ex4

matlab code for h infinity filter.

PV system working very good

石川公式法计算齿轮副啮合刚度，可以画一个周期(Deputy Incident formula method to calculate gear mesh stiffness, you can draw a cycle)

matlab 神经网络算法应用于图片中人物性格识别,通过对神经网络的训练，可以识别图像中是男性还是女性。。。(matlab neural network algorithm is applied to the picture of character recognition, neural network through training, can identify the image is male or female. . .)

GPON 标准 GPON ITU 标准 G984.1-2003 (GPON ITU standard G984.1-2003)

In MATLAB, usually we use function bvp4c() to solve boundary value problem (BVP) of ODE. However, we also can use function ode45() to solve BVP of ODE too. However, ode45() needs all initial values at one point. Therefore we have to construct an auxiliary function, whose input argument is the missing initial value and the return output is the given boundary value, Then we can call function fsolve() to get the missing initial value. This method is particularly efficient it the ODE has one or more parameters. Also this method is essentilal for GNU Octave, because whose function bvp4c() is not programmed for parameter ODE yet.

预测控制中的DMC（动态矩阵控制），有清晰的备注(Predictive Control DMC (Dynamic Matrix Control), there is a clear Remarks)

拟牛顿法和最速下降法(Steepest Descent Methods)一样只要求每一步迭代时知道目标函数的梯度。通过测量梯度的变化，构造一个目标函数的模型使之足以产生超线性收敛性。这类方法大大优于最速下降法，尤其对于困难的问题。另外，因为拟牛顿法不需要二阶导数的信息，所以有时比牛顿法(Newton s Method)更为有效。如今，优化软件中包含了大量的拟牛顿算法用来解决无约束，约束，和大规模的优化问题。(The quasi-Newton method and the Steepest Descent Methods only require that each step iterations know the gradient of the objective function. By measuring the change of the gradient, constructing a model of the objective function is sufficient to produce superlinear convergence. This method is much better than the steepest descent method, especially for difficult problems. In addition, because the quasi-Newton method does not require information on the second derivative, it is sometimes more effective than the Newton s Method. Today, the optimization software contains a large number of quasi-Newton algorithm used to solve the unconstrained, constraint, and large-scale optimization problems.)

产生Rician分布的noise Matlab源程序(Rician distribution noise maker in Matlab)

a matlab simulation of a multifiliar telefonic wire with dpsk-4 modulation