查询词典 hardware structure

Powder metallurgy products / PIM metal powder injection molding / precision casting / structural parts: Stainless steel powder metallurgy structural parts, powder metallurgy iron-based, powder metallurgy copper, stainless steel casting, metal powder injection molding MIM structural components, precision steel casting; cam , metal buttons, spherical oil bearings, bushings, bushing; copier parts, printer parts, automotive, electronics, office equipment, medical equipment, environmental protection and filtration equipment and other machinery, electrical appliances, electric / pneumatic products in the precision parts; products used within the industry shaped metal structure parts, non-standard parts, hardware accessories.

粉末冶金制品/PIM金属粉末注射成型/精密铸件/结构零件：不锈钢粉末冶金结构件、粉末冶金铁基、粉末冶金铜基、不锈钢压铸件、金属粉末射出成形MIM结构零件、精密铸钢件；凸轮、金属按键、球形含油轴承、轴套、衬套；复印机配件、打印机零件、汽车、电机、办公器械、医疗器械、环保过滤设备及其他各种机械、电器、电/气动产品内的精密零件；各行业产品内部用的异形金属结构零部件、非标准件、五金配件。

Powder metallurgy products / PIM metal powder injection molding / precision casting / structural parts: Stainless steel powder metallurgy structural parts, powder metallurgy iron-based, powder metallurgy copper, stainless steel casting, metal powder injection molding MIM structural components, precision steel casting; cam , metal buttons, spherical oil bearings, bushings, bushing; copier parts, printer parts, automotive, electronics, office equipment, medical equipment, environmental protection and filtration equipment and other machinery, electrical appliances, electric / pneumatic products in the precision parts; products used within the industry shaped metal structure parts, non-standard parts, hardware accessories.

手机IT零件：手机粉钢配件、手机不锈钢按键、手机电池仓卡扣、手机左右固定螺母、手机上下拉边装饰条、手机不锈钢焊接件、手机电池盖不锈钢装饰条、手机MIM注射配件、手机转轴凹凸轮、笔记本电脑转轴凹凸轮、数码相机转轴凹凸轮、数码产品不锈钢配件。

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。

The practive effect shows : this kind of hardware implementation method , not only has a simple structure, but alse improved the speed of algorithm greatly . It set a basis for the applic...

实际效果显示，这种硬件实现方法，不仅结构简单，而且大大提高了算法的运算速度，为算法在实时、高速场合的应用打下基础。

At first, the overall structure and working principle of this card are presented; then the design and implementation of hardware and software for this card are described in detail.

首先给出了采集卡的总体结构及工作原理，然后详细介绍了采集卡硬件和软件的设计和实现思路。

In the project of mechanical structure,we bat around the error and metrical way of Crank Shaft,describe the elements of the Synthetically Measure Instrument Of Crank Shaft and the way to realize it. In the project of hardware"s control,we analyze the displacement sensor,the data acquisition card,stepping-motor and it"s controller.

在硬件的控制部分，我们主要对所用的位移传感器和数据采集卡、以及步进电机及其驱动器进行了分析，并提出了硬件控制部分的设计方案，进行了硬件控制部分的接线、调试工作。

In this paper, we design a millimeter wave distance measuring system based on AVR micro controller and provide the structure of the hardware and the software.

摘要基于AVR高速嵌入式单片机设计了一种毫米波测距系统，给出了相应的硬件组成结构和软件设计方案。

These two structures can decrease the adding new failure probability to neglectful level while hold the advantages of easy of implementation and lower system cost.(3) With the analysis of several kinds of high volume hardware hash table, a DRAM based multi-level hash table structure is proposed.

3分析了几种大容量硬件哈希表实现结构，提出了一种基于DRAM的多级硬件哈希表结构，并对其静态查表性能和动态查表性能进行了深入研究，具有一定的理论和实用价值。

In this paper RoboCup Mid-size Robot are the object of study from the two sides of the robot system and the system of multi-robot cooperation, the main research results are as follows: First, this paper reasearches the problom of the hardware and software architecture of Mid-size robots. According to the real-time requirements of the competition, the paper designs the mechanism of omni-direction wheels, which achieves a great improvement on the traditional mechanism of two wheels robot, and a more flexible response. This mechanism can adapt well to the increasingly rapid pace of the competition. In allusion to the mechanism of omni-direction wheels, this paper designs the electrical control system of three nodes in the bottom, which could communicate fast to the laptop with serial port and match the real-time requirements well. According to the problom of hitting power and speed of robot when shooting, this paper designes a motor-driven tongue-shaped spring shooting mechanism, which has a simple mechanical structure, smaller space in size and simple control circuit. This shooting mechanism meets the real-time requirements of the competition better.

本文以RoboCup中型机器人作为研究对象，分别从机器人自身系统和多机器人协作系统两个方面进行了研究，主要研究成果如下：首先，研究了中型机器人的软硬件体系结构问题，针对实时比赛的要求，提出了万向轮机构的设计方案，大大改进了传统两轮机器人结构，动作反应更加灵活，该机构能够很好的适应节奏越来越快的比赛；针对万向轮机构，设计了3节点的底层电机控制系统，它可以通过串口与上层笔记本电脑快速通讯，能够很好的实现实时工作要求；针对机器人射门时击球力量和速度的问题，设计了一套电机驱动的舌形弹簧射门机构，机械结构简单，占用空间体积小，控制电路简单，较好的满足了比赛中实时射门的要求。

Then the hardware and software structure of speed controller based on MC56F8013 were showed.

对控制系统建模和积分分离PI算法进行了详细的分析。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。