opticalwaveguiderefractionindex

ar模型 阶数和参数估计的matlab程序

将用matlab编译的N－R法用于潮流计算是以导纳矩阵为基础的，由于利用了导纳矩阵的对称性、稀疏性及节点编号顺序优化等技巧，使N－R法在收敛性、占用内存、计算速度方面的优点都超过了阻抗法，成为六十年代末期以后普遍采用的方法。(Matlab compiler will use the N-R method for power flow calculation is based on admittance matrix-based, due to the use of the admittance matrix of the symmetry, sparsity and node ID, such as sequential optimization techniques, so that N-R method in convergence , memory, computing speed advantages over the impedance method, the late sixties to become widely used method.)

This code takes speech as input, removes silence region based on zero crossing rate and energy.output of the code is only voiced region of the input speech signal.the input is of the .wav format.

认知无线电中平均初始接入时延和平均切换时延的计算方法(Calculated the average switching delay and delay cognitive radio average initial access)

实现DQPSK信号调制解调功能，并给出了详细的matlab仿真结果(The realization of DQPSK signal modulation and demodulation functions, and gives a detailed matlab simulation results)

实现永磁同步电机的控制，采用矢量控制的方法，效果显著(Realize the control of permanent magnet synchronous motor )

以上代码是求解椭圆微分算子的特征值问题的Matlab源代码，采用有限元法的思想来编写的，程序计算结果和理论是相符的。(The above code is to solve the elliptic differential operator eigenvalue problem of the Matlab source code, using the finite element method to write the ideas, procedures, results and theoretical calculation is consistent.)

说明：  使用Gabor-Feature 的人脸检测matlab程序，自带测试图像(Face Detection using Gabor-Feature Extraction and Neural Networks)

在过程控制中，按偏差的比例（P）、积分（I）和微分（D）进行控制的PID控制器（亦称PID调节器）是应用最为广泛的一种自动控制器。(In process control, according to the percentage of deviation (P), Integral (I) and differential (D) control of PID controller (also known as PID regulators) is the most widely used of an automatic controller.)

使用matlab来设计长周期光栅的代码，使用耦合模理论方法。(Matlab to design a long-period grating code, using the coupled mode theory.)