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按分类查找All 行业发展研究(146) 

[行业发展研究] zuchengyuanlilunwen

组成原理论文,关于中央处理器发展和技术研究
Composition principle thesis on the central processor development and technical research (2013-07-02, WORD, 38KB, 下载1次)

http://www.pudn.com/Download/item/id/2293851.html

[行业发展研究] weinansong

联轴器属于机械通用零部件范畴,用来联接不同机构中的两根轴(主动轴和从动轴)使之共同旋转以传递扭矩的机械零件。在高速重载的动力传动中,有些联轴器还有缓冲、减振和提高轴系动态性能的作用。联轴器由两半部分组成,分别与主动轴和从动轴联接。一般动力机大都借助于联轴器与工作机相联接,是机械产品轴系传动最常用的联接部件。20世纪后期国内外联轴器产品发展很快,在产品设计时如何从品种甚多、性能各异的各种联轴器中选用能满足机器要求的联轴器,对多数设计人员来讲,始终是一个困扰的问题。
General Machine Components category couplings are used to connect two shafts of different institutions (the drive shaft and the driven shaft) so that transfer torque to rotate together with the mechanical parts. Overloaded power transmission at high speed, some couplings and buffers, vibration and improve the dynamic performance of the role of shafting. Composed by the two halves of the coupling, respectively, and the drive shaft and the driven shaft connected. Most of the general power machine coupling means coupled with the working machine is the most commonly used machinery shaft drive coupling parts. The late 20th century has developed rapidly coupling products at home and abroad, in the product design how many varieties, different performance of the various couplings used to meet the requirements of the machine couplings, for most designers is concerned, is always a difficult problem. (2013-05-23, Visual Basic, 278KB, 下载2次)

http://www.pudn.com/Download/item/id/2255179.html

[行业发展研究] cloud-controller

云控制器在机器人平衡系统中应用与研究,论文论文描述了最新的云控制理论
Multiple rules cloud controller in balance system of wheeled robots (2012-09-10, PDF, 2140KB, 下载11次)

http://www.pudn.com/Download/item/id/1989424.html

[行业发展研究] smart_sensor

在现今的社会,传感器的微型化,智能化,功能多样化以及无线网络化越来越被重视,相较于传统的传感器的体积大,功能单一等不足之处而言,新型传感器也被更多的人来研究,本文将侧重于智能传感器的阐述. 智能化传感器(Smart Sensor)是20世纪80年代末出现的另外一种涉及多种学科的新型传感器系统,它不但能够执行信息处理和信息存储,而且还能够进行逻辑思考和结论判断.
More and more attention in today' s society, miniaturization of sensors, intelligent, functional diversification, and wireless networking, large in size compared to traditional sensors, such as single function of the inadequacies of the new sensor is also more people to study, this article will focus on the elaboration of the smart sensor. intelligent sensors (Smart Sensor) is the late 1980s, another involving a variety of disciplines, new sensor systems, it will not only be able to perform information processing and information storage, but also capable of logical thinking and conclusions of the judgment. (2012-06-26, WORD, 272KB, 下载4次)

http://www.pudn.com/Download/item/id/1923025.html

[行业发展研究] PLCzongsurar

可编程序控制器综述 ( PLC 的发展与应用 ) PLC
Summary of Programmable Logic Controller (PLC development and application) PLC (2012-06-09, PPT, 4174KB, 下载3次)

http://www.pudn.com/Download/item/id/1907353.html

[行业发展研究] flying-control-law

概述了飞行控制律设计的几种主要方法。通过对比自适应飞行控制律和程序调参飞行控制律,总结 了处于飞行控制器设计领域主导地位的程序调参飞行控制律的主要优点和不足,并就程序调参技术在现代飞控领 域的研究现状及其在某先进飞机中的实际应用进行了介绍。最后,针对现代飞机的飞行特点,展望了程序调参飞 行控制律今后可能的发展方向。
Summarizes the flight control law design of several major method. By comparing the adaptive flight control law and procedure parameters tuning flight control law is summarized The flight controller design field is in the leading position of the program and flight control law of the main advantages and disadvantages, and the process parameters tuning technology in the modern flight control broughtThe research status and domain in some advanced aircraft in the practical application are introduced in this paper. Finally, the modern aircraft s characteristics, and looks forward to the program and fly Line control law could in the future development direction. (2012-02-24, matlab, 49KB, 下载42次)

http://www.pudn.com/Download/item/id/1778454.html

[行业发展研究] GB-WSN

传感器网6项标准征求意见稿 文库里的要积分 下下来整理了一下 方便大家阅读
failed to translate (2011-12-30, Visual C++, 23025KB, 下载5次)

http://www.pudn.com/Download/item/id/1746912.html

[行业发展研究] Comparison-study-of-WSN-and--Ad-Hoc

无线传感器网络与传统AdHoc网络的比较研究.无线传感器网络是AdHoc 网络的几大应用领域之一, 但与传统Ad Hoc 网络比有差异, 传统Ad Hoc 网络的协议大部分都不适合于无线传感器网络, 文中从体系结构、协议栈和应用方面对无线传感器网络和传统Ad Hoc 网络进行比较和分析
Wireless sensor networks and traditional comparative study of AdHoc network for wireless sensor network is AdHoc network is one of several applications, but with the traditional Ad Hoc networks are different than traditional Ad Hoc network protocols are not suitable for most wireless sensor networks The article from the architecture, protocol stacks and applications for wireless sensor networks and traditional Ad Hoc Networks for comparison and analysis (2011-10-15, C/C++, 216KB, 下载22次)

http://www.pudn.com/Download/item/id/1669696.html

[行业发展研究] ourdev_615514SCSFRA

在过去的20余年,我国变频器行业发展十分迅速,到目前正开始趋于成熟,主要表现在国产品牌的整体技术水平迅速提高,与外资品牌的竞争正从低层次的价格竞争开始向技术竞争、品牌竞争过渡。进入21世纪以来,我国中低压变频器市场的增长速度高达20 左右,远远超过同期的GDP增速,到2008年我国中低压变频器市场容量已达111.8亿元。受金融风暴影响,2009年的市场增长速度将会大幅度下滑,但全年整个行业仍将略有增长,而且此后增长速度将很快回升。
在过去的20余年,我国变频器行业发展十分迅速,到目前正开始趋于成熟,主要表现在国产品牌的整体技术水平迅速提高,与外资品牌的竞争正从低层次的价格竞争开始向技术竞争、品牌竞争过渡。进入21世纪以来,我国中低压变频器市场的增长速度高达20 左右,远远超过同期的GDP增速,到2008年我国中低压变频器市场容量已达111.8亿元。受金融风暴影响,2009年的市场增长速度将会大幅度下滑,但全年整个行业仍将略有增长,而且此后增长速度将很快回升。 (2011-06-21, Visual C++, 1699KB, 下载2次)

http://www.pudn.com/Download/item/id/1575564.html

[行业发展研究] Value-added-services

使用客户服务器模式,实现增值业务的模拟。
Using client-server model to achieve value-added business simulation. (2011-06-04, Visual C++, 18677KB, 下载6次)

http://www.pudn.com/Download/item/id/1559073.html

[行业发展研究] iec62109-1{ed1-0}_2010

太阳能逆变器安规测试中的电磁兼容部分,逆变器开发的重要参考资料
Solar Inverter Safety part of the electromagnetic compatibility test, the inverter important reference for the development of (2011-06-03, PDF, 1992KB, 下载19次)

http://www.pudn.com/Download/item/id/1557596.html

[行业发展研究] freescale-sensor

freescale加速度传感器,芯杨代理资料简介.
freescale acceleration sensor, the core Yang agency brief. (2011-05-07, DOS, 1104KB, 下载5次)

http://www.pudn.com/Download/item/id/1520979.html

[行业发展研究] DSP

。本文针对三电平高压变频器控制要 求的特点,设计了基于DSP 和FPGA 的控制电路。利用DSP 进行高速浮点计算,满足实时控制的要求;FPGA 并行执行 程序,实现了多路触发信号的同时控制,而且由于采用了硬 件电路完成计算,提高了控制系统的可靠性
. In this paper, three-level voltage inverter control requirements of the features, design and FPGA-based DSP control circuit. High-speed floating-point calculations using DSP to meet the requirements of real-time control FPGA parallel implementation of the program, realized the trigger signal, while multi-channel control, and because use of the hardware circuitry to complete the calculation and improve the reliability of the control system (2010-02-25, C/C++, 313KB, 下载133次)

http://www.pudn.com/Download/item/id/1069719.html

[行业发展研究] vim

编辑器之神vim使用教程,好好看看吧,很详细的
A vehicle assembly code, well let' s see it (2010-02-08, Visual Basic, 1748KB, 下载23次)

http://www.pudn.com/Download/item/id/1061456.html

[行业发展研究] 802.15.4a-2007

对无线传感器网络的标准进行了详细介绍!!!!!!!!!!!!
The standard for wireless sensor networks are described in detail (2009-09-03, Others, 3227KB, 下载46次)

http://www.pudn.com/Download/item/id/899702.html

[行业发展研究] HongKong_DMB-TH

香港地区《数码地面电视接收器的最低技术规格》
DMB-TH stb requrement in HongKong (2009-04-09, PDF, 196KB, 下载2次)

http://www.pudn.com/Download/item/id/707263.html

[行业发展研究] PLC

可编程控制器(PROGRAMMABLE CONTROLLER,简称PC)。与个人计算机的PC相区别,用PLC表示。 PLC是在传统的顺序控制器的基础上引入了微电子技术、计算机技术、自动控制技术和通讯技术而形成的一代新型工业控制装置,目的是用来取代继电器、执行逻辑、记时、计数等顺序控制功能,建立柔性的程控系统。国际电工委员会(IEC)颁布了对PLC的规定:可编程控制器是一种数字运算操作的电子系统,专为在工业环境下应用而设计。它采用可编程序的存贮器,用来在其内部存贮执行逻辑运算、顺序控制、定时、计数和算术运算等操作的指令,并通过数字的、模拟的输入和输出,控制各种类型的机械或生产过程。可编程序控制器及其有关设备,都应按易于与工业控制系统形成一个整体,易于扩充其功能的原则设计。
err (2009-01-05, Others, 168KB, 下载7次)

http://www.pudn.com/Download/item/id/624599.html

[行业发展研究] shuzilvboqi

数字信号处理中数字滤波器的设计基础,讲述用窗函数法和频域抽样法进行数字滤波器的实际例程
Digital signal processing in digital filter design basis, about the use of window function method and frequency domain digital filter sampling method for the actual routine (2008-09-11, Others, 1691KB, 下载14次)

http://www.pudn.com/Download/item/id/544715.html

[行业发展研究] 900MHzRFIDReader

900MHzRFID读写器研究与实现,一篇硕士论文
900MHzRFID reader research and the realization of a master s thesis (2008-06-11, C/C++, 11907KB, 下载18次)

http://www.pudn.com/Download/item/id/487040.html

[行业发展研究] fugaiwenti

传感器网络由大量能量有限的微型传感器节点组成.因此,如何保证在足够覆盖监测区域的同时延长网络的寿命,是一个需要解决的重要问题.为了达到这一目标,一种广泛采用的策略是选出部分能够足够覆盖监测区域的节点作为工作节点,同时关闭其他冗余节点.提出了一个数学模型,使得只要已知监测范围和节点感知半径的比值,就可以计算出达到服务质量期望所需要的节点数量.需要指出的是:与大部分研究覆盖的文献不同,该研究不基于节点的位置信息,因此可以极大地降低硬件成本,并且减少节点获得和维护位置信息的开销.模拟实验结果表明:在随机部署条件下,服务质量期望与实验所得到的实际覆盖度的误差不大于服务质量期望的2% 而对于相同的服务质量期望和实际覆盖度,计算所得的工作节点数量与实验所得的工作节点数量的误差小于计算数量的5%,这表明推导出的节点数量与服务质量期望之间的关系与模拟实验的结果相吻合.该结果可以广泛应用于传感器网络的节点部署、拓扑控制等领域中. (2008-03-22, Others, 261KB, 下载36次)

http://www.pudn.com/Download/item/id/421272.html
总计:146