基于赋时Petri 网的化工批处理建模与控制优化

分析了化工批处理过程的特点，以过程设备为核心将整个过程操作划分为若干个子进程，用赋时Ｐｅｔｒｉ网来建立以子进程表示的批处理过程，并提出启发式动态 经自救对过程进行控制。仿真结果表明，基于赋时Ｐｅｔｒｉ网模型与启发式动态 经算法的Ｐｅｔｒｉ网控制器，不仅能准确描述批处理过程的同步、并发及资源工人享关系，而且Ｐｅｔｒｉ网的运行能给出过程生产的最优控制序列。

Modeling of Batch Chemical Plant and Control Optimization Based on Timed Petri Nets

The characteristics of batch chemical plant are analyzed. The whole plant is divided into several subprocesses in the core of plant unit. Batch process plant described by subprocess is modeled by timed Petri nets, and heuristic dynamic optimization algorithm is proposed to control the plant. Simulation results indicate that the Petri nets controller based on Petri nets model and heuristic dynamic optimization algorithm, can not only describe synchronous, concurrent and shared resources situation, but also produce optimal control sequence of plant through the running of Petri nets.