project2

This project consists of two back to back pwm converters used for simulation of traction load in normal operating mode. The first side is connected to a single phase network and uses hysteresis current control. The second side is connected to a three phase network and uses space vector modulation for controlling its inverter.

根据静态苹果图像RGB三值检测苹果表面是否有缺陷，比较准确(Apple RGB image from the static three-valued test whether apple surface defects, more accurate)

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交流永磁同步电机模糊PID控制和单纯PID控制比较，突出模糊控制的 优点，可供学习模糊PID和电机的人参考。(AC permanent magnet synchronous motor PID control and fuzzy PID control relatively simple, highlighting the advantages of fuzzy control for learning and motor fuzzy PID Reference.)

it is a code in MATLAB for calculation of bit error ratio vs signal to noise ratio , for multiuser code division multiple access .. usually in any communication system calculation of BER is very important to know the performance of system .. so in this program multiuser CDMA system is used ,, spreading is done using HADAMARD matrix .. or WALSH code .. and BER vs SIGNAL to NOISE ratio graph is computed

最小二乘窄带干扰消除。有用信号是一个点状目标，产生窄带干扰采样，产生高斯白噪声，设计一个M=100个系数的单步(D=1)线性预测器，再用得到的线性预测器来消除图中被干扰的信号x(n)中的噪声。(Least Squares narrowband interference cancellation. The useful signal is a target point, narrow-band interference is sampled Gaussian white noise, the design of a M = 100 coefficients in a single step (D = 1) linear predictor, then the obtained linear prediction filter to eliminate the interference graph the signal x (n) the noise.)

Three phase induction motor in dq frame simulation

近红外光谱提取后，matlab环境下可对NIR光谱数据进行正交信号校正(After the near-infrared spectrum extraction matlab environment can NIR spectral data orthogonal signal correction)

说明：  可用于对原始离散信号的变分模态分解，实测有效(Used for variational mode decomposition of signals)

matlab程序，实现fir各种窗函数的滤波 iir各种类型的滤波(matlab procedures fir achieve a variety of window functions of various types of filtering IIR filtering)