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  1. 编程语言:所有
  2. 代码类别:行业发展研究
  3. 发布时间:不限
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1. MEMS-based-spectrometer

  一种基于MEMS技术的光谱仪系统介绍及发展情况介绍。(Introduce a systematic introduction and development of MEMS-based spectrometer.)

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2012-08-09发布

2. AARMM7zipR

  一种基于ARM7的便携式式心电监护仪及心电分析的研究 (An analysis based on the ARM7-portable ECG and ECG)

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2012-07-26发布

3. Control-Strategy

  。归纳和讨论了智能微电网的控制理论,将控制策略划分为电网跟随控制和电 网形成控制两大类,每一类同时又包含了交互式及非交互式控制思想,给出了清晰的定义和判断标准, 并提出智能微电网控制策略未来的发展方向。(Analysis was made to its system configuration and operation characteristics, the control theory of intelligent microgrid summarized and discussed to divide the control strategy into grid-following and grid-forming control two categories, each of which included interactive and non interactive control thinking with clear definition and determinant standard. This paper raised the microgrid control strategy in the future.)

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2012-07-16发布

4. SKC

  IBM 云技术的说明,深入浅出地对IBM的易云技术进行讲解,有助于在中国地区的云技术推广和普及。(IBM cloud description of the techniques in layman' s language of IBM' s easy to cloud technology to explain, help in the cloud technology and the popularization of)

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2012-06-27发布

5. Pivot-Point-Break-Strategy

  光大证券--金融工程-股指期货量化交易策略研究:枢轴突破策略(Everbright Securities- financial engineering- Stock index futures quantify Trading Strategies: Pivot breakthrough strategy)

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2012-06-13发布

6. 1

说明:  经过二十余年的快速发展, 空间激光通信的研究重心逐渐从高精度ATP分系统向高速 率通信分系统转移 紧密跟踪空间激光通信的国际发展最新动态,从通信带宽和链路功率两个方面, 针对通信发射单元、接收单元和信道特性,分析了提高空间激光通信传输速率的技术难度与途径.分 别阐述了波长1 550 nm、基于EDFA 功放和前放技术,空间相干技术,光偏振复用技术.光波分复用 技术的基本原理、性能指标及关键技术,为高速率空间激光通信提供了技术参考(After more than 20 years the rapid development of space laser communications research center of gravity gradually transferred to the high-speed communication subsystem from the high-precision ATP subsystems closely track the latest developments of the international development of space laser communications, communication bandwidth and link power of two. communications transmitter unit, receiver unit and channel characteristics, technical difficulty and ways to improve the transfer rate of space laser communications. Described wavelength of 550 nm, based on EDFA amplifier and put technology, spatial coherence, optical polarization multiplexing. The basic principles of optical wavelength division multiplexing technology, performance indicators and key technologies, and provide a technical reference for high-rate space laser communications)

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2012-05-31发布

7. VSCF

  变速恒频风力发电技术风力发电具有一些自身所拥有的特点,因此如何提高整个风力发电系统的效率、性能以及其输出电能质量,是当今风力发电研究的重点也是风力发电研究的发展方向。目前已有的风力发电技术主要有四类:定桨距调节技术、变桨距调节技术、主动失速调剂技术、变速恒频技术。因定桨距调节技术产生的时间比较早,并且现在的风力发电系统中不再使用因此不做详细介绍。(VSCF wind power generation technology)

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2012-05-29发布

8. the-resource-scheduling

  该论文介绍了云计算环境下的资源调度方法。(this paper introduces the resource scheduling in cloud computing environment)

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2012-05-23发布

9. biyesejitognxinxitong

  中文摘要 正交频分复用( OFDM , Orthogonal Frequency Division Multiplexing)是当前一种非常热门的通信技术。它即可以被看作是一种 调制技术,也可以被看作是一种复用技术。由于它具有抗多径衰落和频谱 利用率高的特点,因此被广泛应用于高速数字通信领域,比如应用于IEEE 802.11a无线局域网(WLAN)的物理层等等。 我的毕业设计的核心任务是:采用 FPGA 来实现一个基于OFDM 技术 的通信系统中的基带数据处理部分,即调制解调器。其中发射部分的调制 器包括:信道编码(Reed-Solomon 编码),交织,星座映射,FFT和插 入循环前缀等模块。我另外制作了相应的解调器,可以实现上述功能的逆 变换。 另外,我还对OFDM技术, IEEE 802.11a的标准文献,基于Simulink 的 OFDM 模型和仿真,ALTERA 公司的技术和 IP Core 的使用等方面进 行了研究。这些在文章中都有体现。 (Abstract Orthogonal frequency division multiplexing (OFDM, Orthogonal the Frequency Division, Multiplexing) is a very popular communication technology. It can be seen as a Modulation technique can also be seen as a multiplexing technique. Because of its resistance to multipath fading and spectrum High utilization characteristics, and is widely used in high-speed digital communications, such as used in IEEE 802.11a wireless LAN (WLAN) physical layer. The core mission of my graduation project: FPGA to implement a technology based on OFDM Communication systems in baseband data processing part, ie the modem. These emission part of the modulation Includes: channel coding (Reed-Solomon coding), interleaving, constellation mapping, FFT and interpolation Into the cyclic prefix modules. I also produced a corresponding demodulator can achieve the inverse of the above functions Transformation. In addition, OFDM technology, the IEEE 802.11a standard literature, based on Simulink )

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2012-05-20发布

10. stream-forming

  这个是波束赋形的介绍资料,非常详细,适合最信号处理(尤其是天线信号处理)的战友(my god. it is stream forming resource..)

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2012-05-18发布

11. Energy-Detection-of-Unknown-Deterministic-Signals

  most important paper in energy detection and alla paper refer to it

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2012-05-16发布

12. Diagnosis-and-Fault-Tolerant-Control

  In this work we introduce a recent implicit fault tolerant control technique for the permanent magnet synchronous machine. After a state of the art in the FTC domain, we elaborate the complete model of the machine witch allow to study its behavior in different cases. The unknown torque load and parametric variations are compensated by the robust backstepping control low but in order to detect and compensate faults, we use this technique witch we study in detail. We also propose a new method for generating compensation terms in the control low.

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2012-05-09发布

13. Technical_overview_CitectSCADA

  This is Technical overview CitectSCADA, it described the total technical details for the scada system.

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2012-05-03发布

14. Spatial-Modulation-Optimal-Detection

  这是另外一种方式的对于SM系统的性能分析,与传统的方式相比这种方式更加的简单,明了,利于阅读。(other way to analaysis the performance of SM。 it is queit simply than the tanditional ways)

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2012-04-26发布

15. Spatial-Modulation

  spaital modulation是08年开始盛行的一种空间调制技术,他相比于v-blast,mrc等方式有了长足的进步。(Spatial modulation (SM) is a recently developedtransmission technique that uses multiple antennas.)

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2012-04-26发布

16. DFIG

  关于DFIG的低压穿越能力的研究。对以后实现低压穿越做一些探索性的工作(Along with the sharp increase in the proportion of wind power supply some areas the impact of Large-scale wind farms for the stability of regional power grid is more significant. The research on low voltage ride-through (LVRT) of wind power system based on doubly-fed induction generators (DFIG) becomes a hot issue. In this paper ,Firstly introduces the concept of low voltage ride-through technology, The standards of LVRT of some European countries are presented, And then analyses and compares the kinds of common realize low voltage ride- technology and improve control strategy. The transient characteristics of DFIG when the grid voltage sagging.)

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2012-03-18发布

17. Wireless-coverage-market-

  无线覆盖市场月度监测报告、行业发展报告文件(monthly monitoring report)

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2012-03-05发布

18. Real-time-detection-of-negative

  同相牵引供电系统旨在实现电能质量的综合补偿。提出了一种基于同步坐标变换的电流检测方法,能实时准确地检测 出负载电流的基波正序有功分量、基波正序无功分量、基波负序分量以及谐波分量,为综合补偿提供了基础。电能质量的补 偿力度与设备容量之间存在非线性关系。提出补偿度的概念,并给出补偿度与电能质量参数的关系,通过给定电能质量期望 参数,实时调整负序、谐波以及无功补偿度,使得综合潮流控制器容量在各电能质量补偿参数之间得到实时优化配置,从而 实现同相供电系统容量优化满意补偿。理论推导和仿真结果验证了所提方法的正确性和可行性。(The cophase traction power supply system aims at achieving power quality comprehensive compensation.A current detection method based on synchronous reference frame transformation is proposed.The method can decompose the load current real-timely into fundamental positive-sequence active component,fundamental positive-sequence reactive component,fundamental negative-sequence component and harmonic component,which lays a foundation for comprehensive compensation.There are nonlinear relation between compensation strength of power quality and device capacity.The paper proposes the concept of compensation degree and gives the relationship between compensation degree and power quality parameters.By giving expected power quality parameters,it adjusts compensation ratios of negative,reactive and harmonics instantaneously,so that the IPFC capacity can be allocated between power quality compensating parameters optimally and real-timely,thus achieving capacity optimal satisfactory compensa)

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2012-03-01发布

19. Study-of-VSC-HVDC-Controller-

  风电潮流的波动会引起并网系统公共连接点(PCC)电压的波动。在基于电压源换流 器的高压直流输电(VSC-HVDC)交直流混合风电场并网系统中,控制VSC-HVDC 送端站注入 到PCC 点的无功功率可以抑制电压波动。本文讨论了VSC-HVDC 的无功功率控制器和定电压控制 器抑制电压波动的原理。基于电磁暂态软件PSCAD/EMTDC 建立了并网风电场模型、VSC-HVDC 模型及控制系统模型。仿真结果表明VSC-HVDC 采用定电压控制器的并网系统能更好的抑制电 压波动,采用无功功率控制器的系统具有较好的风电场并网性能。(Reactive power variation of integration wind farm may cause point of common coupling (PCC) voltage fluctuation. In hybrid wind farm integration system based on HVDC of voltage source converter (VSC-HVDC), the voltage fluctuation can be alleviated by compensating reactive power to PCC from VSC-HVDC sending end. Therefore, the reactive power controller and the stable voltage controller to alleviate voltage fluctuation are studied in the paper. The integration wind farm, VSC-HVDC and their controller models are set up by PSCAD/EMTDC. The simulation results show that the integration system adopted stable voltage controller has a better performance to alleviate voltage fluctuation. However the system adopted reactive controller has a good wind farm integration capability.)

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2012-03-01发布

20. 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.)

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2012-02-24发布