PC/104总线工控机及其在饲料配料控制中的应用

通过一个应用实例来说明ＰＣ／１０４总线工控机不仅在结构、硬件、软件上与标准ＰＣ总线工控机完全兼容，而且由于采用模块化设计方法使之体积更紧凑、可靠性更高、功耗更低。     

自动化专业的学科属性及主干课程设置探讨

本文对自动化专业的学科属性、主干课程设置、教学改革建议等进行了讨论，提出了加强数学和工程背景基础，以适应未来社会需求等建议，对教师素质的提高也进行了探讨。     

A Scalable Interconnection Network Architecture for Petaflops Computing

Extrapolating technology advances in the near future, a computer architecture capable of petaflops performance will likely be based on a collection of processing nodes interconnected by a high-performance network. One possible organization would consist of thousands of inexpensive, low-power symmetric multiprocessor (SMP) nodes. Each node will inject data into the interconnection network at a very large rate and consequently, the interconnect scheme is one of the most crucial design issues affecting system performance. This paper describes the 2D simultaneous optical multiprocessor exchange bus (2D SOME-Bus) which has the potential to become the basis of a high-end computer architecture capable of petaflops performance. It consists of N horizontal, N vertical 1D SOME-Bus networks, and N ² nodes. Each node is connected to one horizontal and one vertical 1D SOME-Bus. Each of N nodes connected to one 1D SOME-Bus has a dedicated broadcast channel and an input channel interface based on an array of N receivers monitoring all N channels and allowing multiple simultaneous broadcasts. In the 2D SOME-Bus, messages being broadcast on one Bus can be broadcast in a cut-through manner on one or more Buses in the other dimension. This paper describes the optoelectronic devices and technology which make the 2D SOME-Bus possible, and the network interface organization. It also presents simulation results which compare the performance of the 2D SOME-Bus, the 1D SOME-Bus, the crossbar and the torus under the message-passing paradigm.     

基于单片机的单相SPWM变频器设计

介绍了基于单片机 80C196KB ,采用不对称规则采样法所实现的单相SPWM变频器。另外 ,给出了硬件电路与软件程序     

现场总线Profibus-DP主从站数据交换探讨

介绍了Profibus-DP网络的基本特性、结构、主从通信原理。然后结合奥地利贝加莱公司(B&R公司)现场总线模块对主从站Profibus-DP数据交换的实现方法作了详细地讨论。     

应用三维实体模型实现车削动态平衡

运用AutoCAD,Pro/ENGINEER提供的三维实体建模及模型的质量特性分析功能,建立被加工零件的三维实体模型,准确计算其质心相对车削回转轴的位置;根据平衡车削离心力的要求,设计夹具形状、偏心质量;建立夹具三维实体模型,调整夹具非平衡质量形状,确定夹具质心位置,使车削过程中被加工零件、夹具产生的离心力相平衡,实现高速车削;采用装夹定位零件的质心的方法,实现高效生产。     

采用BOF-LF-CC工艺试制20MnVB钢

借鉴国内钢厂电炉工艺生产20MnVB钢的成功经验，设计出20MnVB钢的内控成分并强化转炉终点控制、LF加钛保硼工艺、低过热度浇注、合理的轧钢工艺等，实现了BOF-LF-CC工艺生产汽车用优质含硼钢。     

基础理论与宏观调控

说明了经济理论的层次性，简述了基础性经济理论、应用性经济理论、政策性经济理论的特点，同时分析了基础理论与应用理论、基础理论与宏观调控之间的关系，从理论上剖析了政府干预与市场机制的矛盾运动。     

基于波谱分析的棉纺跨工序不匀计算机诊断

针对棉纺条干不匀的波谱分析法的不足，分析了基于波谱分析的跨工序不匀计算机诊断的基本原理，结合生产实际，设计了跨工序不匀诊断的具体算法，并编程实现。     

MC68HC908QY4单片机在炉温控制系统中的应用

本文介绍了MC68HC908QY4单片机控制的炉温控制系统，对系统的基本构成与工作原理进行了研究，并对数学模型与算法进行了分析，设计了软硬件．同时给出了部分硬件电路图与软件流程图。