混杂生产线系统性能分析方法研究

发布时间：2019-05-24 14:07

【摘要】：专业化分工以及现代化市场发展使得生产系统网络化特征越来越明显，从生产部门到供应链网络，不同层次和组织间的交流、关联、制衡等关系复杂而多变，，构成了具有自我响应且随机动态波动的复杂网络。多品种、小批量生产方式正成为制造业主导。为了提高系统生产效率就需要对系统参数进行广泛研究，由于制造系统中存在许多可控或者不可控的随机事件，所有制造系统一般来说都是混杂系统。可以说，对混杂系统进行性能评估及优化控制是生产规划和管理中重要的研究问题之一。本文正是通过两类不同的性能分析方法对混杂生产线系统进行性能评估，并以此为基础，研究该混杂系统的混杂自动机建模与优化控制方法，做出的主要工作以及获得的主要研究成果如下： 1.介绍了本文的研究背景，按照不同研究模型、不同生产网络结构的发展阶段，介绍了一些关于不可靠制造系统以及混杂系统的基本概念，并进行了简单的回顾和总结，并提出了当前存在的问题和以后的发展方向。 2.对设备具有不完全故障模式的双设备模型，在离散模型基础上，提出了当有限缓冲区为不可靠时，系统性能参数评估的方法，通过状态概率间存在的拟生灭过程等式给出了一种有效计算系统生产率和平均缓冲区水平的方法，克服了算法复杂性的难题，并通过程序仿真证明了系统参数对性能评估的影响，由仿真数据的差异得到了影响系统性能的主要因素和参数特征。 3.提出了流水线生产线系统的综合分析方法并推导出相应的公式。不同于传统的生产模型，该生产线的缓冲区不可靠且具有多种随机故障模式，因此这种方法能够对更复杂的生产线系统进行性能分析。 4.基于生产线连续和离散并存的混杂特征，提出了混杂系统的建模及其优化控制方法。研究了加工单元混杂自动机模型，对满足一定产量情况下最大化机器利用率的混杂优化控制进行了研究，提出了基于蒙特卡洛法的性能优化仿真计算方法。最后，对某有限缓冲容量串行生产线进行了仿真计算，仿真结果验证了该研究方法的可行性和有效性。
[Abstract]:The specialization division of labor and the development of modern market make the network characteristics of production system more and more obvious. From the production department to the supply chain network, the communication, correlation and checks and balances between different levels and organizations are complex and changeable. A complex network with self-response and random dynamic fluctuation is constructed. Multi-variety, small batch production mode is becoming the leading manufacturing industry. In order to improve the production efficiency of the system, it is necessary to study the system parameters extensively. Because there are many controllable or uncontrollable random events in the manufacturing system, all manufacturing systems are generally hybrid systems. It can be said that performance evaluation and optimal control of hybrid systems is one of the important research problems in production planning and management. In this paper, the performance of hybrid production line system is evaluated by two different performance analysis methods, and on this basis, the hybrid automaton modeling and optimization control method of the hybrid system is studied. The main work done and the main research results obtained are as follows: 1. This paper introduces the research background of this paper, according to different research models and the development stage of different production network structure, introduces some basic concepts of unreliable manufacturing system and hybrid system, and makes a simple review and summary. The existing problems and the development direction in the future are put forward. 2. On the basis of the discrete model, a method for evaluating the performance parameters of the system when the finite buffer is unreliable is proposed for the dual device model with incomplete fault mode. Based on the equation of quasi-birth and death process existing between state probabilities, an effective method for calculating the productivity and average buffer level of the system is presented, which overcomes the problem of complexity of the algorithm. The influence of system parameters on performance evaluation is proved by program simulation, and the main factors and parameter characteristics affecting system performance are obtained from the difference of simulation data. 3. The comprehensive analysis method of pipeline production line system is put forward and the corresponding formula is derived. Different from the traditional production model, the buffer of the production line is unreliable and has a variety of random fault modes, so this method can analyze the performance of more complex production line systems. 4. Based on the hybrid characteristics of continuous and discrete production lines, the modeling and optimal control method of hybrid systems are proposed. The hybrid automaton model of machining unit is studied, and the hybrid optimization control which maximizes the machine utilization under certain output is studied. A performance optimization simulation method based on Monte Carlo method is proposed. Finally, the simulation calculation of a serial production line with limited buffer capacity is carried out, and the simulation results verify the feasibility and effectiveness of the research method.
【学位授予单位】：兰州理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TH166

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