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出 处:《海军工程大学学报》2008年第4期33-38,共6页Journal of Naval University of Engineering
基 金:国家自然科学基金重大研究计划面上项目(90716026)
摘 要:绝大多数Petri网在变迁发生后前集库所会失去标记,不便于表达一个条件一旦具备将永远具备的情形。针对该问题,基于0-1标识与变迁发生后其前集不失去标记的思想,提出了信息/求解扩展Petri网系统(I/S系统)。给出了I/S系统的相关定义、部分基本性质、矩阵表示、求解发生权向量的求法和状态方程。最后,给出了以I/S系统表示的几种常见滑模变结构控制策略的设计过程,该例显示了I/S系统的模型表达能力。In most Petri nets, a place will lose its token when its post transaction is fired, which makes it inconvenient to explain that a condition will be true forever once it is true. Hence anew type of extended Petri net known as information/solver system (I/S-system) was proposed. In I/S-system, marking value is boolean; every place will hold its token forever once it gets a token. The fundamental definition, property, matrix expression, algorithm for vector of solvers and state equation of I/S-system were given. I/S-system model of several common design processes of sliding mode control was of- fered as an example. The example shows the modeling ability of I/S-system.
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