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full_controlled_single_phase_rectifier_waveforms_
full wave rectifierDuring the period from 伪 to 蟺, the input voltage vs input current is are positive and the power flows from supply to the load. The converter is said to be operated at rectification mode .During the period from 蟺 to 蟺+伪 , the input voltage vs is negative and the input current is is positive and reverse power flows from load to the supply. The converter is said to be operated in inversion mode. Depending on the value of 伪, average output voltage can be either positive or negative and hence provides 2 quadrant operation.
- 2009-03-10 01:35:16下载
- 积分：1
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JPEGimageCompressiontechniquesimplementationandopt
摘 要
文章以空间监控系统为背景,深入研究了JPEG图像压缩标准的实现方法,并基于FPGA对其进行了实现和优化。文中给出了详细的实现方法和优化过程,测试表明达到了很好的效果。
简单介绍了有损静态图像压缩当前有两种比较流行的标准JPEG和JPEG2000。说明了用JPEG方法压缩的原因。
介绍JPEG基本原理：JPEG对灰度图像的压缩处理过程主要包括:图像分割,离散余弦变换(DCT),量化(Quantization),“Z”形排序(Zigzag Scan),差分脉冲编码调制(Differential Pulse Code Modulation,DPCM)对直流系数(DC),行程长度编码(Run-Length Encoding,RLE)对交流系数(AC),霍夫曼(Huffman)编码等。
JPEG标准的特点是离散余弦变换。
比较详细介绍压缩系统的构成和实现。实现提及步骤， JPEG压缩模块设计和编码模块实现细节。
(Abstract
Article in the space monitoring system for the background, in-depth study of the JPEG image compression standard implementation methods and carried out based on FPGA implementation and optimization. In this paper, a detailed method of implementation and optimization of the process, testing showed that to achieve good results.
Easy introduction of harmful static image compression has two kinds of comparisons that the current popular standard JPEG and JPEG2000. Illustrated by the reasons for JPEG compression method.
JPEG introduce the basic principles: JPEG compression of gray-scale image processing include: image segmentation, discrete cosine transform (DCT), quantization (Quantization), "Z"-shaped sort (Zigzag Scan), differential pulse code modulation (Differential Pulse Code Modulation, DPCM) on the DC coefficient (DC), Run Length Encoding (Run-Length Encoding, RLE) of the exchange coefficient (AC), Hoffman (Huffman) coding.
JPEG standard is characterized by discrete )
- 2009-03-29 08:39:04下载
- 积分：1
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plot_hht
EMD分解及HHT分解，主要功能是能把混合信号分解成其所含的各频率成分(HHT EMD decomposition and decomposition, the main function is to be able to decompose mixed signal into its frequency components contained in the)
- 2011-09-20 13:16:54下载
- 积分：1
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LEACH
以循环的方式随机选择簇头节点，将整个网络的能量负载均匀分配到网络中的每个传感器节点，从而达到降低网络能耗，提高网络生存周期的目的。(Cyclic manner randomly selected cluster head node, the energy of the entire network load evenly distributed to each sensor node in the network, which can reduce energy consumption and improve the life cycle of the destination network.)
- 2021-03-19 18:59:19下载
- 积分：1
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NRflow
基于matlab的电力系统潮流计算程序，支持刚刚接触这个的学生(Matlab-based Power Flow Calculation Program, just contact the support of students)
- 2008-05-06 16:11:28下载
- 积分：1
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zishiying
说明： 自适应滤波某个程序，对于初学DBF者有帮助(An adaptive filtering procedure useful for beginners who DBF)
- 2011-02-23 23:17:34下载
- 积分：1
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paper3
平方根升余弦滤波器的设计.pdf ,很好的一篇介绍平方根升余弦滤波器的文章 (Design and implementation of square·——root
raised cosine roll—Off digital filte)
- 2013-12-02 23:19:12下载
- 积分：1
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Matlab_Simulink_Reference
Matlab的英文原版Simulink仿真的参考教程……
(Matlab Simulink Reference，Hope it was useful for someone...)
- 2009-12-03 21:31:04下载
- 积分：1
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matlab实现的C4.5分类决策树算法
说明： C4.5决策树分类算法，用于进行数据分类(Classification algorithm)
- 2019-12-07 19:24:32下载
- 积分：1
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getfod
可以将模型经过转换计算求其ziegler-nichols整定公式中的参数K,L,T(Model can be after conversion calculation to find the Ziegler-Nichols tuning to the argument in the formula K, L, and T)
- 2013-03-28 18:02:00下载
- 积分：1
