zhangxiaoyong

针对滚动轴承故障信号具有非平稳、非高斯的特点，提出了将时域分析与小波分析相结合的方法对滚动轴承进行故障诊断。在研究不同信号分析方法理论的基础上，以滚动轴承外圈故障振动信号为例，采用多种信号处理方法进行了分析。结果表明，各种分析方法在分析轴承故障时的特点各不相同，在实际使用中，可将时域分析与小波分析综合使用，实现轴承状态的实时监测与故障的准确定位。(For rolling bearing fault signals have non-stationary, non-Gaussian, we proposed the time-domain analysis and wavelet analysis method of combining the rolling element bearing fault diagnosis. In the study of different analytical methods based on the theory of signal to the outer ring rolling bearing fault vibration signal, for example, using a variety of signal processing methods are analyzed. The results show that a variety of analytical methods in the analysis of the characteristics of bearing failure vary, in actual use, can be time-domain analysis and synthesis using wavelet analysis, to achieve accurate positioning of the bearing condition monitoring and real-time fault.)

对leach协议的改进，改变产生簇头的方式，距离bs越近，成为簇头的概率就越大。(Improvement on the leach protocol to change the way the cluster head generated from the bs the more recent, as the greater the probability of cluster head.)

信源为数字信号信道信噪比为10dB的直扩通信系统仿真实验--LDPC编码仿真源代码(Source to a digital signal channel 10dB SNR DSSS communication system simulation- LDPC coding simulation source code)

MATLAB语言与控制系统仿真,书籍+源程序(MATLAB language and control system simulation, book+ source code)

用于1维曲线的分形维数计算，利用的是盒维数算法(one-dimensional curve for the fractal dimension is calculated using the box dimension algorithm)

潮流计算仿真实例，可以进行MATLAB仿真( Flow calculation simulation examples )

时深转换小程序，很实用................(time to depth，useful)

说明：  高斯过程回归算法，根据已知数据预测未知数据，假设协方差函数，利用核函数计算(Gaussian process regression algorithm, predict unknown data according to known data, assume covariance function, and use kernel function to calculate)

实现时域自适应滤波中基于QR分解的递推最小二乘算法(Realize time-domain adaptive filter based on QR decomposition recursive least squares algorithm)

总体X服从非中心卡方分布，求两个参数的极大似然估计 输入：样本数据 输出：参数估计值n，v 内有详细说明(Overall X obey non-central chi-square distribution, find the two parameters MLE)