sobi

空间信道模型，特别适用于MIMO。有多种场景可以选择，并可根据需要调整参数(SCM)

Navier Stokes solution

matlab实用程序100例，都是些小程序，可以用来熟悉matlab的一些常识(matlab utility 100 cases, are some small programs that can be used to know some of the knowledge of matlab)

说明：   编写时间2009年2月24日第1次 以后以此区别修改版本!!! ---------频域传递公式推导------------ 变量说明:zn1 zn2:分别为左塔和右塔阻尼比 w1式起重机w1 w2:左塔和右塔固有频率 w01 w02 wc分别连体左支座、右支座、连体自振频率 zn01 zn02 分别为连体左支座、右支座的连接阻尼比 非对称双塔连体结构 主要考虑支座连接频率比的变化结构反应功率谱曲线( Write time, February 24, 2009 1st after a modified version of this distinction!!! --------- Frequency-domain transfer formula derivation------------ variable Description: zn1 zn2: respectively, the left and right tower tower damping ratio w1 crane w1 w2: the left and right tower tower natural frequency w01 w02 wc Siamese left bearing, respectively, the right bearing, Siamese natural frequency zn01 zn02 Siamese respectively, bearing left and right bearing link damping ratio non-symmetrical structure Siamese twin towers bearing the main consideration changes in the ratio of the structure connecting the frequency response curve of the power spectrum)

针对实际工业生产中常见的多输入多输出时滞过程, 构造多变量Smith预估控制结构, 提出基于对象模 型伴随矩阵的解耦器设计方法. 通过对解耦后对象的幅频和相频特性分析, 获得对象的简化一阶数学模型. 根 据Smith预估控制结构闭环特征方程的特点, 利用Butterworth滤波器极点配置的原理, 对解耦后的多变量时滞过程 设计PI控制器. 结合实际过程中常见的不确定性, 分析了控制系统保证鲁棒稳定性的充要条件. 最后以实例验证了 本文所提方法的优越性.(The decoupling Smith control method is presented for multi-input-multi-output system with time-delays which are often encountered in practical engineering. A new method for designing the decoupler based on the adjoint matrix of the multivariable system model with time-delays is proposed. By analyzing the amplitude-frequency and phasefrequency characteristics of the decoupled model, the decoupled model is reduced to a first-order model with time-delay. According to the closed-loop characteristic equation of Smith predictor structure, a PI controller is developed by using the principle of pole assignment for Butterworth filter. Sufficient and necessary conditions for robust stability are derived for adaptive and multiplicative uncertainties commonly occurred in practice. Simulation results show the superiority of the proposed method.)

Image compression using SVD is a very useful compression algorithm. The image size will not decrease in the compression algorithm.

calcultes the Least squqres and the minimum mean square error

Accumulator on dldl reartg

MATLAB的算法测试测试函数一共十个，都是最经典的(MATLAB algorithm test function of a total of ten, are the most classic.)

jpeg压缩与解压例子，matlab中离散余弦变换并用huffman编码(jpeg compression and decompression example, matlab and used in the discrete cosine transform coding huffman)