Nonlinear-equations

code for computing the entropy of gray scale image, including to calculate the local entropy (especially for matlab 7.0 and lower that dont have entropy and entropyfilt function)

永磁同步电机矢量控制,稍微欠缺,速度跟踪不是很好，一起交流(Permanent magnet synchronous motor vector control, a little lack of speed tracking is not very good, with the exchange)

hi this code image processing

推力轴承雷偌方程MATLAB编程求解油膜压力(MATLAB programming for solving oil film pressure of thrust bearing)

QPSK在加性高斯白噪声环境下，信噪比和误码率的仿真。 先产生一个四组符号的序列，再将该序列映射到对应的相位上。用相应的函数产生均值为零、方差为δ2的加性高斯噪声。 (QPSK the additive white Gaussian noise environment, and the signal-to-noise ratio of the simulation. First group have a four symbols of sequence, then this sequence mapped to the corresponding phase on. With the corresponding function have zero mean and variance of 未2 additive white Gaussian noise.)

使用神经网络实现了异或的功能，代码为matlab代码，输入为二维数组，输出为一个数，训练样本为异或的四种情况，结果误差为1e-010,(Using a neural network to achieve the XOR functions, code for matlab code, enter a two-dimensional array, the output is a number of training samples for exclusive or four cases, the result error is 1e-010,)

永磁同步电动机的开环控制的matlab/simulink仿真。供大家学习。(Permanent magnet synchronous motor open-loop control matlab/simulink simulation. For everyone to learn.)

说明：  进行带钢厚度预测，通过提取带钢厚度的特征，输入svr进行预测。(Prediction of strip thickness)

我做了很久的，自认很满意。有关信号仿真，信号频谱分析，滤波器的很多很多.m文件。(I do for a long time and considers himself very satisfied. The signal simulation, signal spectrum analysis, many filter. M documents.)

Implementation of Playfair Cipher in C