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ISO14230-4-2000
道路车辆的故障诊断国际标准第四部分－－喷射标准(Road vehicles to international standards of fault diagnosis Part IV- jet standard)
- 2008-05-11 22:19:42下载
- 积分：1
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Antenna2008
Optic communication antenna angle
- 2006-12-18 19:55:53下载
- 积分：1
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Thomas
当线性代数联立方程组的系数矩阵为三对角阵T时，可将T分解为主对角元素为1的下三角阵L和另一个右三角阵R的积。(Simultaneous linear algebraic equations when the coefficient matrix is tridiagonal matrix T, can break down the main diagonal elements of T 1 of the lower triangular matrix L and the other right-triangular matrix R of the product.)
- 2010-12-21 09:41:08下载
- 积分：1
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lab1
说明： 尝试自定义卷积函数，包含功能测试实现代码。(Custom convolution function and test implementation)
- 2019-12-16 11:05:59下载
- 积分：1
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Detection-of-short-duration-power-quality-disturba
优秀论文及配套源码。电压暂降是动态电能质量问题中最受关注的热点之一。大量新型电力电子设备的广泛使用对电网电能质量的要求越来越高，而且电压暂降在电网中又具有一定的传播性。因此，无论从电网还是用户都迫切需要对电压暂降进行研究和治理。对电压暂降的检测是解决电压暂降的前提条件，故本论文主要对电压暂降的检测方法进行研究。
本文分析了国内外短时电能质量扰动检测的研究现状，并着重讨论了短路故障、感应电动机启动和变压器激磁三种电压暂降扰动情况下电压暂降的特性；在此基础上选择了基于S变换的短时电能质量扰动检测方法，从S变换的结果S模矩阵及S复矩阵中提取出所需数据并以此来对各种扰动情况下的电压暂降的幅值、相位跳变、持续时间和谐波含量进行分析。仿真结果表明，该方法很好地实现了对电压暂降各特征量的检测。
(The voltage sag is one of most hot topics in dynamic electric energy problems. Masses of new power and electron facilities have been put into use widely, requiring a high quality of electric network and power, chiefly the voltage sag. Moreover, the voltage sag can spread in the electric network. So people have every reason to research and control the voltage sag. However, before developing the voltage sag, people have to detect it. On account of the above, this essay will chiefly focus on the detect methods of the voltage sags.
In this paper, the status of the short duration power quality disturbance based on the different method are researched firstly, and emphasizes the characteristic of the voltage sag under the situation of the three kinds of voltage sag disturbances like the short circuit fault, induction motor start-up and transformer excitation. On the basis of the above, the short duration power quality disturbance detection method based on S transform is chosen. The complex m)
- 2021-04-08 19:39:00下载
- 积分：1
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electromagnetic-radiation
电磁射线理论的经典教材，通信信道仿真必备(Classic textbook theory of electromagnetic radiation, an essential communication channel simulation)
- 2013-12-04 12:50:57下载
- 积分：1
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SAR_stripmap_code
Stripmap and Spotlight Synthetic aperture radar matlab code....
- 2009-03-04 21:30:25下载
- 积分：1
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A_study_of_IEEE_802.16a_OFDM-PHY_Baseband
欧洲的一个学生，对802.16a的硕士论文。有OFDM的源代码。(Europe 1 students and the 802.16a master's thesis. OFDM is the source code.)
- 2006-11-08 17:42:22下载
- 积分：1
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main
基于梯度的亚像素配准算法的Matlab程序
(Gradient-based sub-pixel registration algorithm Matlab procedures)
- 2014-01-27 17:36:00下载
- 积分：1
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discrete_rnd
说明： 本代码可实现在MATLAB环境下获取随机分布的数(This code can be realized in the MATLAB environment to obtain the probability of paper, to facilitate data analysis and processing)
- 2009-08-23 16:41:16下载
- 积分：1
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