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下垂
说明： 下垂控制在逆变器型微电网控制中得到了广泛应用。当线路呈阻性时,有功功率和无功功率存在较强耦合,影响了下垂控制的性能。目前提出了两大类解决方法:一类方法通过控制参数的选取使逆变器的等效输出阻抗在基频段呈感性,但该方法的输出阻抗受制于控制参数并且存在较大缺陷;另一类方法用逆变器输出电流和虚拟阻抗计算电压降,从指令电压中减去该电压降,达到模拟实际阻抗的作用,效果更优,但对其机理缺乏阐述,且存在逆变器输出电压偏差问题。(Droop control is widely used in inverter based microgrid control. When the line is resistive, there is a strong coupling between active power and reactive power, which affects the performance of droop control. At present, two kinds of solutions are proposed: one is to make the equivalent output impedance of the inverter inductive in the fundamental frequency band by selecting the control parameters, but the output impedance of this method is subject to the control parameters and has great defects; the other is to calculate the voltage drop by using the output current and virtual impedance of the inverter and subtract the voltage drop from the command voltage to simulate the actual impedance, The effect is better, but its mechanism is lack of elaboration, and there is the problem of inverter output voltage deviation.)
- 2021-01-31 20:33:07下载
- 积分：1
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maibodeal
说明： matlab对脉搏信号的去噪、滤波、特征提取。(Matlab denoising, filtering and feature extraction of pulse signal.)
- 2020-06-16 02:40:02下载
- 积分：1
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GetWindowsPassWord
该程序用于在用户登陆状态下获取用户的登陆密码。原理是windows 2003 将用户的密码存储在 lsass.exe 的指定偏移的内存中。通过对该进程内存的扫描即可获取系统密码。(the procedure for landing on a user's state of the user's password landing. The principle is windows 2003 to the password stored in the designated offset lsass.exe memory China. Through the process of memory can be obtained by scanning system password.)
- 2006-10-26 10:46:03下载
- 积分：1
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卫星通信中数字调相信号调制方式识别方法研究
说明： 针对数字卫星常用的 7 种通信信号调制方式(QPSK、8PSK、16QAM、32QAM、64QAM、16APSK、32APSK)，对零中心归一化瞬时幅度谱密度最大值、四次方谱、幅度、高阶累积量四种特征参数进行了分析，提出了一种联合特征参数的信号调制识别方法．(Aiming at seven communication signal modulation modes commonly used in digital satellite (QPSK, 8PSK, 16QAM, 32QAM, 64QAM, 16APSK and 32APSK), four characteristic parameters of zero-center normalized instantaneous amplitude spectral density, quadratic spectrum, amplitude and high-order cumulant are analyzed, and a signal modulation recognition method of joint characteristic parameters is proposed. Method.)
- 2020-06-21 09:20:02下载
- 积分：1
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网络编程中经常要用到的对ip地址＆端口的扫描，此例程提供了一种端口扫描方法...
网络编程中经常要用到的对ip地址＆端口的扫描，此例程提供了一种端口扫描方法-network programming to the regular use of the ip address & port scan, the routines provide a port scan methods
- 2022-03-20 07:09:09下载
- 积分：1
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ping命令是用来查看网络上另一个主机系统的网络连接是否正常的一个工具。ping命令的工作原理是：向网络上的另一个主机系统发送ICMP报文，如果指定系统得到了报...
ping命令是用来查看网络上另一个主机系统的网络连接是否正常的一个工具。ping命令的工作原理是：向网络上的另一个主机系统发送ICMP报文，如果指定系统得到了报文，它将把报文一模一样地传回给发送者，这有点象潜水艇声纳系统中使用的发声装置。-ping command is used to view the network to another host system
- 2022-08-02 19:41:17下载
- 积分：1
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54643547
VB采用最小二乘法演示如何在VB中实现线性拟合和二次拟合。(VB using the least square method demonstrates how to implement linear and two order curve fitting in VB.)
- 2013-11-04 08:22:28下载
- 积分：1
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nnalog
恒模算法(CMA)是实际中应用最广的一种盲均衡算法,这里主要时提出了改进的lc-cma算法的源程序代码()
- 2018-02-01 17:22:07下载
- 积分：1
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bst
Create Tbst-tree algorithm
The algorithm discussed in the course data structure is
- 2011-01-21 00:08:24下载
- 积分：1
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SIFT_image_mosaic
实现SIFT特征点的检测及图像拼接功能，主要在原来作者的基础上添加了显示全部特征点或者只显示重叠区域特征点，能够直接使用(Achieve SIFT feature point detection and image stitching function, mainly on the basis of the original author to add a point or show all the characteristics of overlap only feature points can be used directly)
- 2011-08-06 20:54:27下载
- 积分：1
