DBRUITAGE-ECG

本程序用于线性调频信号频率的测量，首先产生一加噪线性调频信号，再使用小波滤波去除噪声，最后使用希尔伯特变换法求信号的频率。(This procedure is used to measure the frequency of chirp signal, first generate a chirp signal with noise, and then use wavelet filtering to remove noise, and finally use the Hilbert transform method for the signal frequency.)

三相异步电机的转速闭环调压调速系统仿真模型(Three-phase induction motor speed control system simulation model of closed-loop regulator)

With the increasing penetration of renewable energies as distributed generation (DG) in smart grid scheme, technical problems arise in both distribution and transmission system level. Undesirable voltage is the main problem for connection of DGs in distribution systems while excessive reactive power demand transmission system is the major concern for Transmission System Operators. The low power generation capacity of DER (Distributed Energy Resources) has motivated the need for integration of different types of DERs and loads in the form of micro-grid to enhance the power generation capacity, reliability and marketability of dispersed type of micro-sources [12, 13]. Current harmonics and Reactive power consumption are the two power quality issues that are addressed in this thesis

Sub band adaptive filtering alogorhims

利用RBF神经网络建立的模型对函数进行逼近.是在MATLAB中文论坛上找到的(Use of RBF neural network model set up to function approximation)

用MATLAB实现的基4FFT算法的程序，输入一个长度为16的序列，得到DFT的频谱(Implemented with the MATLAB-based algorithm 4FFT program, enter a sequence of length 16 obtained DFT spectrum)

matlab7.0中工具箱em中的部分源程序(matlab7.0脰脨 鹿 陇 戮 脽脧盲em脰脨渭脛 虏 驴 脰脭 )

采用口面积分的方法来计算天线方向图，天线设计常用(Orifice area divided by the method to calculate the antenna pattern, antenna design used)

用Ziegler--Nichols整定公式来求P,PI,PID的个参数，其中Gc是校正器的传递函数,kp为比例系数， Ti为积分时间常数，Td为微分时间常数，输入参量vars为带迟滞--惯性环节模型的KT τ(With Ziegler- Nichols tuning formula to seek P, PI, PID' s parameters, which Gc is the corrector transfer function, kp is proportional coefficient, Ti the integral time constant, Td for the differential time constant, input parameters vars as with hysteresis- inertia model of the KT τ)

说明：  根据前人研究成果可以证明，煤镜质组反射率各向异性对煤田构造特征具有指示意义，镜质组最小反射率可以指示构造主应力方向。然而，在实际测量中，如何得到真正的镜质组最大、最小反射率及其方位是其中的关键环节。利用现有的岩石有限应变椭球拟合方法进行镜质组反射率椭球体拟合不失为一种行之有效的方法，可以由此确定镜质组最大、最小、中间反射率及其三维空间方位。 将之前拟合得到的反射率椭圆看作岩石有限应变椭圆即二维应变，其由之前的统计方法测定得到，三个截面的数据对于拟合唯一应变椭球来说是过多的，因此不可避免出现误差，导致三个截面应变椭圆不通过同一个椭球的情况。为了从三个截面数据得到唯一的应变椭球，需要对得到的数据进行相容性调整。采用Oertel的方法，从每一测量参数在不同截面中的值是正态分布这一假定出发，利用加权最小二乘法进行误差调整。(According to results of previous studies may prove vitrinite reflectance anisotropy on structural characteristics have implications for coal, vitrinite reflectance may indicate tectonic minimum principal stress directions. However, in actual measurement, how to get real vitrinite maximum, minimum reflectivity and its orientation is the key link. Conduct vitrinite reflectance ellipsoid fitting regarded as a proven method using existing rock finite strain ellipsoid fitting method can thus determine vitrinite maximum, minimum, intermediate reflectance and dimensional spatial orientation . Before fitting the reflectance of finite strain ellipse oval rock that is seen as a two-dimensional strain, as determined by statistical methods which have been before the data fit only for the three sections of the strain ellipsoid is excessive, and therefore can not to avoid errors, resulting in three elliptical cross-section does not pass through the same strain ellipsoid situation. In order to obtai)