阵列处理器系统芯片的发展

本文从数据流动的计算模式、并行计算的阵列芯片、应用演变的数学技术、以及硅基芯片的制造技术等4个方面，研究了阵列处理器系统芯片的发展，提出了一种统一体系结构的阵列处理器系统芯片，简称APU系统芯片。     

Montarbo PalcoPlus线阵列音箱

Montarbo PalcoPlus线阵列音箱是一个小型的两路驱动的二分频系统,可提供70 Hz-20 kHz的频率范围,具备平滑的频率和相位响应。一个35 mm的钕磁     

Ultrasonic guided wave inspection with array sensors

Ultrasonic guided wave becomes one of promising tool for monitoring various types of structures such as large steel plates, vessels, and pipes in oil, chemical or nuclear industry, because guided waves have ability to travel wide range of the target structure in a single position. However, analysis of guided wave signals acquired from structure is difficult on account of low S/N ratio and its dispersive nature. To improve S/N ratio and overcome dispersion effect, focusing techniques for guided waves are needed. Thus, in this study, focusing techniques for guided waves were developed in order to improve long range inspection ability, and performance of the developed techniques was verified by experiments.     

基于A/D转换的键盘阵列分析与设计

本文主要介绍了基于模拟-数字转换的键盘阵列设计方法.以常用4×4键盘为例,根据其阵列结构,设计出兼容的且适用于AD转换的阵列键盘.采用场效应管构成恒流源,为键盘供电,使得键盘输出电压受电源波动影响小,并且可由AD转换器直接采样.经过仿真与实际测试分析,推导出适用于不同AD精度的键盘阵列的通用计算公式.     

浅谈中小型非编网的规划与建设

近年来非线性编辑网络系统在国内县级电视台开始应用，随之而来的是网络的规划问题。本文从网络的建设过程中遇到的问题出发，总结了组建非编网需要注意的各个环节，并做简要介绍。     

协同通信——提升无线通信系统性能的倍增器

协同通信允许无线节点之间合作传输信息,可获得多输入多输出(MIMO)与多跳传输增益,显著改善无线通信系统的性能。文章阐述协同通信的历史背景、基本概念、操作方式和工作原理,并对有待解决的关键技术问题进行分析。着重说明协同通信与认知无线电技术的结合,探讨协同通信技术可能的应用。     

聚合物费米型截面阵列波导光栅的优化设计

利用微扰理论给出"等效矩形波导法",分析了费米型截面硅基聚合物阵列波导光栅的传输特性.模拟表明,波导的费米型截面将使阵列波导光栅的传输光谱产生漂移、并使串扰增大.为了消除光谱漂移、减小串扰、实现正常的解复用功能,对阵列波导光栅的结构参量进行了重新优化.结果表明,重新设计的费米型截面聚合物阵列波导光栅的光谱响应和串扰恢复到初始设计的聚合物矩形截面阵列波导光栅的水平.     

蒸气化学分析用传感器阵列

已经报道了一些传感器阵列,在这些阵列中,加热催化丝与随后的低温测量电流气体敏感器组合以检测电化学活性和惰性化合物及增强识别不同化合物的能力,此工作有五个目的:(i)通过催化丝温度的快速调制,从传感器阵列得到更多的信息内容;(ii)通过传感     

Construction of Generalized Synchronization for a Kind of Array Differential Equations and Applications

Chaos synchronization, as a special complex phenomenon, has been studied for about a decade. Only recently, have generalized chaotic synchronization phenomena been realized to be general in the real world and to have potential applications. We present two theorems for constructing a kind of array differential equations with generalized synchronization (GS) with respect to linear transformations. Two array differential equation systems with GS are introduced based on our theorems. Numerical simulations show that the two systems display periodic GS and chaotic GS, respectively.