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The major parameters and the digital signal controller based control system are proposed.

本文给出了充电机主电路的主要参数,以及基于数字信号控制器的数字控制系统的设计过程。

Combined with the latest development of modern technology of power electronics and digital signal processing, the power supply reseached in the thesis is based on DSP processor and IGBT-a high speed and large power convector. Its work frequency increases to 20kHz and its control is in full digital method.

本文结合现代电力电子技术以及数字信号处理技术的最新发展,采用数字信号处理器作为控制核心,高速大功率开关器件IGBT作为逆变器功率器件,将该除尘电源的工作频率提高到20kHz,并实现了对该电源的全数字化控制。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上,采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块;采用高速A/D转换器LTC1405作为回波信号检测模块;采用复杂可编程逻辑器件CPLD作为核心控制模块,构成数字自动增益控制电路,并设计粗调和细调步进控制相结合的算法,对回波信号的增益进行精确而快速的调节控制,使回波信号振幅快速稳定在设计指标范围内,利于接收机后续信号处理电路对回波信号作进一步的处理。

The collimator neutron flux is drawn from the horizontal channel by the use of SPRR-300 as a neutron resource. The convector made of 6LiFZnS and the long focus professional twilight lens with the small field of view are used, and the digitalized CCD camera is developed by the use of scientific grade CCD chip, the double thermocouple refrigeration and 14bit A/D convector. The image grabbing, processing and analyzing software of double bytes has been developed by the use of Visual C++ and C++ Builder, and the facility of anti-radiation for CCD is set up.

采用6LiFZnS材料中子转换屏、长焦距、小视场专用微光镜头等光学组件,利用科学级CCD芯片、两级热电偶制冷技术、14bit模数转换技术研制了数字CCD摄像机,采用Visula C++和C++ Builder为工具,开发了双字节图像采集处理分析软件包,并设计了成像系统辐射防护装置,构成了热中子数字成像系统。

With the development of digital technology, the traditional is increasingly converting into the digital one.

随着数字技术的发展,传统图书馆逐步在向数字图书馆的方向发展。

Digital holography ; Microscopic digital holography ; Wave front reconstruction ; Fresnel approximation ; Convolution method ; Angular spectrum theorem

数字全息;显微数字全息;波前重建;菲涅耳近似;卷积法;角谱方法

From the view-point of international law, the paper specializes international conventions and 《The Digital Millennium Copyright Act》 of the United States, which has great influence on the field of copyright protection in

通过介绍不同国家对信息网络传播权的认定和保护,结合数字图书馆本身的特点,说明了设立这一新的权利的必要性,同时提出这一新的权利对数字图书馆资源建

Galore media for the majority of enterprises to provide professional network video services, including corporate video , video conferencing , video advertising, business video , web video , and communications as digital services, as the number of Taiwan's k18 through the use of network platforms and streaming media ...

嘉豪传媒为广大企业提供专业的网络视频服务,包括企业视频、视频会议、视频广告、商业视频、网站视频、以及通视数字服务,旗下k18通视数字台是利用网络平台和流媒体。。。

This text to 1 kind from calculator automatically control and carry on the electronics dollar that the data collect a spare part a total quantity Fu to shine on the spot test system to carry on pulling a description, and pass application that system to the CMOS numerical electric circuit CC4069 carry on with total the amount of synchronous electricity parameter's on-line diagraph, and radiate a quickly collect of the countermarch fire data, study pull CMOS numerical electric circuit a total quantity Fu shine on on-line Fu to shine on to respond to characteristic and Fu to shine on behind fast time back a fire effect.

本文对一种由计算机自动控制并进行数据采集的电子元器件总剂量辐照现场测试系统进行拉描述,并通过应用该系统对CMOS数字电路CC4069进行与总剂量同步的电参数在线测量,以及辐射后退火数据的快速采集,研究拉CMOS数字电路总剂量辐照在线辐照响应特性和辐照后快速时间退火效应。

Acting Israeli national telecommunications company ECI optical fiber communications equipment, France SAGEM, digital microwave equipment, digital cross-connect equipment, and other related ancillary products.

代理以色列国家电信公司ECI光纤通信设备、法国SAGEM、数字微波设备、数字交叉连接设备等相关配套产品。

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推荐网络例句

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里,举止就文雅一些,因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计,这件高贵的制服是香港本土制造,是我们第一套不配帽子的制服。

Do not 'inflate' your achievements and/or qualifications or skills .

不要 '夸大' 你的业绩或成果,条件或者技能。