查询词典 Petri

One is by knowledge Petri net First AND/OR graph was evolved by calculating cut set of relationship Matrix of parts which shows the assembly relation between the parts. Then the KPN was generated with AND/OR graph automatically. Running the KPN, an optimum assembly sequences was obtained last. The other is by Hopfield neural network.

一是利用知识PETRI网对装配过程进行建模，并自动规划出最佳装配序列的方法；这种方法首先根据产品装配的关联图，利用割集计算，自动生成产品装配的与/或图，由产品装配的与/或图转化成知识PETRI网，然后，运行此知识PETRI网，便可得产品的最佳装配序列。

To prepare studying hierarchical intelligent control system of material flows in mineral processing plant further, picturing, transition rulers, analytic methods, relevance matrix and dynamic equation, defect in applying of Petri network, fall short of orient object models applying are discussed after technology of formalization model built, non-formalization built and compound model. And Petri network system with time attribute is expanded opening network system with interface of input and output. The network system expanded with all attributes of basic Petri network model has hierarchy and recursiveness, can be analyzed with mathematical tools of network system and can deal with concurrent and asynchronously also.

为了对选矿厂生产物流递阶智能控制系统的进一步研究奠定基础，本文在讨论了形式化建模技术、非形式化建模技术和复合模型的基础上，研究和分析了Petri网的图形表示、变迁规则、分析方法、关联矩阵与动态方程、Petri网模型应用中的缺陷、面向对象模型应用中的不足，并把采用赋时的Petri网系统扩展成为对外界有输入和输出接口的开放网系统，扩展后的Petri网具有递阶性和递归性，同时保持基本Petri网的所有性质，使模型仍可采用网系统数学工具进行分析，并可处理生产物流系统中的并发性和异步性。

In order to solve the route search problem in stochastic Petri net, the feature of reliability is introduced into each transition, and suppose that the lifetime distribution of a transition obeys the Weibull distribution model, then a memorial stochastic Petri net with reliability whose elements can record a little information is proposed based on the ant colony optimization algorithm and features of the memorial stochastic Petri net.

为了解决随机Petri网的路径寻优问题，在变迁中引进了可靠性的特性，并假设变迁的寿命服从威布尔分布模型，然后根据蚁群算法和时间Petri网的特点提出了一种网络元素可以记录少量信息的带可靠性的记忆时间随机Petri网。

To use the Petri Nets graphical modeling sententiously and intuitively, the thesis is about the way to using Visual C++ development environment to develop a constitute and debug tool found on the Petri Nets GUI. The essential request is the stabilization of running, the simplicity of operation, the friendliness of the User Interface, and the utility and sufficiency of the functions. Users can draw and edit the Petri Nets model diagram through the standard GUI, and also can observe and debug the migration. It is also helpful to promote the applications.

为了更好的利用Petri网简洁、直观的图形建模方法，本论文旨在通过Visual C++开发环境开发一款基于图形界面的Petri网模型建立和调试工具，其基本要求是：运行稳定，操作简单，界面清晰友好，功能实用够用，用户可以通过标准图形界面的方式绘制，编辑Petri网模型图，并对其迁移过程进行观察和调试，便于推广应用。

To use the Petri Nets graphical modeling sententiously and intuitively, the thesis is about the way to using Visual C++ development environment to develop a constitute and debug tool found on the Petri Nets GUI.

为了更好的利用Petri网简洁、直观的图形建模方法，本论文旨在通过Visual C++开发环境开发一款基于图形界面的Petri网模型建立和调试工具，其基本要求是：运行稳定，操作简单，界面清晰友好，功能实用够用，用户可以通过标准图形界面的方式绘制，编辑Petri网模型图，并对其迁移过程进行观察和调试，便于推广应用。

Fuzzy logic rules are used in expert judgement for obtaining the fuzzy Petri net, on which basis a model is built for evaluation of weapon equipment. Then artificial neural network is introduced into the Petri net. Steepest Descent Method is used for training the parameters of fuzzy Petri net model. As a result, the model has great learning capability and high adaptability to complicated environment.

将模糊逻辑规则应用到专家评判中得到模糊Petri网，建立基于模糊Petri网的武器装备效能评估模型，并在此基础上将人工神经网络引入到模糊Petri中，在模糊Petri模型上，用迭代最速下降法对模型的参数进行学习和训练，经过学习和训练的模型具有很强的学习能力以及对外界环境的自适应能力。

In the middle of this paper, six kinds of basic Petri net flow modules which conform to Workflow model are put forward. The method of transforming Petri net flow model to XPDL and constructing Petri network using XPDL is given. These establish the base for different modeling method using Petri net. And these extend EJB task engine and Subprocess task engine of distributed Workflow Management System——Flowstep.

文章中心部分是提出了符合工作流元模型的六种基本Petri网流程模块，给出了由Petri网流程模型向XPDL转换的方法以及由XPDL构造Petri网的方法，为不同的建模方法利用Petri网分析技术奠定了基础；扩展了分布式工作流管理系统Flowstep的EJB任务引擎和子流程任务引擎。

Because the Petri net can describe intuitionally system characteristics, such as the system's dynamic, asynchronous, concurrent and so on, it very suits to describe the Discrete Event Dynamic System such as logistics system.

本文首先对制造企业内部的几个基本生产过程中的物流进行了分析，分别建立了拉动式生产系统Petri网物流模型、推动式生产系统Petri网物流模型、流水线生产的Petri网物流模型及混合生产线的Petri网物流模型等。

Oriented to the knowledge processing in IHS, in order to design a tume Petri nets efficient algorithm for temporal knowledge reasoning the dissertation makes full use of the efficiency of Petri nets for knowledge processing and the model of train group operation.

针对智能混杂系统的知识处理问题，在已经建立的列车群运行系统的对象Petri网模型的基础上，本文利用Petri网对知识的处理能力，给出了一种有效的时间Petri网的时间知识推理算法，由于算法中引入模糊时间区间的操作、保留了最少数量的生成图节点，所以该算法比已有的算法效率高并可处理时间区间的不确定性问题。

This thesis proposed Agent-based Petri net Modeling concept on the base of object-oriented Petri net modeling, which greatly decrease the complexity of Petri net models.

本文在面向对象的Petri网建模思想上提出了基于Agent的Petri网建模思想，大大降低了模型的复杂性。

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在美国，慢性酒精中毒，肝炎是最常见的。

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如果有任何问题，你可以随时联系我。