查询词典 digital control

The facets of customer verification, access control, authority management, log audit, data encryption, digital signature are researched and implemented to some extent.

具体对身份认证、访问控制、权限管理、日志审计、数据加密、数字签名等方面进行了研究和一定程度的实现。

Digital technology in the rapid development of network technology today, access control technology has been rapid development.

在数字技术网络技术飞速发展的今天门禁技术得到了迅猛的发展。

a kind of design project of multifunction electric power quality gauged instrument based on virtual instrument is put forward in this article.this system integrates virtual instrument programming and power electronics together,to realize diverse signals of current electric power quality field allin one.the integrated signal generator unit which carries out the collection of high speed digital data,d/ a conversion and analog output in four channels,unsymmetrical synchro control fifo etc.by fpga are introduced,the flow of electric power system various signal which generates by vc programming is elaborated,and the structural design of signal amplification unit is analysed.the experiment text result shows that this gauged instrument has attained current advanced high grade of accuracy and it will accelerate the steps of electric power quality calibration because of its accuracy and versatility.

摘 要：提出一种基于虚拟仪器技术的多功能电能质量标定仪的设计方案，采用虚拟仪器编程技术和电力电子技术相结合实现集目前电能质量领域的多样信号于一体。介绍采用fpga实现高速数字量采集、d/a转换及4通道模拟量输出、非对称同步控制fifo等的集成信号发生单元，阐述利用vc编程实现的电力系统多样信号的产生流程，分析信号放大单元的结构设计。实验测试结果表明该标定仪达到目前先进的高精度等级，由于其准确性和多功能性将加快电能质量标定的步伐。

Improved digital time-segmented PID control separated by integral action coefficient was adopted in antiaircraft missile.

某型防空导弹采用改进的数字分时段积分分离PID控制。

DALI (digital addressable lighting interface) is a new international standard for lighting control systems.

数字可寻址照明接口协议是目前照明控制领域出现的新一代照明控制协议。

Base on the systematically geological investigation and study, we choose to use aremote sensing data source,the geography control data source(1:50,000relief map of Qiaojia and measured GPS ) as the data source of this research, adopt"Digital Landslide"processing image data, and carry on time-space analysiscombining geological investigation and related data. Application aerodynamicist theories, some important conclusions that obtained from the wind-tunnel experiment,and according to the time –space analysis result, we analyzed the landslide dammingmovement mechanism, presumed the movement format of this high-speed landslide,studied the formation mechanism and the movement characteristic of this landslide ,calculated it's movement equation, applied VC language to write calculationprocedure of each stage of the landslide, computed movement speed and displacement,and made sure its possible stop district.

本文在前人研究的基础上，选用遥感数据源、地理控制数据源(1：5万巧家幅地形图及实测GPS点)为本研究的数据源，采用"数字滑坡"技术处理图像数据，结合野外实地考察及相关资料对石膏地滑坡进行了时空分析；运用空气动力学理论，采用胡厚田等人在风洞实验中得出的许多重要结论，根据时空分析结果分析滑坡的运动机理，推测高速滑坡的运动模式；研究石膏地滑坡的形成机理、运动特征及运动方程，并用C++语言在VC开发环境中编写滑坡各阶段的计算程序，计算滑坡的流动速度及运动位移，确定其可能的停止区域。

The networked control system of this class is composed of an affine nonlinear plant and a linear digital controller.

这种分布式的结构减少了连线，降低了成本，广泛应用于汽车工业、机器人遥操作和自动化生产系统中。

American Standard Code for Information Interchange. It's the most popular coding method used by small computers for converting letters, numbers, punctuation and control codes into digital form.

美国信息交换标准码，小型计算机最常用的编码方法，用于将字母、数字、标点符号以及控制码转换成数字形式。

The development of MSCIS mainly includes the following two parts: the cards and the software running on the communication computer. There are five types of cards, communication card, control card, analog output card, analog input card and digital input/output card.

MSCIS接口系统的研制工作主要包括两大部分：系统硬件板卡（包括通信卡、控制卡、模拟量输入卡、模拟量输出卡和数字量输入输出卡）的研制和通信计算机软件研制。

The design of the interface modules of the control system is the following work. They were the interfaces connecting controller with digital, analog network, and the monitor computer respectively.

紧接着展开了对控制系统通信部分的研究开发工作，结合相关的芯片技术，设计了系统的数字通信模块、模拟通信模块、监控计算机通信模块；在现场模拟量的输入／输出模块，利用两片8255扩展了48个I／O端口，实现对现场设备的远程控制。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。