It improves the communication reliability in fms ( flexible manufacturing system ) , which makes use of the broadcast and one - to - one function of mailslot combined with the windows socket , achieves the purpose that one equipment failed would not result in an end of the whole system 本文所提出的一种新的采用邮槽与套接字相结合的通信方法，提高了fms (柔性制造系统)中通信的可靠性，利用邮槽的广播和一对一通信功能与套接字相结合，达到了不因一台设备故障导致全系统失效的目的。
Fms ( flexible manufacture system ) is a kind of advanced manufacture technology and system , which integrate the computer technique the number control technique the automation technique the producing management technique and information technique , and it has become a modern mode of the machine manufacturing , and could have achieved the maximal benefit in the produce of various kinds and medium or little batch Fms (柔性制造系统)是一种将计算机技术、数控技术、自动化技术、生产管理技术、信息技术等集成于一体的先进制造技术和系统，并已逐渐成为机械制造业的一种现代化生产模式，对于多品种、中小批量生产可以获得最大的经济效益。
Computer integrated manufacturing system ( cims ) is a front research field of high technology , which has been developed rapidly for many years . flexible manufacturing system ( fms ) is an important subsystem of cims . in order to use fms effectively , it shows that scheduling is important 计算机集成制造系统（ computerintegratedmanufacturingsystem ，简称cims ）是几年来迅速发展的一个高技术前沿研究领域，而柔性制造系统fms （ flexiblemanufacturingsystem ）是其中一个重要的子系统，为了尽可能的使用fms必须依赖于一个好的fms调度系统，而此系统的核心是最优调度算法，也就是加工系统中的排序问题。
The typical des includes the manufacturing system ( especially fms and cims ) , system scheduling , communication network , traffic control system , random service system and computer operating system and so on . the research aim of des is two - fold : one is to provide tools for performance analysis , the other is to offer supervisory control methods for des 从本质上讲，这类系统是一个人造系统，典型的有制造系统(尤其是柔性制造系统fms 、计算机集成制造系统cims ) 、系统调度、通信网络(系统) 、交通控制系统、随机服务系统、计算机操作系统、军事上的c _ 3i系统等。
Petri net is good at reflecting systems " logical relationship and suitable to conduct time . it can also model systems on variable logica levels and now is used the most in modeling fms . the paper develops a petri net model of the high - pressure boiler tube production line in baosteel tube branch and a simulator of this system based on matlab / stateflow Petri网擅长反映系统中的逻辑关系；便于引入时间因素；能在不同的抽象层次上为系统建模，是目前柔性制造系统建模中采用最多的方法之一，本文建立了宝钢钢管分公司高压锅炉管精整线的petri网模型。
Furthermore , combined the execution rule of petri nets and the search algorithms of tree , an innovative scheduling method is proposed by applying a heuristic search to the state space of petri nets . specially , by introducing heuristic function , depth - first and width - first is mixed in the search course ; thereby a feasible solution can be generated in a reasonable amount of time 其次，在所得柔性制造系统petri网模型的基础上，通过把树的遍历算法与petri网的运行规则相结合，提出了一种启发式调度算法，通过在算法中引入反映问题特征的启发函数，把广度优先和深度优先搜索有机地结合，使得该算法能够在合理的时间复杂度内得到满足精度要求的优化调度。
Fms is an advanced technique of high investment and risk . it is also a sophisticated automatic system consisting of material flow and information flow . fms can exert its potential only if it is fully studied in its designing period , therefore it is important to supply desiding fundition by simulating the system 柔性制造系统是一项投资大、风险高的高新技术，是一个由物流和信息流组成的技术密集的、复杂的自动系统，要充分发挥其潜在优势，就必须在它的设计规划阶段对其进行全面深入的研究，因此采用仿真技术为系统提供必要的决策依据是十分重要的。
Machine vision is suited for the development and need of modern manufacturing and it has wide application foreground . this thesis is based on the cooperation project fms online part ’ s automatic recognizing system for an enterprise of chengdu . to solve the problem of calling correct nc program automatically , real - timely for different online part in fms , the research of fms on - line parts recognizing system worked on machine vision was done 本文以与成都某机床股份有限公司的合作项目“柔性制造岛在线零件的自动识别”为背景,针对柔性制造系统( fms )中存在不能自动识别在线零件而正确调用相应程序进行加工这一问题,开展了基于机器视觉的柔性制造岛在线零件识别系统的研究。
With the development of modern science and technology , it is more and more necessary to apply the advanced manufacturing technology with higher precision , efficiency and intelligence in the modern industrial manufacture . machine vision technology has much virtue such as rapid , repetition , intelligent , non - contact and with strong anti - jamming ability . it is used in the flexible manufacturing system ( fms ) and increases the systems ’ flexibility , automatization and intelligentizing level 随着现代科技的发展,现代化工业生产对制造精度更高、效率更快、智能化更高的先进制造技术要求越来越迫切;机器视觉技术具有快速性、可重复性、智能化、非接触、现场抗干扰能力强等优点,机器视觉技术应用于柔性制造系统中大大提高了系统得柔性化、自动化、和智能化水平,适应了现代制造业的进步和发展要求,在实际应用中显示出了广阔的应用前景。
In this paper , a structural methodology for bottom - up synthesis of petri nets for 1c flexible manufacturing systems is presented for the first time . with the help of a guarantying policy of liveness , a live , bounded and reversible final model can be obtained by merging different submodels through what is called autonomy subnet sharing among them . to demonstrate the application of the method , a flexible manufacturing system of integrated circuits is modeled and analyzed using the proposed theory 本文首次提出了一种面向集成电路柔性制造系统的基于共享“自治子网”融合和活性保证策略的“至底向上”的petri网结构化建模方法，在理论上证明了该方法保证所得模型的活性、有界性和可逆性，并且利用该方法与着色petri网结合，对一个集成电路柔性制造系统进行了全面的建模和分析。
