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过程输入输出

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It has stronger I/O interface to connect with industrial process compared to the common computer and has basically substituted of the logical control of traditional relay and contact devices, thus become the basic installment in automation control system.

从广义上讲,PLC是一种计算机系统,比一般计算机具有更强的与工业过程相连接的输入输出接口,已基本取代了传统的继电器和接触器的逻辑控制,并成为自动化控制系统的基本装置。

This region has been put fourth regional groundwater resource evaluation from year 1956 to 2002. These evaluation all take Quaternary groundwater resources as exploited study objectives, evaluate plains and montanic groundwater separately, didn"t consider overall portray groundwater hydrological system relation between input and output, couldn"t simulate groundwater hydrological process with circumstance fluctuation. Therefore, it"s necessary to reevaluate Sanjiang Plain"s groundwater resources on the basis of predecessors study.

该区自1956年至2002年主要进行了四次区域性的地下水资源评价工作,这些评价均以第四系地下水资源为研究对象,以开发为目的对平原区和山丘区地下水资源分别评价,没有考虑全面刻画地下水文系统输入输出的转化关系,无法模拟变化环境下的地下水文过程,因此,有必要在前人研究的基础上,重新评价三江平原地下水资源。

Discussing some problem such as selection of the input and output, sampling frequency, testing signal and pretreatment of data in detail, tabling a proposal of methods of collecting necessary information for characteristic of process .

详细讨论了诸如输入输出的选择、采样频率、测试信号和数据预处理等问题,提出了适于收集过程特性必要信息的实验方法。

The ESD protection scheme is implemented using ground - referenced muhifinger thyris- tor- type devices optimized for 1 the input/output protection, 2 the power supply clamp, and 3 the internal sensors' electrodes during the micromachining process.

这个静电放电防护结构采用了以地端为参考电位的,多指条晶闸管类器件,包括以下几个部分1输入/输出防护,2电源钳位3微机电处理过程中的内部传感器电极。

Thus it can deal with not only practical input and output performance, but also the practical firing logic and the changing of voltages and currents of thyristors.

该模型计及了六脉冲交交变频器的实际物理结构及运行过程,不仅可以反映输入输出性能的实际情况,而且可以得到内部各晶闸管的实际触发逻辑和电压、电流的变化规律。

Among lots of research results, the method of describing stiction of pneumatic control valve s and detecting stiction developed by Kano is simple and effective.

但是,Kano 气动控制阀静摩擦模型存在着不足,本文指出了该模型的缺陷所在,并给出了改进方案,使得模型的输入输出与物理过程完全一致;针对控制阀静摩擦的统计检测方法参数较多的特点,系统分析了影响检测结果的因素,总结了检测参数的指导原则。

Then the algorithm was used to get the seven parameters of viscosity model of W-Ni-Fe heavy alloy and 316L stainless steel feedstock, which provide the necessary material data for quality forecast of mold core part made of stainless steel and heavy alloy tungsten ball, and for optimal design of mold and process parameters, which establishes the foundation of material database of MIM. In the research of visual simulation software development, in order to build the software system model and flow analysis algorithm based on Cross-WLF viscosity model, and realize functions such as pre-processor, solver, parameter regress, data management, graph operations, some advanced software methods as OOSE (Object Oriented Software Engineering) and UML were applied to set up user model, static model and dynamic model of MIM simulation software. These models describe system function, event flow, structure and relation of classes, object interaction, structure of database and I/O file format.

在MIM可视化仿真软件开发方面,为了建立软件系统模型及基于Cross-WLF粘度模型的流动分析算法,实现软件的前处理、求解器、参数拟合、数据管理和图形操作等功能,将面向对象软件工程与统一建模语言技术首次引入到MIM仿真软件的设计开发中,建立了软件的用户模型、静态模型和动态模型,描述了系统的功能需求、事件流程、类的结构与关系、对象之间的通信、数据库结构和输入输出文件格式等,用Visual C++与Delphi开发工具编码实现了2维MIM充模流动过程仿真软件,方便了对薄壁零件的质量预测以及模具和工艺参数的优化设计。

During the process of steam turbine s control mode transformation,in order to get the governing valve s put-in and put-out characteristic,the governing valve s characteristic equation should be built.

在汽轮机控制方式改造过程中,为了得到DEH系统阀门管理环节的输入-输出特性,需要建立调节汽门的特性方程。

Busparallel expansion and pipeline technique are adopted to improve the average inputand output speed of recorder based on FLASH memory. 2 A concept of 'cluster' isintroduced. The using state message of each cluster is loaded in the spare area,following the target datum, to keep the pipeline sequence of multiple clusters' loading, which guarantee the average input speed of system. 3 Based on the using statemessage of every cluster, the Cluster Allocation Table established in memory enablethe system to manage the recorder flexibly in high speed, similar to a file managementsystem. 4 PowerPC 8245 based embedded system, along with Vxworks real-timeoperating system is introduced to make the system more easier to be applied to theprojects in the future.

本文所述的关键技术特点主要包括:采用了并行扩展以及流水线操作技术以提高基于FLASH芯片的存储区平均输入输出能力;引入了&簇&的概念,为了保证连续写入过程中的流水线顺序,系统向存储区加载每一簇有效数据后,紧接着还将向相应簇的空余区中加载该簇的使用状态信息;根据所有簇的使用状态信息在系统内存中建立&簇分配表&,可以支持系统快速灵活地管理存储区,即,类文件化的数据管理;采用基于PowerPC8245的嵌入式计算机硬件系统及基于Vxworks的嵌入式实时操作系统,提高了系统的整体性能及系统研发的延续性。

All the fuzzy inference are processed in parallel,and the highest speed is 1-mega per second.With convenient IO interface and reprogrammable rules.

PFLC有方便的输入输出接口和修改规则,其模糊推理过程是并行的,每时钟周期完成一次,最高时钟频率可达1MHz。

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