【摘要】 Petri网是一种信息流模型,广泛应用于离散事件动态系统建模及控制领域.随着CPLD、FPGA等可编程逻辑器件的出现,为Petri网的硬件实现提供了可能.从Petri网的原理出发,根据库所与变迁的本质特点,提出了一种Petri网硬件实现的框架,并详细阐述了如何用硬件描述语言VHDL实现C/E系统、P/T系统以及T-时延等几种典型的Petri网系统.最后用一个带有时延的P/T系统来验证此种方法的正确性.采用这种方法对离散事件动态系统控制器的设计,以及片上并行控制器、多处理器芯片的设计都具有十分重要的意义.更多还原

【Abstract】 Petri net is a model of information system which is widely used in discrete systems and control areas. With the advent of PLD, such as CPLD and FPGA, it is possible to implement a Petri net with hardware. Based on the theory of Petri net and the intrinsic relation between places and transitions, the implementation of Petri net by using hardware is presented . Also the implementation of some classes of Petri net, such as C/E systems, P/T systems and T-timed systems, are presented. Finally an example is given to validate the method. This method is of significance to the design of DEDS controllers, especially to that of SOC parallel controllers and multi-processor chips.更多还原