一种实现无扰切换的功能块系统及其着色Petri网建模

摘要

A colored Petri net (CP net) based approach for modeling the Function Block (FB) is presented, which is base for implementing the bumpless t ransfer. In t his approach, a basic FB is represented as a CP net model, in which the internal variable and external message are defined, and when FBs are integrated to const ruct a control system, their CP model is are added accordingly. Analysis indicat es that this model not only graphically simulates the control system, but also n ormally analyzes the mechanism of no-disturb control transfer.%提出了基于着色Petri网(CP网)的功能 块集成模型。该模型采用模块化、面向对象的建模思想，分别以一个CP网来描述不同的功能 块，在每个CP网内部定义了内部变量和外部消息。当利用功能块构造控制系统时，相应地把 代表它们的CP网集成在一起，并且通过消息传递，协调功能块之间的作用关系，共同完成控 制系统的功能。