查询词典 hardware process control block

Experiments on real hyper-spectral image sequences show that our method is not only effective both in efficiency and accuracy, but also more suitable for the hardware realization compared with MAD block matching algorithm and normalized correlation coefficient block matching algorithm.

与基于MAD块匹配算法和归一化相关系数块匹配算法进行比较，该算法实现了图像序列高精度匹配，而且硬件实现简单，计算复杂度较低。

Block cipher is an important branch of cryptology, it has many attractive features such as high rates, easy for standardization, and efficient for both software and hardware implementations. Block ciphers are usually core components in information and Internet security for data encryption, data signature, authentication and key management.

分组密码是密码学的一个重要分支，它具有速度快、易于标准化和便于软硬件实现等特点，通常是信息与网络安全中实现数据加密、数字签名、认证及密钥管理的核心体制。

The paper investigates both block-type pilot linear minimum mean square error algorithm and IEEE802.16 OFDM channel estimation analysis. Simulation results confirm the block-type pilot structure is more suitable for IEEE802.16 system. An optimal pilot setting algorithm, based on space frequency domain, is explored and the pilot chart is presented. The proposed algorithm finds its application in MIMO-OFDM. Simulation results show the algorithm presents a good approximation to the perfect channel state information curve, with about 2dB difference in SNR. The simulation results also demonstrate the algorithm achieves fairly high stability in the environment of fast fading, performance of the proposed algorithm is better that of pilot training channel estimation.3. Taking into account the characteristics of IEEE802.16 OFDM system, OFDM system simulation platform is constructed in Matlab, exploiting simulink as a tool. OFDM modulation and demodulation simulation system are configured on LabVIEW platform. All the system signal processing is simulated, including defining system parameters, designing modulation model, and verifying all the proposed algorithms under different environments, such as white Gaussian noise, multi-path fading, with or without guard interval etc. Bit error performance is evaluated. The research provides valid theoretical basis for practical OFDM system performance evaluation.4. Taking advantage of software radio, the paper designs a hardware platform with both 256-IFFT/FFT and 512-IFFT/FFT OFDM schemes co-existing in one platform. You can predetermine one from the two schemes to carry out almost the same model function with different system performance and parameter setting.5. Referring to IEEE802.16 standard, the paper proposes a design method for generating signals and frames suitable for laboratory investigations implemented in laboratory environment.6. Based on 6701evm digital evaluation card, combined with analogy front-end, the paper designs a DSP software model to deal with baseband signal processing. An overall OFDM scheme, with modulation and demodulation function, is accomplished.

讨论分析了MIMO-OFDM中一种基于空频域的最优导频设置算法，给出了导频图案，通过仿真实验表明，该算法与理想的信道状态信息曲线非常接近，信噪比差距约在2dB左右，并且在快衰落条件下具有较好的稳定性，其性能要优于基于前导训练的信道估计方法。3、根据IEEE802.16OFDM系统特点，论文分别在Matlab中应用Simulink工具构建OFDM系统仿真平台、在LabVIEW平台上实现了OFDM调制解调仿真系统，模拟了整个系统的信号流程，进行了OFDM仿真系统参数的选择和调制模块的仿真设计、论证各算法性能，并根据各种不同的条件：例如高斯噪声、多径衰落、有无保护间隔等，对系统的误码特性进行了评估，为正确评价实际OFDM系统的性能提供了有效的理论依据。4、论文以软件无线电思想作为指导，提出了以256点IFFT／FFT为核心和以512点IFFT／FFT为核心的两种OFDM算法模式并存于同一个硬件平台、且可预选的方案，它们在参数选取和性能指标上有所差异，均实现了相似的模块和功能。5、论文参考IEEE 802.16无线网络标准的参数设置，针对本设计系统的应用环境和系统硬件的性能速率，提出了一种应用于实验室环境的信号结构、帧格式等参数设计。6、论文基于TI公司的6701evm数字评估板卡，结合模拟前端搭建数字中频平台，设计了基带处理的DSP软件模块并进行系统调试，基本实现了一套完整的OFDM调制解调方案。

Variety oil painting mostly large, table plaque, oil painting and so on, and a wooden table plaque blocks for firewood or hardware oil painting reproductions , some patterns in the wood pedestal oil painting reproductions , while the original wooden canvas Glass Block is very rare, so with Block table plaque frame than with the oil painting reproductions value is much higher.

品种大多为大件围屏、插屏、挂屏等，而插屏的木座多为柴木或硬杂木，有的在木座上透雕花纹，而原配玻璃油画的木座是很少见的，所以带座的插屏比带木框的挂屏价值要高很多。

The paper firstly introduces the background, the present situation and meaning of the research on the embedded system. The research of key technologies of embedded ethernet remote measure and control system is carried out in this paper. Then the author detailedly illustrates the design process of hardware and software of the embedded remote measure and control system. The design process includes the selection and configuration of the 32-bit microprocessor, the selection of the memorizer, the selection and software design of the Ethernet Controller, the realization of AD data acquisition model and DA converter model.

本文论述了嵌入式系统的研究背景、研究现状及研究意义，对基于嵌入式技术的以太网远程测控系统关键技术进行了研究，详细介绍了系统的软硬件设计过程，包括32位微处理器的选择与配置、存储器的选择、网络控制器的选择及软件设计、AD采样模块与DA数模转换模块等外围电路的实现。

The general industry control computer and basic IC block are applied in the hardware of the control system.

近年来，国产组态软件得到大力发展，从而使开发小型的性价比较好的系统成为可能。

The design method of loading control system of derrick car based on ADμC824BS was introduced in this paper, the hardware principle block diagram and software flowchart of the control system were presen- ted.

介绍了以ADμC82 4BS微控制器为核心的起重车载荷控制系统的设计方法，给出了系统硬件原理图和软件流程图。

The design adopts the CENTUM CS1000 Distributed Control System, which was produced by Michael Tien company in Japan Yokogawa. The Distributed Control System has reliable hardware, reliable operating, feature-rich software and good operating characteristics. In the process of energy conservation, control and optimize the consumption will play a positive role.

PX装置异构化单元脱庚烷塔自动控制系统采用了日本横河-北辰公司生产的CENTUM CS1000集散控制系统，集散控制系统，其硬件可靠，运行可靠，软件功能丰富，具有良好的操作特性，并在工艺过程的节能、将耗和优化控制方面起着积极的作用。

Taken the three dimensional shining metal combination machine tool as an object of study in the paper,the main structure and motion form have been discussed and the work process and control requirement of machine tool have been analyzed,the movement cycle diagram of machine tool and the motion table of hydraulic pressure component have been given.Then the control system design based on PLC has been proposed,the I/O address table has been listed and the hardware and software of the control system has been de...

文章以三面铣组合机床为研究对象，通过对主要结构和运动形式的探究以及对机床的工作过程和控制要求分析，给出了机床动作循环图、液压元件动作表；并采用PLC控制系统的设计方法，列出了I/O地址分配表，进行了软硬件设计，绘制了 PLC的外部接线图和单循环自动工作流程图及其说明；实验运行结果表明，将PLC技术应用于三面铣组合机床具有整体技术及经济效益。

Aiming at realizing the automation of slabs signing, using PC, motion control card and position servo, the control system for scriber unit in hot spray marking was designed. The hardware constitution, realizing principle and control process were introduced.

为实现热板坯标识过程的自动化，采用"PC+运动控制板卡+位置伺服系统"设计了热板坯喷印机二维写字机构的控制系统，介绍了系统的硬件结构、实现原理及控制流程。

He tendered his resignation to the Prime Minister.

他向首相递了辞呈。不适合

International economy and trade,Nanking 210044

国际经济与贸易，南京 210044