pf1

在采样点之间的频率响应是由各采样点的加权内插函数叠加而形成的，因而有一定的逼近误差。该误差大小取决于理想频率响应的形状，理想频响特性变化越平缓，内插值越接近理想值，逼近误差越小；反之，如果采样点之间的理想频响特性变化越陡，则内插值与理想值之间的误差越大，因而在理想滤波器不连续点的两边，就会产生尖峰，而在通带和阻带就会产生波纹。用频率采样法设计的实际滤波器频率响应如图1所示。由图1可知，实际滤波器的阻带衰减取决于内插函数第一旁瓣幅度值的大小，其大小决定了所设计的滤波器的阻带性能。(Interpolation function superimposed between sampling points of the frequency response is weighted within each sampling point and the formation of, and thus have a certain degree of approximation error. The size of this error depends on the shape of the ideal frequency response and the ideal frequency response characteristic change is more gentle, interpolated and more close to the ideal value, the smaller the approximation errors Conversely, if the sampling point between the ideal frequency response characteristics of the steeper the change, and then the interpolated the larger the error between the ideal value, and thus in the ideal filter both sides of the discontinuity point, will produce spikes occurs ripple in the passband and stopband. Actual design frequency sampling filter frequency response is shown in Figure 1. Figure 1 shows, the actual filter stopband attenuation depending on the interpolation value of the size of the first side-lobe amplitude of the function that determin)

MATLAB命令大全 实用书籍 MATLAB设计编程必备(MATLAB MATLAB command Guinness Book of Practical Design of programming required)

Practical matlab applications for engineers. contains objectives and examples from time domain representation of continuous and discrete signals to analog and digital filters.

single phase active power filter and may also contain images and documents relative to filter control

Source code for Matlab MPI for Windows and Linux.

GMODULE - GLIB wrapper code for dynamic module loading.

说明：  四杆桁架结构的有限元分析(Bar2D2Node); 三梁平面框架结构的有限元分析(Beam2D2Node); 基于3节点三角形单元的矩形薄板分析(Triangle2D3Node); 基于4节点四边形单元的矩形薄板分析(Quad2D4Node); 基于4节点四面体单元的空间块体分析(Tetrahedron3D4Node); 基于8节点六面体单元的空间块体分析(Hexahedral3D8Node);(Finite element analysis of four bar truss structure (bar2d2node); Finite element analysis of three beam plane frame structure (beam2d2node); The analysis of thin rectangular plate based on 3-node triangular element (triangle2d3node); The analysis of rectangular thin plate based on 4-node quadrilateral element (quad2d4node); Tetrahedron 3D 4node (Tetrahedron 3d4node) is used to analyze the spatial block; The spatial block analysis based on 8-node hexahedral element (hexahedral 3d8node);)

利用MATLAB程序逐个统计图像的边界点，并存入矩阵(MATLAB program using statistical image boundary points one by one, and deposited matrix)

pmsm整流控制 在 电机中的运用非常多的其中解释比较详细(rectification control PMSM motor in the use of very many of them explained in more detail)

在matlab环境下的简单调频过程的实现(frequency modulation)