fenshuiling

李指数计算，该函数用来计算时间序列的最大Lyapunov 指数--Wolf 方法(Lee index calculation, the function is used to calculate the time series of the largest Lyapunov exponent- Wolf method)

双向PCS控制仿真，DC-DC部分采用定功率单环控制，DC-AC采用Udc-Q解耦控制，系统直流电压由后级DC-AC实现稳定控制(bi-direction PCS control simulation, DC-DC part using single-loop control, DC-AC part using Udc-Q decoupling control. )

这是bpsk的调制程序代码，它基于matlab环境编写，用于验证调制的效果是否达到设计要求。(qpsk)

协作频谱感知虽然可提高系统的感知性能， 但随着感知节点数目的增加， 系统资源的占用越来越多， 系统传输效率下降． 分析了协作频谱感知方法的感知性能， 得到协作频谱感知的感知性能与感知节点数目和接 收信噪比之间的关系， 提出了一种新的次级用户节点的选择方法， 该方法有效保证了所选择节点的感知性能， 仿真验证了该算法的有效性和可靠性．(Although the cooperative spectrum sensing can improve the perceived performance of the system, but with the perception of the number of nodes increases, more and more system resources, the system transmission efficiency decreased. Cooperative spectrum sensing method of analysis of the perceived performance of collaborative spectrum sensing by the perception of performance and perception of the number of nodes and the relationship between the received SNR, a new secondary user node selection method, which effectively guarantee perceived performance of the selected node, the simulation proves the validity and reliability.)

云搜索优化算法，是一种新兴的群智能优化算法。可以下载，改进。(cloud search optimization algorithm)

一个模型预测控制的编写的程序，在预测步长P不同时候进行仿真，曲线很好。(Procedures for the preparation of a model predictive control, at various times forecast simulation step size P, the curve is very good.)

非线性负荷对线路谐波的影响，可分析各个频率成分的含量(Influence of nonlinear harmonic load on the line, it can analyze the content of each frequency component)

当惯性权值不变的情况下取不同的值，c取值为1.5和2(When the inertia right under the condition of invariable value take different values)

matlab手册及代码 非常有借鉴价值 欢迎下载(matlab manuals and code are very welcome to download reference value)

微分方程（这里指的是常微分方程）指含有一次、二次、乃至高次微分未知数的方程。是解决偏微分方程、数理方程的基础。有许多特殊函数，都是为了无法得出多项函数或超越函数型式的解析解的微分方程而定义出来。这些特殊函数之所以重要，是因为它们描述了自然界中的某些现象，例如，电子的活动、鼓皮的振动、钟摆的摆动等等。(Differential equations (in this case is the ordinary differential equation) means containing one, two, and even high-differential equations unknowns. Is to solve the partial differential equations, mathematical equations based. There are many special functions, are not drawn to a number of functions or functions beyond the type of analytical solution of differential equations which define them. These special functions are important because they describe the nature of certain phenomena, for example, electronic activities, drum skin vibrations, pendulum swing, and so on)