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systemmatlab
在matlab下实现系统辨识设计,希望对大家有帮助(Matlab achieved in the design of system identification, and they hope to help everyone)
- 2008-04-16 09:45:21下载
- 积分:1
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DSPII_USTC_01
传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能:
1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线;
2) 给出了最陡下降法以及LMS算法的计算公式;
3) 用MATLAB产生了方差为0.05, 均值为0白噪音S(n),并画出某次采样得到的波形;
4) 根据 2)中的公式,并利用 3)中产生的S(n),在 1)中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线;
5)用MATLAB计算并画出了LMS法时误差随时间n的变化曲线(对应S(n)的某一次的一次实现)和e(n)波形;
6)在 1)中的误差性能曲面的等值曲线上,叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线;
7)最终对结果进行了分析,具体见压缩包的word文档。
(Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:
A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve
2 ) gives the steepest descent method and the LMS algorithm formula
3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform
4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)
- 2013-11-06 13:12:36下载
- 积分:1
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haihiu_v28
采用了小波去噪的思想,music高阶谱分析算法,基于互功率谱的时延估计。( Using wavelet denoising thought, music higher order spectral analysis algorithm, Based on the time delay estimation of power spectrum.)
- 2016-11-23 17:10:21下载
- 积分:1
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top3d
说明: MATLAB三维拓扑程序,可以进行三维拓扑优化(Matlab 3D topology program)
- 2019-11-21 15:55:17下载
- 积分:1
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emd
用于故障诊断、数据分析等领域的经验模态分解方法(For fault diagnosis, data analysis and other fields of empirical mode decomposition method)
- 2013-11-06 18:30:20下载
- 积分:1
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piph
电磁悬浮系统电流控制平衡点线性化MATLAB仿真(Electromagnetic suspension system current control balance linearization MATLAB simulation
)
- 2016-04-12 15:00:03下载
- 积分:1
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(高维词典学习)OSDL-master
说明: 用matlab实现的稀疏字典学习算法,可以用于图像去噪、图像分类、图像识别等(Sparse dictionary learning algorithm implemented by Matlab can be used for image denoising, image classification, image recognition and so on.)
- 2019-04-24 19:29:15下载
- 积分:1
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jiefangcheng
求解线性方程组的几种方法:高斯列主元、高斯塞德尔迭代法(Solving linear equations in several ways: column pivot Gauss, high Sise del iteration)
- 2010-12-01 20:53:47下载
- 积分:1
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bark2343
实现巴克码筛选,可以选出所有长度的巴克码码组。并进行画图(Achieve screening, Barker code, you can elect all of the length of the Barker code group. And for drawing)
- 2012-07-02 21:16:04下载
- 积分:1
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Kinematic-Hardening-Plasticity
A UMAT Coding for Kinematic Hardening Plasticity.
- 2013-10-18 19:18:14下载
- 积分:1