过程控制

Ccording to the application research of expert system in production process of soaking pit s, this paper answers how to build the rules, facts and the processor of expert system, how to run the expert system and how to design the interface.

通过对专家系统在均热炉群生产过程中的应用研究，探讨了在线专家系统建立的规则、事实、推理机的构成，运行方式及接口设计的实现；阐述了利用能表达知识的规则进行均热炉加热方法控制和配合轧机工作规律的出钢顺序控制的方法，并与控制系统相配合，达到科学管理整个均热炉生产的目的。

In order to improve the quality of collaborative pieces and supporting pieces, Shantui supervises and controls the supply-side's quality assurance system and technology process capability from supply-side's choice for ensuring the quality assurance system sound, communicating, buying goods test and control, quality control in warranty period, information collection, analysis, feedback, certificating the improvements, optimal management of supply-side and other aspects to promote the supply-side have the capacity of continuing provide passing pieces, and establish collaborative innovation for the development of new supply chain relations.

摘 要：为提高协作件、配套件的产品质量，山推从供方选择确保质量保证体系健全、交流沟通、进货的检验控制、保修期内质量控制、信息收集、分析、反馈、改善效果的验证、供方的优化管理等几个方面对供方的质量保证体系和工艺过程能力进行监督控制，促使供方具有持续提供合格件的能力和体系，与供方建立协同创新发展的新型供应链关系。

n order to improve the quality of collaborative pieces and supporting pieces, Shantui supervises and controls the supply-side's quality assurance system and technology process capability from supply-side's choice for ensuring the quality assurance system sound, communicating, buying goods test and control, quality control in warranty period, information collection, analysis, feedback, certificating the improvements, optimal management of supply-side and other aspects to promote the supply-side have the capacity of continuing provide passing pieces, and establish collaborative innovation for the development of new supply chain relations.

为提高协作件、配套件的产品质量，山推从供方选择确保质量保证体系健全、交流沟通、进货的检验控制、保修期内质量控制、信息收集、分析、反馈、改善效果的验证、供方的优化管理等几个方面对供方的质量保证体系和工艺过程能力进行监督控制，促使供方具有持续提供合格件的能力和体系，与供方建立协同创新发展的新型供应链关系。

In each period, without the knowledge of the distribution function of the time between failures and the repair time, the PA estimate of gradient of performance function is put into the stochastic approximation algorithm which recursively optimize the threshold value of the flow control model in a manufacturing system.

在分析过程中，对故障时间和工作时间的分布不做任何假设，利用自适应控制的思想，将整个样本路径依据一定的规则分成有限长的时间段，在每一段时间内用扰动分析估计目标函数的样本导数，然后用随机逼近算法渐进地估计流程控制问题中的最优阈值，从而实现了阈值的自适应控制。

Focus of designation was fuzzy control of themost important parameters of boiling sugar — supersaturation and optimize it for a while. It is studied that DCS boiling sugar control and network communication control system, etc.

重点设计了煮糖过程中最重要的参数—过饱和度的模糊控制及对它进行的优化、对煮糖DCS系统的控制方式、控制系统网络通讯等进行了研究。

This topic take the thermoelectricity boiler control system as the research object, according to current collection control system development direction and form, design development network distributional DCS hot electric stove process examination and control system .

本课题以热电锅炉控制系统为研究对象，根据当前集散控制系统的发展方向与形式，设计开发网络化分布式DCS热电炉过程检测及控制系统。

Therefore, the research, based on computers, on the systematic design methodologies for control system software of complicated production proccsses, modular design, rapid—protypes generation, and the automatic translation from the software specification to executable cotrol software is a tidemark for the control engineers of modern maufacturing facility.

因此，依助于计算机辅助设计手段，研究复杂生产过程系统控制软件的系统化设计方法，实现模块化设计、快速原型生成、以及从软件的规格说明自动转换成可执行的控制软件，是现代制造系统中控制工程师们追求的卓越目标。

Based on study of the evolution of traditional technology of production planning and control, the paper first analyses the unfitness of these technology in the new environment and then considers the direction of the development of production planning and control as integration using Internet and intelligent.

本文从研究传统的集中控制型生产计划与控制方法的发展过程以及在新环境下不适应性出发，研究了生产计划与控制技术的发展趋势，这种趋势主要体现在通过Internet进行集成和向智能化方向发展两个方面。

The test result indicated that the new PLC plat vulcanization machine with fuzzy temperature control system can effectively vulcanize SBS, polypropylene and maleic rubber. Furthermore, It overcame the disadvantage of hard operation operate and realized the intelligent and automated control.

调试和运行结果表明本文提出基于模糊控制策略平板硫化机PLC温度控制系统适应于SBS、聚丙烯和顺丁橡胶三大产品的生产，并实现对整个生产过程的智能集成自动控制，摆脱目前硫化生产对操作工人经验的完全依赖，提高操作的自动化程度且保证分析工艺的稳定性。

Based on the basic control theory of permanent magnet synchronous motor,the function of zero voltage vector in the control is analyzed.

摘 要：介绍了永磁同步电动机直接转矩控制基本控制理论，分析了零电压矢量在控制过程中的作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。