基于软硬件协同设计的数控系统的研制

文章采用基于软硬件协同设计的方法研制开放式数控系统。在建立系统三层结构数学模型基础上,通过分析系统约束条件和优化目标,划分了系统软硬件功能,并建立了硬件抽象层,最后对系统软硬件功能进行了详细设计。目前,该系统在广州机床厂数控铣床上进行加工实验,加工半球的圆度误差小于12μm,实验结果满足工厂对数控系统的精度要求。     

简谈PLC硬件电路设计

以日本三菱FX系列、欧姆龙C系列P型PLC为例，简要分析PLC与外部电路有联系的三部分情况，提出此方面的硬件电路设计。     

PLC控制简单显示电路的设计与应用

介绍一种在PLC控制系统中简单数字显示电路的设计方法,成功应用于交通灯模拟现场的PLC控制系统中进行时问显示。     

浓度调节系统

介绍NBT-1型浓度调节器的结构、原理，该调节器与浓度变送器配套，可以控制纸浆的浓度。     

基于现场总线的卷烟生产多层网络控制系统设计

文中提出将卷烟生产控制系统分解为单元自控层子网络、机组控制层子网络、现场监视管理层子网络和综合管理扩展层子网络的多层网络控制系统的设计思想;讨论了基于西门子S7系列PLC的4层网络控制系统的基本结构和设计方法,阐述了基于Prfibus和Ethernet的4级网络控制系统的硬件组态及通讯技术。     

Animating Architecture: Coupling High-Definition Sensing with High-Definition Actuation

Ruairi Glynn , lecturer on interactive architecture at the Bartlett School ofArchitecture, University College London (UCL), puts the pressing question: ‘What does a world of hyper-connective, high-definition sensing offer architectural design?’ Despite the pervasiveness of ubiquitous computing – the Internet of Things (IoT) – and students' ability to speculate, build and test responsive lifesize installations, could practice itself be in danger of getting left behind?     

谈中介机构如何做好建筑工程跟踪审计

就中介机构对跟踪审计的流程和整个过程的作业重点进行了分析,从工程前期、施工过程、竣工结算等几个方面进行了论述,并提出了相关的硬件配置和质量控制方法,以实现建筑工程跟踪审计规范化。     

基于MC9S12DG256的发动机电控系统硬件设计

介绍了一种基于Freescale公司16位高性能控制芯片MC9S12DG256的汽油机电控系统硬件设计方案,主要包括传感器及处理电路、微控制器和执行器及处理电路三大部分,以促进发动机电控系统的研究。     

Personal-computer-based system for electron beam X-ray microanalysis of biological samples

A system based on a personal computer has been developed which provides a relatively inexpensive way to equip an electron microscopy laboratory for quantitative elemental analyses of cryosectioned biological samples. This system demonstrates the feasibility of making an X-ray analyser from a personal computer, together with commercially available hardware and software components. Hardware and software have been assembled to drive the beam in a scanning electron microscope, collect and analyse X-ray spectra, and save, retrieve, and analyse data. Our software provides a menu-controlled user interface to direct spectra acquisition and analysis. Spot analyses, video images, and quantitative elemental images may be obtained and results transferred in ASCII format to other computers. Wet weight, as well as dry weight, concentrations are calculated, if measurements were made of areas of the hydrated sample before it was freeze-dried. Grey-level copies of video and quantitative elemental images may be made on a laser printer.     

某型飞行参数记录系统自动测试系统设计

文章首先介绍了飞行参数记录系统的重要性和一般结构,然后采用虚拟仪器技术针对某型飞行参数记录系统进行了自动测试系统设计,详细说明了系统的硬件、软件设计和检测方法。该系统通过使用验证,证明了其良好的测试性能。