基于量子细胞自动机的设计方法

简要介绍了量子细胞自动机这一新型纳电子器件,重点综述了量子细胞自动机系统的自顶向下和自底向上的两种设计方法,并比较了各自的优缺点,提出一种综合两种设计方法的设计思想。     

GPS探空仪通信系统的设计与实现

针对GPS探空仪的通信需求,设计了一种系统方案。描述了各个组成部分具体设计,提出了一种基于无线收发芯片CC1020的发射、接收模块的软、硬件设计,此设计具有高可靠性、高性价比等特点。     

八位竞赛抢答器电子系统电路分析与设计

设计一种实用的八位的竞赛抢答器,为学习电子的人提供一种电路的分析和设计方法,采用了电路系统的分析方法对实用电子技术电路进行分析和设计,最终得出一种创新的应用型电路.     

大功率机载PD雷达发射机设计

简述了影响微波管放大器频谱的主要因素 ,阐明了设计机载电子设备的制约因素 ,以及在工程应用中的一般设计思想 ,强调了大功率PD雷达发射机的设计重点。针对一种具体的设计指标 ,详细介绍了一种大功率高纯频谱发射机的设计方法     

一种多通道ADC采样板设计

樀要:该文描述了一种常用的多通道ADC板设计,探讨了作为多通道ADC板设计时难点之一的同步采集技术,为多通道ADC板的设计提供了一种简单有效的方法。     

多路输出单端反激电源的设计

设计了一种基于UC2844的多路输出单端反激电源,给出了该电源的具体设计步骤和详细的设计参数及高频变压器的设计方法。实验结果表明了此方法设计的开关电源可以解决工程中的实际需要,是一种性能良好的开关电源。     

匹配电路设计软件的实现与验证

利用史密斯圆图图解法求解匹配电路工作量大且不精确.为了简化匹配设计过程,设计了一种基于Matlab语言的求解匹配电路的软件,实现了各种参数和频率下常规匹配电路结构的自动求解计算,并通过实例进行了仿真验证,从而为求解匹配电路提供了一种新的求解方法,能快速准确地实现设计目的,并为设计更优的求解匹配电路软件提供了一种思路.     

多路末级大幅度输出电路设计

阐述了一种多路末级大幅度输出放大电路的设计,提供了一种工程化的多路末级大幅度输出放大电路的设计方法。     

基于Multisim 8的数字钟的设计与仿真

应用Multisim 8进行数字钟设计与仿真。可以有效的简化设计过程,不失为一种很好的设计方法,Multisim 8作为一种高效的设计平台。其强大的虚拟仪器库和软件仿真功能,为电路设计提供了先进的设计理念和方法。     

精确重建滤波器组的快速设计方法

介绍了一种线性相位精确重建余弦调制滤波器组的设计方法,并总结了实验结果,提出了一种设计高通道数滤波器组的快速算法。     

Concurrent design of machined products: a multivariate decisionapproach

In the traditional process of product design, a sequential approach treats each of the design steps individually without considering requirements of manufacturing, assembly and other downstream activities in the product life cycle. The lack of systematic and simultaneous consideration on the impact of design decisions on manufacturing and assembly leads to repeated and excessive changes in design and processes. To resolve this problem, the concurrent engineering approach to product design foresees and avoids potential design flaws by incorporating design requirements from downstream activities of the product development life cycle early in the design stage. This research develops a methodological framework for product life cycle design in concurrent engineering. Through a cohesive organization of semantics of high-level design features and relationships, this representation provides a means to evaluate the impact of design on subsequent activities in the product life cycle, including design for manufacture (DFM), design for assembly (DFA), and design for productivity (DFP). In the first stage of a two-level design, selection of design candidates is made based on multiple design criteria using utility theory taking into account imprecision of design information and user preference. The second stage of design further fine-tunes attribute values of the selected design by a genetic algorithm based parametric optimization procedure. An illustrative example of two alternative designs of a milling fixture demonstrates the effectiveness of the framework and its implementation methodology     

Rapid design space exploration using legacy design data and technology scaling trend

Rapid and effective design space exploration at all stages of a design process enables faster design convergence and shorter time-to-market. This is particularly important during the early stage of a design where design decisions can have a significant impact on design convergence. This paper describes a methodology for design space exploration using design target prediction models. These models are driven by legacy design data, technology scaling trends and, an in situ model-fitting process. Experiments on ISCAS benchmark circuits validate the feasibility of the proposed approach and yielded power centric designs that improved power by 7-32% for a corresponding 0-9% performance impact; or performance centric designs with improved performance of 10.31-17% for a corresponding 2-3.85% power penalty. Evolutionary algorithm based Pareto analysis on an industrial 65 nm design uncovered design tradeoffs which are not obvious to designers and optimize both power and performance. The high performance design option of the industrial design improved the straight-ported design's performance by 29% with a 2.5% power penalty, whereas the low power design option reduced the straight-ported design's power consumption by 40% for a 9% performance penalty.     

某城市综合体电气设计综合布线系统设计

某大型城市综合体项目的电气设计是整个项目设计的一部分。电气设计包括强电设计和弱电设计,综合布线系统是建筑智能化系统(弱电系统)的重要组成部分。针对此项目的特点,分析了项目综合布线系统整体设计思想,然后介绍了各子系统的设计要求和设计内容,最后通过部分综合布线系统图,进一步阐述了各个子系统之间的关联方式和配置。     

流水线式通信勘察设计平台研究

本文通过对通信设计院传统勘察设计模式和生产工具的分析,以实现勘察设计整个过程的信息化和集中化为主线,提出并搭建了流水线式勘察设计平台,能够帮助通信行业设计院完成勘察设计的标准化、集中化和信息化,从而提高设计院生产效率和设计质量.     

基于SolidWorks管路在反应装置中的应用与实例

在反应装置装配体的机械设计中,存在着大量的管路零部件,对其各个零部件使用传统的三维设计方法,如拉伸、扫描等来绘制管路,不仅使工作强度增大,而且在装配过程中经常会出现干涉现象,同时存在设计效率低、设计周期过长等问题。本文采用solidworks routing为设计平台针对装配体中的管路进行三维设计,简短了设计开发时间,提高了设计的高效性和准确性,同时建立自定义零部件库文件,为今后设计使用提供了方便的辅助,并给出了反应装置部分设计实例。     

无轨导航机器人系统架构设计

本文重在介绍无轨导航机器人系统架构设计方法,呈现如何从整体需求分解到不同技术领域具体实现的一种设计思路。在系统设计上分为结构、硬件、软件三个部分,分别对每一部分进行详细介绍。本文以轮式无轨巡检机器人为例,从其需求分析、整体实现思路到整机结构、硬件及软件方案等方面进行了详细设计。文章主要目的是为相关领域的机器人设计人员提供一种机器人整机系统的通用设计思路及方法。     

数字合成扫频仪USB2.0接口设计

在对数字合成扫频仪的硬件设计进行概述的基础上,描述了一种基于ISP1362的USB2.0接口设计方案,包括USB接口的硬件结构设计,USB固件程序、驱动程序以及应用程序的设计方法。实验表明,整个设计满足设计要求,传输速率可达33 Mbit·s^-1。     

基于Protel DXP的印刷电路板设计

论述利用Protel DXP软件设计印刷电路板的技术,其中包括电路原理图设计、印刷电路板PCB的生成以及CAM文件输出。指出了Protel DXP作为Protel软件最新版本所具有的一些优点。分析了在原理图设计和印刷电路板设计过程中会出现的问题,根据实际电路设计给出了如何避免和解决这些问题的方法,为正确高效率设计印刷电路板提供了有效的途径。     

Hardware/software co-design of the Stanford FLASH multiprocessor

Hardware/software co-design is a methodology for solving design problems in systems with processors or embedded controllers where the design requirements mandate a functionality and performance level for the system, independent of the hardware and software boundary. In addition to the challenges of functional correctness and total system performance, design time is often a critical factor. To design MAGIC, the programmable memory and communication controller for the Stanford FLASH multiprocessor, the authors employed a hardware/software co-design methodology. This methodology allowed them to concurrently design the hardware and software thereby reducing design time while simultaneously ensuring that the design would meet ambitious performance goals. Serializing the hardware and software design would have lengthened the design time and significantly increased the amount of redesign when the tradeoffs between the hardware and software implementations became clear late in the design process. The co-design approach led them to build a series of hierarchical simulators that allowed them to begin design verification early and to reduce the level of effort required to ensure a functional design     

嵌入式系统PCB的可信性设计

嵌入式系统具有独特的电路结构和电气特性,在产品设计阶段进行合理的可信性设计是保证产品质量,降低成本的基本手段。可信性设计的内容包括可测试性设计、可维修性设计、可靠性设计。产品设计过程中这三部分是相互交叉,相互影响的。