Description: 110kV同杆双回输电线路的雷电性能,通过应用同塔双回线路雷电性能的计算研究表明，该方式具有较好的雷电性能。通过珠海供电局工程中的试用，已初步验证了其效果，可继续积累运行经验-with 110kV double-circuit transmission lines lightning performance, through the application of the same double-circuit transmission line towers Lightning Performance Study shows that the method has better performance lightning. Through Zhuhai Power Project of the trial, the preliminary results of its certification may continue to accumulate operating experience Platform: |
Size: 30685 |
Author:刘芳非 |
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Description: 110kV同杆双回输电线路的雷电性能,通过应用同塔双回线路雷电性能的计算研究表明，该方式具有较好的雷电性能。通过珠海供电局工程中的试用，已初步验证了其效果，可继续积累运行经验-with 110kV double-circuit transmission lines lightning performance, through the application of the same double-circuit transmission line towers Lightning Performance Study shows that the method has better performance lightning. Through Zhuhai Power Project of the trial, the preliminary results of its certification may continue to accumulate operating experience Platform: |
Size: 30720 |
Author:刘芳非 |
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Description: 时间域有限差分法（TD-FDM）源代码，用于计算任意传输线问题，最后与理论解比较。进一步说明见程序文件timeUpdt.m-Time domain finite difference method (TD-FDM) source code, used to calculate the arbitrary transmission line problems, and finally compared with the theoretical solution. Further details see the program file timeUpdt.m Platform: |
Size: 4096 |
Author:汪巍 |
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Description: 用数值算法这里用的是矩量法计算地面上方单导体传输线的电容-Numerical algorithm used here is the method of moments calculated the ground above the single-conductor transmission line capacitance Platform: |
Size: 13312 |
Author:卞苓洁 |
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Description: 用数值算法这里用的是矩量法计算地面上方单导体传输线的电容 -Numerical algorithm used here is the method of moments calculated the ground above the single-conductor transmission line capacitance Platform: |
Size: 13312 |
Author:卞苓洁 |
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Description: 提出了一种基于CCD图像的塑料齿轮齿形缺陷检测方法。采用A102FCCD数字摄像头采集塑料齿轮的图像, 经
过IEEE1394数字接口卡传输到计算机。对含有噪声的原始数字图像实施平滑处理、图像分割、轮廓提取及细化等处理,
使图像转变成易于检测的单像素宽边缘信息。检测了齿轮中心孔的圆心, 进而对齿轮齿形缺陷进行检测。理论分析及实验
结果表明该方法检测速度快、精度高, 满足产品在线检测的要求。-A CCD image of the plastic-based gear defect detection methods. A102FCCD using digital camera images collected plastic gears, the transmission IEEE1394 digital interface card to a computer. Containing the original digital image noise smoothing the implementation of treatment, image segmentation, contour extraction and refining, such as treatment, so that image into a single easy to detect the edge information pixels wide. Detection of the gear center hole of the center of a circle, and thus gear defect detection. Theoretical analysis and experimental results show that the method of detection of high speed and accuracy to meet the requirements of product-line detection. Platform: |
Size: 391168 |
Author:高子 |
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Description: 这是一段模拟电荷法（scm)的matlab源程序，求解了超高压输电线路下方工频电场，仿真出了离地面1.5m处的二维电场模型，该程序经过验证，准确无误，谢谢。-This is a charge simulation method (scm) of matlab source, solving the EHV transmission line-frequency electric field below, simulation 1.5m from the ground out of the Agency Platform: |
Size: 1024 |
Author:丁镇 |
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Description: 采用有限差分法计算屏蔽微带传输线的电位及其电容，程序由matlab实现-Finite difference method using shielded microstrip transmission line potential and its capacitance, procedures to achieve by the matlab Platform: |
Size: 340992 |
Author:周期 |
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Description: 并行通信和串行通信是CPU与外部设备之间进行信息交换的基本方法。采用并行通信时，构成一个字符或数据的各位同时传送，每一位都占用一条通信线，另外还需要联络以保证和外围设备协调地工作，它具有较高的传输速度。但由于在长线上驱动和接收信号较困难，驱动和接收电路较复杂，因此并行通信的传输距离受到限制，这种通信方式多用于计算机内部，或者作为计算机与近距离外围设备传输信息用。-Parallel and serial communication is communication between the CPU and the external equipment to carry out the basic method of information exchange. Parallel communication to form a character or data you send, every occupier of a communication line, also need to contact to ensure coordination and peripherals to work, it has a higher transmission speed. However, due to the long-term drive and receive the signal more difficult to drive and receive circuits more complex, so the transmission distance parallel communication is limited, this means of communication used for the computer itself, or as a close-up computer and peripheral equipment used to transmit information. Platform: |
Size: 11264 |
Author:jiangyan |
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Description: Variant变量可以在COM/DCOM接口方法中传递（传入、传出）不定长结构数组，但是需要打包和解包，效率比较低。这个例子使用了size_is指定长度的方法，本是从MSDN上看到的，但是MSDN上给出的例子不够具体，所以费了些时间摸索，最后试通，给刚接触COM的朋友分享（老家伙们可以直接无视）。本例子由于是工作需要做得试验程序，因此其中存在少量冗余代码，大家注意一下就行了，还有，减少传递的参数个数时，所传递的实时（随机模拟）数据只是减了最后一个（没有减去相对应的），这个Bug不妨碍大局，因此存留，虽然Server支持DCOM，但是Client需要在本地运行，如果想Remote，稍微修改一下既可。-Variant variables can be in the COM/DCOM interface method of delivery (incoming, outgoing) variable-length array of structures, but it needs to be packaged reconciliation package, the efficiency is relatively low. This example uses the method size_is specified length, this is seen from the MSDN, but the example given on MSDN is not specific enough, it took some time to explore, the final test pass, to a friend new to COM sharing (the old guy They can ignore). This example needs to be done because it is the work of testing procedures, and therefore, there is a small amount of redundant code, we take note of the line, and also to reduce the number of parameters passed when the transmission of real-time (stochastic simulation) data only by the last one (No less opposite page), this Bug is without prejudice to the overall situation, therefore retained, although the Server supports DCOM, but the Client needs to run locally, if you want Remote, a little change it can. Platform: |
Size: 358400 |
Author:seaskyfox |
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Description: 地面上方单导线传输线的单位长度电容的矩量法求解-Ground above the single-wire transmission line capacitance per unit length of the moment method Platform: |
Size: 1024 |
Author:王金涛 |
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Description: 在电力系统通信中，数字光纤通信由于其本身的优点得到越来越广泛的应用。数字光纤通信系统中，从电端机传输过来的电信号均要结合数字光纤通信传输的特点经过线路码型的转换。通过线路码型的转变平衡数字码流中的“0”和“1”码字，从而避免码流中出现长“0”或者长“1”的现象。在数字光纤通信系统中比较常用的线路码型就是mBnB码型，mBnB线路码型的最大优点就是最大相同码元连码和少、定时信息丰富、并且有简单成熟的误码监测与码组同步的方法。
-In the power system communications, digital optical fiber communication because of its own merits to be more widely used. Digital optical fiber communication systems, from electrical signals transmitted over end machines have to combine the characteristics of digital optical communication transmission line pattern after the conversion. Through the balance of the line pattern of change in the digital stream, " 0" and " 1" code word, thus avoiding the emergence of a long stream of " 0" or long " a" phenomenon. In digital fiber optic communication systems commonly used in the line pattern is mBnB pattern, mBnB line coding of the biggest advantage is the greatest symbol with the same code and less time information-rich, mature and have a simple code group synchronization error monitoring and the method. Platform: |
Size: 1456128 |
Author:chenyingying |
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Description: 基于改进半软阈值降噪法的输电线路故障测距.-Based on the improved half soft threshold denoising method in the fault location of transmission line. Platform: |
Size: 513024 |
Author: |
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Description: The aim of this assignment is to use the Finite Difference Method to numerically determine the transverse
electromagnetic (TEM) transmission line (TL) parameters of a line with a coupled ribbon shaped cross-section. To
achieve this, a computer program was developed to perform the finite difference calculation the computer program
used in this report was Matlab. -The aim of this assignment is to use the Finite Difference Method to numerically determine the transverse
electromagnetic (TEM) transmission line (TL) parameters of a line with a coupled ribbon shaped cross-section. To
achieve this, a computer program was developed to perform the finite difference calculation the computer program
used in this report was Matlab. Platform: |
Size: 2048 |
Author:Noidea |
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Description: 平面波是一种理想的电磁波，许多复杂的电磁波能分解成均匀平面波的叠加形式，研究平面波的传输问题有很强的现实意义，本文利用场匹配法和等效传输线法对平面波入射分成介质问题进行分析，计算出总的反射系数，并利用Matlab软件对频率在0-10GHz的平面波进行了仿真对比，加深了对平面波传输的理解。-Plane wave is an ideal electromagnetic waves, many of the complex electromagnetic waves can break down into a uniform plane wave superposition form, strong practical significance in the study of plane wave transmission problem, this article use field matching method and the equivalent transmission line method for plane wave incident divided into problems with media conduct analysis, calculate the total reflection coefficient, and the use of Matlab software plane wave in the 10GHz frequency simulation compared to deepen the understanding of plane wave transmission. Platform: |
Size: 1024 |
Author:shixy088 |
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Description: 1．EMIF 接口
TMS320F28335DSP 的扩展存储器接口(EMIF)用来与大多数外围设备进行连接，典型应
用如连接片外扩展存储器等。这一接口提供地址连线、数据连线和一组控制线。ICETEK–
F28335-A 将这些扩展线引到了板上的扩展插座上供扩展使用。
2．蜂鸣器由DSP 上EQEP1S 设置为通用I/O 管脚输出控制，可将此管脚上的频率输出转换
成声音输出。
控制的方法是使用 DSP 通用定时器设置EQEP1S 管脚以一定的频率改变高低状态，输
出方波。对于通用定时器周期寄存器的设置，计数值为所需频率计数值的二分之一。
音乐的频率(C 调)：
C D E F G A B ^C
1 2 3 4 5 6 7 ^1
C: 264, 297, 330,352, 396, 440,495, 528
4． 蜂鸣器的连接：由于选用的蜂鸣器所需电流较小，所以采用将DSP 通用I/O 引脚直接
驱动的方式。-The 1.EMIF interface
Extended TMS320F28335DSP memory interface (EMIF) is used to connect with the most peripheral equipment, typical application
Extended memory, such as connecting piece. This interface provides the address lines, data lines and a set of control line. ICETEK-
F28335-A will lead to the expansion of these extended line socket for plate on the expansion of the use of.
2 buzzer by the DSP EQEP1S set to I/O pin output control, the frequency of output this pin on the conversion
A sound output.
The control method is to use the DSP generic timer EQEP1S pin changes state level with certain frequency, transmission
A square wave. For general timer register settings, count values for the required frequency count of 1/2.
The frequency of music (C):
C D E F G A B ^C
1234567 ^1
C: 264, 297, 330352, 396, 440495, 528
Connect the 4 buzzer buzzer: as the current required is small, so the DSP I/O pin directly
Driving mode. Platform: |
Size: 463872 |
Author:hlp |
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Description: 根据透射反射曲线求解超材料介电常数 磁导率 阻抗 折射率-calculating the permittivity、permeability、impedance andrefraction indice of metamaterial based on transmission and reflectance coefficient. Platform: |
Size: 26624 |
Author:苏照贤 |
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Description: This paper proposes a simple and efficient method to
improve the performance of the lumped parameters transmission
line model used to simulate electromagnetic transients in electric
power systems. The lumped parameters model presents in its
simulations numeric spurious oscillations that do not represent
the real value of the transient.-This paper proposes a simple and efficient method to
improve the performance of the lumped parameters transmission
line model used to simulate electromagnetic transients in electric
power systems. The lumped parameters model presents in its
simulations numeric spurious oscillations that do not represent
the real value of the transient. Platform: |
Size: 542720 |
Author:fouzirock |
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Search - Method of transmission line