交流伺服系统在玻璃裂片机中的应用

随着运动控制技术的飞速发展，交流伺服系统应用的日益广泛。介绍了液晶生产中的关键设备玻璃裂片机，并详细分析松下MINAS A系列交流伺服系统在玻璃裂片机中的应用。     

Controlled elements for designing ciphers suitable to efficient VLSI implementation

This work considers the problem of increasing the performance of the ciphers based on Data-Dependent (DD) operations (DDO) for VLSI implementations. New minimum size primitives are proposed to design DDOs. Using advanced DDOs instead of DD permutations (DDP) in the DDP-based iterative ciphers Cobra-H64 and Cobra-H128 the number of rounds has been significantly reduced yielding enhancement of the “performance per cost” value and retaining security at the level of indistinguishability from a random transformation. To obtain further enhancement of this parameter a new crypto-scheme based on the advanced DDOs is proposed. The FPGA implementation of the proposed crypto-scheme achieves higher throughput value and minimizes the allocated resources than the conventional designs. Design of the DDO boxes of different orders is considered and their ASIC implementation is estimated.     

A formal model of asynchronous communication and its use in mechanically verifying a biphase mark protocol

We present a formal model of asynchronous communication between two digital hardware devices. The model takes the form of a function in the Boyer-Moore logic. The function transforms the signal stream generated by one processor into that consumed by an independently clocked processor, given the phases and rates of the two clocks and the communications delay. The model can be used quantitatively to derive concrete performance bounds on communications at ISO protocol level 1 (physical level). We use the model to show that an 18-bit/cell biphase mark protocol reliably sends messages of arbitrary length between two processors provided the ratio of the clock rates is within 5% of unity.     

软硬件协同设计语言System C在SoC设计中的应用

软硬件协同设计是未来VLSI设计的发展趋势.作为新的系统级VLSI设计标准,System C是一种通过类对象扩展的基于C/C++建模平台,支持系统级软硬件协同设计、仿真和验证.文章讨论了SystemC复杂芯片设计中的设计流程、设计优势,并给出具体设计实例.     

32位单片机80960KB中断系统硬件资源分析

本文主要介绍３２位单片机８０９６０ＫＢ中断系统的硬件结构及其运行机理。     

程控交换机的可靠性对策

为达到程控电话交换机系统技术性能的稳定可靠，本文着重论述了该种设备应采取的各种可靠性对策。     

基于8098单片机的伏安特性测量系统的设计

伏安特性测量技术有着广泛用途。本文介绍一种用８０９８单片机为控制核心的智能化通用伏安特性测量系统的设计要点。包括系统的硬件和软件设计，以及针对实际问题所采用的一些设计技巧。成果分析表明，采用８０９８单片机有着独特的优越性和推广价值。     

基于Profibus-DP的西门子S7—300 PLC与ABB 800XA数据通信的实现

本文介绍基于Profibus—DP通信协议的西门子S7—300PLC与ABB 800XA系统之间的数据通信。详细描述了分别通过S7—300 PLC CPU的DP接口和CP342—5通信模块与ABB 800XA系统通信两种不同条件下的有关通信配置及实现数据通信的过程。     

对大学计算机基础中硬件部分教学方法的探讨

大学计算机基础是大中专院校的非计算机专业学生必修的一门公共基础课。这门课程主要讲述计算机的基础知识,基本操作;学生对其中计算机的硬件知识很感兴趣,但由于教学条件的限制,难以在课堂上用实物进行讲解和组装演练,因此我们要广开思路寻找适合当前教学境况的创新教学方法。     

线阵电荷耦合器技术在自动测长系统中的应用

介绍用线阵电荷耦合器件(CCD)技术设计的型材在线实时测量系统。采用粗测和精测相结合的方法，解决了较大长度范围内精确测量问题。详细介绍动态在线非接触式测控系统的基本工作原理及软硬件组成。实测结果表明其测量精度高、效果好，能满足快速流水线的现场检测。