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matlab关于对图形梯度的一般计算，很简单的一个小算法！(Matlab graphics gradient on the general terms, a very simple algorithm for a small!)

比较了几种经典的LMS自适应滤波算法，很清楚地看出在低信噪比下各算法的性能( It compared several classical LMS adaptive filtering algorithm,)

QPSK通信系统仿真，有所有的代码，课程设计或者实验可以参考(QPSK communication system simulation, there is all the code, curriculum design or experiment can refer)

IEEE30节点的电力系统仿真IEEE30节点的电力系统仿真(Simulation of power system simulation of IEEE30 node in IEEE30 node )

Lot of m-files examples for wastewater and treatment

viterbi simulation K = 7 in bpsk modulation

近似熵是一种衡量衡量非线性时间序列复杂性的非线性动力学分析方法，其物理意义 为熵值越大，时间序列的自我相似性越低，序 列越复杂，反之序列自我相似性越高；并且样 本熵对于序列长度依赖弱，仅需较短的数据就 能够得到稳健的熵值，同时其计算不需对数据 粗粒化，具有较好的抗干扰能力 (Approximate entropy is a measure to measure the complex nonlinear dynamics of nonlinear time series analysis method, the physical meaning of entropy value is larger, the lower the self-similarity of the time series, the more complex the sequence, whereas sequence of self-similarity the higher and the sample entropy weak dependence for the length of the sequence, only shorter data can be healthy entropy value, calculated without data coarse-grained, with good anti-jamming capability)

切削力随正切角的变化关系 可以看出切削力的变化情况(tangential angle and cutting force)

介绍了PWM整流器PI参数设计，并用matlab进行了仿真，很好很强大！(Describes the design of PWM rectifier PI parameters, and use matlab for simulation, the very very powerful!)

newmark方法求解非线性振动duffing方程(newmark method for solving nonlinear vibration duffing equations)