.2, we use the same example analyzed with CTSPN by Chinese researchers［3,4］ and apply our DTSPN to its calculation. As in the example the degree of discreteness selected by us is low, the steady-state probability and the token probability density function computed by our DTSPN method are, as expected, close to results computed by CTSPN in Refs.［3］ and ［4］. This shows preliminarily that our DTSPN method is feasible.