qeigiu

FREQUENCY MODULATION

this is a simulink dc motor separate excitation with PID controller

说明：  本资源为双馈风机DFIG的建模，其中包括定子直接从电网以恒定的振幅和频率提供三相电压。转子还由三相电压供电，这些三相电压在稳定状态下具有不同的幅度和频率，以便达到电机的不同运行条件（速度，转矩等）。本资源在intin.m文件中给了具体的参数，可以模拟出具体的仿真结果，使用者也可以自己改变参数来模拟仿真自己的结果。(This resource is for modeling DFIG of doubly fed wind turbine, which includes the stator providing three-phase voltage directly from the grid at constant amplitude and frequency. The rotor is also powered by three-phase voltages, which have different amplitudes and frequencies in steady state to achieve different operating conditions (speed, torque, etc.) of the motor. This resource provides specific parameters in the InTin. M file, which can simulate the specific simulation results. Users can also change the parameters to simulate their own results.)

16阶带通滤波器在matlab环境下仿真程序(16-order bandpass filter in matlab simulation environment)

说明：  图像及其预测误差图像78维特征提取，用于图像识别(Image Its prediction error image 78 dimensional feature extraction)

用双线型描述系统，并且使系统的模型具有良好的鲁棒性(Described by bilinear system, and the system model has good robustness)

用matlab求解方程组的源程序，用matlab求解方程组的源程序(Solving equations using matlab source, solving equations using matlab source)

该代码实现了以2为因子的图像升采样和降采样功能。 降采样包括使用平滑滤波器(with using the averaging filter)和不使用平滑滤波器(without using the averaging filter)两种方法。 升采样包括像素点直接复制(pixel replication method)和线性插值(bilinear interpolatoin method)两种方法。 降采样方法和升采样方法共有4种组合。程序运行后，给出了一个原始图片和四个结果图片。 图片1.原始图片。 图片2.平滑滤波器降采样&像素点直接复制升采样。 图片3.平滑滤波器降采样&线性插值升采样。 图片4.不使用平滑滤波器降采样&像素点直接复制升采样。 图片5.不使用平滑滤波器降采样&线性插值升采样。 (The code to achieve a 2-factor image upsampling and downsampling function. Down-sampling (with using the averaging filter) and do not use smoothing filter (without using the averaging filter) are two ways to use the smoothing filter. Upsampling including the pixels copied directly (pixel replication method) and linear interpolation (bilinear interpolatoin method) two methods. Down-sampling method and liters a total of four combinations of sampling methods. The program is running, it shows a picture of an original picture and four results. Picture 1 original picture. Photo 2. Smoothing filter downsampling & the pixel directly copied liter sample. Photo 3. Smoothing filter downsampling & the linear interpolation liter sampling. Picture 4. Smoothing filter down-sampling & the pixels directly copied liter sampling. Picture 5. Use smoothing filter down-sampling & the linear interpolation liter sampling.)

改进后的直接转矩控制系统，绝对能用。matlan/simulink7.4(Improved direct torque control system, the absolute use. matlan/simulink7.4)

从均匀以及非均匀量化两种角度对PCM系统的量化过程进行MATLAB编程仿真和Simulink仿真(From a uniform and non-uniform quantization of the quantization process two angles PCM system s simulation and MATLAB Simulink simulation programming)