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characteristic

  • A Perl module implementing receiver-operator-characteristic (ROC) curves with nonparametric confid

    A Perl module implementing receiver-operator-characteristic (ROC) curves with nonparametric confidence bounds

    标签: receiver-operator-characteristic nonparametric implementing module

    上传时间: 2016-01-05

    上传用户:cjl42111

  • Level Crossing Rate in Terms of the characteristic Function: A New Approach for Calculating the Fa

    Level Crossing Rate in Terms of the characteristic Function: A New Approach for Calculating the Fading Rate in Diversity Systems

    标签: characteristic Calculating the Crossing

    上传时间: 2016-02-19

    上传用户:shinesyh

  • Measurement of gamma characteristic(Ca200Sample_Gamma.exe)provides Gamma characteristics of W,R,

    Measurement of gamma characteristic(Ca200Sample_Gamma.exe)provides Gamma characteristics of W,R,G and B. Measurement at 16,32,64,128,256 gradation.

    标签: characteristics characteristic Sample_Gamma Measurement

    上传时间: 2016-12-29

    上传用户:familiarsmile

  • 完整的MP3播放器源码

    ·详细说明:完整的MP3播放器源码。包括列表窗口,音频特性调整功能,仿照winamp。支持换肤。- Complete MP3 player source code. Including tabulates the window, the audio frequency characteristic adjustment function, imitates winamp. The support t

    标签: MP3 播放器 源码

    上传时间: 2013-06-17

    上传用户:郭静0516

  • 相敏检波电路鉴相特性的仿真研究

    分析了调幅信号和载波信号之间的相位差与调制信号的极性的对应关系,得出了相敏检波电路输出电压的极性与调制信号的极性有对应关系的结论。为了验证相敏检波电路的这一特性,给出3 个电路方案,分别选用理想元件和实际元件,采用Multisim 对其进行仿真实验,直观形象地演示了相敏检波电路的鉴相特性,是传统的实际操作实验所不可比拟的。关键词:相敏检波;鉴相特性;Multisim;电路仿真 Abstract : The corresponding relation between modulation signal polarity and difference phases of amplitudemodulated signal and the carrier signal ,the polarity of phase2sensitive detecting circuit output voltage and the polarity of modulation signal are correspondent . In order to verify this characteristic ,three elect ric circuit s plans are produced ,idea element s and actual element s are selected respectively. Using Multisim to carry on a simulation experiment ,and then demonst rating the phase detecting characteristic of the phase sensitive circuit vividly and directly. Which is t raditional practical experience cannot be com pared.Keywords :phase sensitive detection ;phase2detecting characteristic ;Multisim;circuit simulation

    标签: 相敏检波 电路 仿真研究 鉴相

    上传时间: 2013-11-23

    上传用户:guanhuihong

  • 基于UC3854A控制的PFC中分岔现象仿真研究

       为深入了解基于UC3854A控制的PFC变换器中的动力学特性,研究系统参数变化对变换器中分岔现象的影响,在建立Boost PFC变换器双闭环数学模型的基础上,用Matlab软件对变换器中慢时标分岔及混沌等不稳定现象进行了仿真。在对PFC变换器中慢时标分岔现象仿真的基础上,分析了系统参数变化对分岔点的影响,并进行了仿真验证。仿真结果清晰地显示了输入整流电压的幅值变化对系统分岔点的影响。 Abstract:  In order to better understand the dynamics characteristic of power factor correction converter based on UC3854A, and make the way that parameters change influences the bifurcation phenomena of the system clearly. The math model of the two closed loop circuits to the Boost PFC (Power Factor Correction) converter controller was built. Then, with the help of Matlab, the simulation for nonlinear phenomena such as chaos and slow-scale bifurcation in the PFC converter was made. Finally the factors that have influence to the phenomenon of bifurcation under slow-scale in PFC converter were analyzed. The simulation results clearly show the parameters change influences the bifurcation point of the system.

    标签: 3854A 3854 PFC UC

    上传时间: 2013-10-17

    上传用户:杜莹12345

  • TLC1549串口传输与单片机的AD设计

    详细介绍了TLC1549系列模数转换器的特点及工作原理,然后根据TLC1549的工作时序和A/D转换原理针对实际问题编写了详细的汇编语言程序。 Abstract:  A basic principle and characteristic of TLC1549 analog-to-digital converter are introduced? detailedly in this article.Through engineering-oriented illustration,a microcomputer programmer base on basic principle and time sequence of TLC1549 is writted.

    标签: 1549 TLC 串口 传输

    上传时间: 2014-07-16

    上传用户:blans

  • 低噪声电压基准的噪声测量

      Frequently, voltage reference stability and noise defi nemeasurement limits in instrumentation systems. In particular,reference noise often sets stable resolution limits.Reference voltages have decreased with the continuingdrop in system power supply voltages, making referencenoise increasingly important. The compressed signalprocessing range mandates a commensurate reductionin reference noise to maintain resolution. Noise ultimatelytranslates into quantization uncertainty in A to D converters,introducing jitter in applications such as scales, inertialnavigation systems, infrared thermography, DVMs andmedical imaging apparatus. A new low voltage reference,the LTC6655, has only 0.3ppm (775nV) noise at 2.5VOUT.Figure 1 lists salient specifi cations in tabular form. Accuracyand temperature coeffi cient are characteristic ofhigh grade, low voltage references. 0.1Hz to 10Hz noise,particularly noteworthy, is unequalled by any low voltageelectronic reference.

    标签: 低噪声 电压基准 噪声测量

    上传时间: 2013-10-30

    上传用户:wxhwjf

  • Coaxial feed structures are widely used in ultra-wide band antennas . This paper modeled the charact

    Coaxial feed structures are widely used in ultra-wide band antennas . This paper modeled the characteristic of the monopole antenna feeded by coaxial line by FDTD in the time-domiain,which showes that . Firstly, it introduced the theory of the arithmetic and the particularly realization in the calculation then it described the use in the time-domain finally it analysed several characteristics of the monopole antenna. The arithmetic used in the microstrip antenna is also a quick and economical way to design the antenna.

    标签: structures ultra-wide antennas Coaxial

    上传时间: 2016-06-28

    上传用户:朗朗乾坤

  • To review what a metaball is, and how to render them and to describe a new optimization I ve made

    To review what a metaball is, and how to render them and to describe a new optimization I ve made for rendering metaballs. For complex scenes, it can render hundreds of times faster, though I m certain others have discovered this trick as well. It does very slightly change the characteristic shape of the blobs, but there is no loss in image quality whatsoever. (I actually developed all this about two years ago, but just now felt like writing it all down, and had the time!)

    标签: optimization and metaball describe

    上传时间: 2013-12-27

    上传用户:彭玖华