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MATLAB
说明： 高斯白噪声无线通信信道下的误码率仿真，希望对你的学习有用(Gaussian white noise of wireless communication channel under BER simulation, you would like to learn useful)
- 2008-11-19 15:49:12下载
- 积分：1
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Fuzzy-PID-dual-mode-control-system
交流位置伺服系统因其存在参数时变、负载扰动以及电机的非线性等缺点，
很难为其建立准确的模型. 模糊（ fuzzy）控制具有无需建立被控对象的数学模型、鲁棒性好等
优点，但稳态精度差. 将模糊控制和PID 控制相结合，设计了Fuzzy-PID 双模控制器. 在论域内
用不同的控制方式分段实现控制，这样就综合了模糊控制和PID 控制的优点，克服了各自的缺
点. 该控制器结构简单、易于实现. 在半闭环交流位置伺服系统上所做的实验表明，采用Fuzzy-
PID 双模控制器与采用经典PID 控制器相比，阶跃响应的调整时间减少了33. 7 ，并且无超
调，轨迹跟踪误差减小了47. 2 .(AC servo system because of the presence of parameter variations, load disturbances and non-linear motors and other shortcomings, it is difficult to establish accurate models for fuzzy (fuzzy) control without having to build a mathematical model of controlled object, robustness and good However, steady-state accuracy is poor. fuzzy control and PID control are combined to design a dual-mode Fuzzy-PID controller in the sub-region to achieve control on the different control methods, so that a combination of fuzzy control and PID control advantages to overcome their disadvantages. simply the controller structure, easy to implement. experiments on semi-closed loop AC servo system did show that the Fuzzy-PID controller is compared with the classic dual-mode PID controller, step response The adjustment time is reduced by 33.7 , and no overshoot, tracking error is reduced 47.2 .)
- 2014-05-26 19:12:10下载
- 积分：1
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PerformaceofQPSKandDQPSK
Performance of QPSK and DQPSK in AWGN and Rayleigh Fading Channel. A detailed Report of the work done in the source code is also attached as another file
- 2010-06-14 04:08:44下载
- 积分：1
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filter--classifier
matlab数字信号处理，输入图像矩阵和窗口大小，进行中值滤波,平均滤波，svm分类器(Digital signal processing, input image matrix, and window size，median filter,Average filter, svm classifier)
- 2011-05-13 03:32:16下载
- 积分：1
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Canvas
Main form backround create shortcut
- 2014-09-19 11:07:29下载
- 积分：1
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BP-OMP-StOMP
采用小波变换稀疏方法和正交匹配跟踪算法处理图像(Sparse wavelet method and orthogonal matching tracking algorithm)
- 2015-01-13 22:16:07下载
- 积分：1
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LFM
线性调频信号相关仿真，模糊函数绘制，波形分析等等(Linear FM signal correlation simulation, fuzzy function mapping, waveform analysis, etc.)
- 2021-03-15 17:19:22下载
- 积分：1
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DCTlicheng
研究表明，构成K一L变换矩阵的向量也就是ToePhtz矩阵的特征向量。与此同时，离散
余弦变换矩阵逼近于ToePutz矩阵的特征向量矩阵，所以离散余弦变换矩阵与自然图像的
K一L变换矩阵十分相似。经过离散余弦变换后的变换系数块的协方差矩阵Cy非常接近对角
阵，即除了对角线元素以外，其它很多元素都近似为0，并且在左上角集中了主要能量。这
反映了自然图像大部分区域变化不大，亮度突变只占少数，即图像能量以低频成分为主的特
性。通过变换后的量化，舍弃对视觉效果影响较小的次要信息，可达到进一步的压缩效果。
虽然从去相关性能的意义上讲，DCT是一种次于K一L变换的准最佳变换，但是从算法实现的角度来看，DCT则远远优于K一L变换。首先，当图像的分块大小确定后，DCT的变换矩阵也就随之确定了，不随输入信号的统计特性变化而变化 其次，二维DCT能够分解成两次一维DCT，有利于硬件实现。
(Studies have shown that constitute a K L transformation matrix vector is ToePhtz eigenvector of the matrix. At the same time, discrete
The cosine transform matrix approximation in ToePutz matrix eigenvector matrix, so the discrete cosine transform matrix and natural images
Is very similar to a K L transformation matrix. After discrete cosine transform, the transform coefficient block of Cy is very close to the diagonal of covariance matrix
Matrix, namely except diagonal elements, many other elements are approximate to 0, and focused the main energy in the upper left corner. this
Reflects the natural images most area changed little, brightness mutations accounted for only a few, the energy is given priority to with low frequency components of image
Sex. Through quantitative after transformation, abandoning smaller effect on the visual performance of secondary information, can achieve further compression effect.
Although from related to the performance of the sense, DCT is a kind o)
- 2013-11-25 16:00:24下载
- 积分：1
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mcc
DC MOTOR SPEED CONTROL mcc
- 2010-10-14 04:33:13下载
- 积分：1
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DFIG_Feb07
Simulating DFIG with PSCAD
- 2010-10-18 22:05:58下载
- 积分：1
